Kubota u17 3α micro excavator service repair manual by 163048

WORKSHOP MANUAL

KUBOTA EXCAVATOR

U17-3

Code No.97899-61952

Record of Revisions Symbol

Date

Main Revised Points & Corrective Measures

Person-in-charge

Aug. 2008

Maintenance intervals EU - version revised.

I. Okae

Oct. 2008

Correction of descriptions on: 1. Engine model name for EU - version 2. Retractable track frame

I. Okae

U17-3Îą is the model name of EU - version U17/U17-3 is the model name of KTC, KCL and KTA - version

CONTENTS I.

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-1

II. MACHINE BODY • Mechanism Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-M-1 • Service Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-1

III. ENGINE • Mechanism Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III-M-1 • Service Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III-S-1

IV. HYDRAULIC SYSTEM • Mechanism Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV-M-1 • Service Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV-S-1

V. ELECTRICAL SYSTEM • Mechanism Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V-M-1 • Service Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V-S-1

WSM U17-3α/U17-3/U17

I. GENERAL

GENERAL

A. BODY AND ENGINE IDENTIFICATION MARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-3 B. SAFETY PRECAUTIONS FOR SERVICING, DISASSEMBLY AND REASSEMBLY . I-S-5 a. b. c. d.

Safety Measures Before Starting Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety Measures During Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparation for Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Precautions for Disassembly and Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . .

I-S-5 I-S-5 I-S-6 I-S-6

C. IMPORTANT SAFETY PROCESS AND CRITICAL FUNCTIONAL PROCESS . . . . . I-S-7 D. IMPORTANT INSPECTION ITEMS AFTER REASSEMBLING. . . . . . . . . . . . . . . . . . I-S-9 a. Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-9

E. MAINTENANCE INTERVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-15 a. b. c. d. e. f. g. h. i.

EU-version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PP (KTC, KCL)-version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . KTA-version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic Oil Check for Machines with Hydraulic Breakers . . . . . . . . . . . . . . . . . . Maintenance Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting for Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Periodic Replacement of Important Component Parts . . . . . . . . . . . . . . . . . . . . . . Recommended Oils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lifting Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I-S-15 I-S-17 I-S-19 I-S-20 I-S-21 I-S-23 I-S-24 I-S-25 I-S-26

F. PRODUCT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-31 a. b. c. d. e.

U17-3α Development Concept. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Why Minor Change? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quick Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Major Sales Feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications Comparison. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I-S-1

I-S-31 I-S-31 I-S-32 I-S-33 I-S-34

1 1

WSM U17-3Î±/U17-3/U17

I. GENERAL

I-S-2

WSM U17-3α/U17-3/U17

I. GENERAL

A. BODY AND ENGINE IDENTIFICATION MARKS If trouble occurs during use, or servicing is necessary, contact your dealer. Pass on your machine model, engine type and serial number to them.

Example: S/N 10001

No.

1 2 3 4 5 6 7 8

Items

Contents

MODEL

U17-3α

SERIAL No.

10001

MASS

1650

MAX, DRAW BAR PULL

32.3

POWER

11.6

MAX,VERT,LOAD

2.7

PRODUCT IDENTIFICATION NUMBER >JKUU0173*01S10001< MANUFACTURED YEAR

2008

EU-version

No.

1 2 3 4

Name plate: Code No. RA018-57721

I-S-3

Items

Contents

Machine model

U17-3α

Serial No.

10001

Engine No. PRODUCT IDENTIFICATION No. >JKUU0173*01S10001<

WSM U17-3α/U17-3/U17

I. GENERAL

(1) Machine serial number

(1) Serial No. (2) Engine serial number The engine serial number is an identified number for the engine. It is marked after the engine model number. It indicates month and year of manufacture as follows. e.g. D902-8L001 “8” indicates year of 2008 and “L” indicates June. So, 8L indicates that the engine was manufactured in June 2008.

(1) Engine serial No. Month of manufacture

Year of manufacture Alphabet or Number

Year

Alphabet or Number

Year

2001

2015

January

A0001 ~ A9999

B10000 ~

2002

2016

February

C0001 ~ C9999

D10000 ~

2003

2017

March

E0001 ~ E9999

F10000 ~

2004

2018

April

G0001 ~ G9999

H10000 ~

2005

2019

May

J0001 ~ J9999

K10000 ~

2006

2020

June

L0001 ~ L9999

M10000 ~

2007

2021

July

N0001 ~ N9999

P10000 ~

2008

2022

August

Q0001 ~ Q9999

R10000 ~

2009

2023

September

S0001 ~ S9999

T10000 ~

2010

2024

October

U0001 ~ U9999

V10000 ~

2011

2025

November

W0001 ~ W9999

X10000 ~

2012

2026

December

Y0001 ~ Y9999

Z10000 ~

2013

2027

2014

Month

A: Engine Model Name and Serial Number

I-S-4

Engine Serial Number 0001 ~ 9999

10000 ~

WSM U17-3Îą/U17-3/U17

I. GENERAL

B. SAFETY PRECAUTIONS FOR SERVICING, DISASSEMBLY AND REASSEMBLY Safety precautions for servicing Most accidents during servicing arise from carelessness. Please remember that safety involves both the welfare of the employees and improved work efficiency.

Safety precautions for disassembly and reassembly Machines must be disassembled and assembled efficiently and safely. It is very important to thoroughly understand the construction and function of the machine, to make all appropriate preparations, and start operations according to the specified working procedures.

a. Safety Measures Before Starting Work (1) Work clothes

(2) Team work

1. Wear specified work cap and clothed. (Under no circumstances may workers wear undershirts only.) Cuffs must be kept buttoned, and any tears must be mended.) 2. Wear safety shoes. 3. Do not wear cotton gloves when working on the internal section of engine, reduction gears or hydraulic units for repair or others, or when using a hammer. Wear leather gloves, however, when hoisting wires.

(2) Inspecting equipment and tools 1. Prepare equipment (cranes, fork lifts, tool, etc.) required for servicing and inspect for any problems before starting work. 2. Hammer heads (metal parts) must be firmly secured to their handles. 3. Check hosting tools (wire ropes, hoisting chains, etc.) before use.

(3) Set workshop in order 1. Secure appropriate space needed for disassembly. 2. Secure a clean, safe place for arranging disassembled parts. 3. Store volatile substances (gasoline, light oil, thinner, oily articles, etc.) in appropriate containers at selected locations to prevent fire hazards.

b. Safety Measures During Work (1) Protectors 1. Wear goggles when using chisels for chipping. 2. Use appropriate protectors during welding. 3. Wear a helmet when working with a crane or at elevated locations. I-S-5

1. When working with two or more people, divide the work and maintain close communication. 2. Crane work must be carried out using predetermined signals.

(3) Disassembly and assembly 1. Do not wear gloves when using hammers. 2. Use rods of the specified soft material for removing pins. Do not use a hammer as a pad. 3. Do not place fingers in holes when centering. 4. Heavy parts must be adequately supported before removing bolts.

(4) Cranes 1. Basically, use a crane for objects heavier than 44lb (20kg). 2. Crane operation and hoisting must be performed only by qualified personnel. 3. Pay careful attention to the center of gravity when hoisting, and do not stand under the lifted objects.

(5) Others 1. To work under a jacked-up carrier, be sure to place wood pieces underneath. 2. When charging batteries, make sure there are no open flames in the immediate vicinity. 3. All electric tools must be grounded. 4. Before welding the machine, remove the battery. â&#x20AC;˘ When removing the battery, be sure to disconnect negative (-) cord first. â&#x20AC;˘ When mounting the battery, be sure to connect the positive (+) cord first.

WSM U17-3α/U17-3/U17

I. GENERAL

c. Preparation for Disassembly (1) Cleaning Remove mud and dirt from the body before disassembly.

(2) Acceptance inspection The machine must be checked before it is disassembled to record existing conditions, such as those listed below. Model, serial number, and hourmeter reading • Reason for repair and repair history • Element stains • Fuel and oil condition • Parts damage *(Take photographs if necessary.)

(3) Equipment and tools Prepare equipment, tools, cranes and parts storage racks as required.

d. Precautions for Disassembly and Reassembly (1) Disassembly 1. Follow the specified disassembly procedures. 2. Make alignment marks to insure correct reassembly. 3. Arrange disassembled parts in an orderly way, and attach identification tags or put marks if needed.

(2) Reassembly 1. Clean all parts before assembly. Repair any scratches or dents. Take special precautions against dirt and dust. 2. Parts with rust-preventive coatings must be assembles only after removing the coating. 3. Separated parts must be correctly reassembled using alignment marks. 4. As a rule, use a press to reassembled bearings, bushing and oil seals. Use pads when using a hammer.

e. Maintenance CAUTION When adding oil and servicing: 1. Park the machine on a large, flat place. 2. Place the bucket and dozer on the ground. 3. Stop the engine 4. Move the attachment control lever and dozer lever to make sure the remaining pressure is relieved. 5. Draw out the starter key and check around the machine for safety. Before starting the job, carefully read the Operational Manual in " ! Servicing Precautions" on the yellow pages.

f. Waste Disposal WARNING Do not carelessly throw away and burn waste materials. Such actions may lead to environmental pollution and punishment by local laws. When disposing of waste: * Let out waste fluid from the machine into a container. * Do not let waste fluid flow on the ground as well as into a river, lake, marsh, and sea. * Contact your dealer or a qualified industrial waste handler to treat (dispose of or incinerate) harmful waste materials. Those materials include waste oil, fuel, cooling water (anti-freeze), coolant, solvent, filters, batteries, rubber and other toxic substances. I-S-6

WSM U17-3α/U17-3/U17

I. GENERAL

C. IMPORTANT SAFETY PROCESS AND CRITICAL FUNCTIONAL PROCESS The following instructions are related to essential adhesives, important safety process

and critical func-

tional process A . Pay special attention in servicing these process. (Pay also close attention in reconnecting the electrical cables.)

1. Essential Adhesives Screw adhesive type: • Unless otherwise specified, use Three-Bond 1324 adhesive (medium-duty type). Keep the screw threads free of oil and water. Instantaneous adhesive: • Use Three-Bond 1733 or Three-Bond 1741E adhesive. Keep the bond areas free of oil and water.

2. Important Safety Process

1. Reconnecting the fuel hose (clearance, hose routes, clamps, etc.) 2. Electrical cabling (engine, instrument panal, controls, etc.) (wiring routes, clamps and couplers)

3. Important Critical Functional Process 1. 2. 3. 4.

Setting up the travel wheel motor (tightening torque) Reassembling the rotary joints (joint direction and shaft set-up) Installing the swivel base bearing and the swivel motor (tightening torque) Fitting the pump couplings (tightening torque)

I-S-7

WSM U17-3Î±/U17-3/U17

I. GENERAL

I-S-8

WSM U17-3α/U17-3/U17

I. GENERAL

D. IMPORTANT INSPECTION ITEMS AFTER REASSEMBLING 1. Operate the Machine and Check for Unusual Noise and Vibrations. 2. Make Sure the Safety Decals and Wireharness Clamps Are in Their Specified Positions. 3. With the Machine Front in a Specified Posture, Check the Amount of Hydraulic Oil Checking the oil level (For further datails, refer to the Operator’s Manual of each model.) 1) Park the machine on a level ground. 2) Make sure the hydraulic oil temperature is in the range of 10-30°C (50-86°F) and see if the oil level is within the specified zone of the oil level gauge. 3) Extend the track cylinder to Max. position. 4) Keep the machine front as shown as following posture. Posture:Extend the rods of the arm and bucket cylinders to max. Place the bucket link on the ground, the offset swing at the center, and the dozer also on the ground. Oil gauge (level) Red circle

Specified machine posture

Some space needed

Leftward swinging

a. Piping (1) General precautions • Tighten the pipe socket to the specified torque. If too tight, the socket itself or a hydraulic component may get damaged. It too loose, an oil leak may result. • In connecting a new hose or pipe, tighten its nut first to the specified torque and then turn it back (about 45°). Then tighten it again to the specified torque. (Do not this to the sealing tape-applied hose or pipe.) • When disconnecting a vertical hose or pipe, separate its bottom connection first. • In desconnecting and reconnecting the hose and pipe, be sure to use two wrenches. With one wrench, restrain the mating part to allow no twist. • Check the mating connector’s sleeve and the hose’s taper for dust deposits and scratches. • When the pipe socket has been tightened up, wipe the joint clean. Apply the maximum operating pressure 2 or 3 times to make sure there is no oil leak.

(2) Hydraulic hose Check the hydraulic hose for too tight a connect or twist. * Excessively tight contact Let’s suppose that a hose is in contact with another hose or other part. If the hose is pulled away by a force of 2 kg but still in contact, it means the contact is too tight.

I-S-9

WSM U17-3α/U17-3/U17

I. GENERAL

(3) Precautions in tightening the bolts and nuts • Use bolts of specified length. • Do not over tighten the bolts: Its threads may get deformed or the fixed part may get damaged. Do not undertighten the bolt either: It may get loose. • In other words, tighten the bolt to the specified torque. • Tighten the bolts and nuts diagonally for even tightness.

Joint body

Nut Sleeve

R (Tapered thread) G (Straight thread)

Steel pipe

Tapered thread

Union nut

I-S-10

WSM U17-3α/U17-3/U17

I. GENERAL

(4) Hose screw

Metric Size Hose Tightening torque N·m kgf·m ft·lbf

Thread size (piping screw)

Wrench size (reference)

Thread size (piping screw)

Torque N·m kgf·m ft·lbf

M12 × 1.5

20 ~ 30 2.0 ~ 3.1 14.75 ~ 22.13

Union nut section

Taper thread section

1/8”

7.8 ~ 11.8 N·m 0.8 ~ 1.2 kgf·m 5.8 ~ 8.7 ft·lbf

14.71 ~ 19.61 N·m 1.5 ~ 20 kgf·m 10.85 ~ 14.47 ft·lbf

17 mm 0.67 in

M14 × 1.5

20 ~ 30 2.0 ~ 3.1 14.75 ~ 22.13

1/4”

24.5 ~ 29.4 2.5 ~ 3.0 18.1 ~ 21.7

36.3 ~ 44.1 3.7 ~ 4.5 26.8 ~ 32.5

19 mm 0.75 in

M16 × 1.5

30 ~ 50 3.1 ~ 5.1 22.13 ~ 36.9

3/8”

49.0 ~ 53.9 5.0 ~ 5.5 36.2 ~ 39.8

49.0 ~ 68.6 5.0 ~ 7.0 36.2 ~ 50.6

22 mm 0.87 in

M18 × 1.5

30 ~ 50 3.1 ~ 5.1 22.13 ~ 36.9

1/2”

58.8 ~ 63.7 6.0 ~ 6.5 43.4 ~ 47.0

83.4 ~ 88.3 8.5 ~ 9.0 61.5 ~ 65.1

27 mm 1.06 in

M22 × 1.5

40 ~ 60 4.1 ~ 6.1 29.5 ~ 44.25

3/4”

117.7 ~ 127.5 12.0 ~ 13.0 86.8 ~ 94.0

127.5 ~ 147.1 13.0 ~ 15.0 94.0 ~ 108.5

36 mm 1.42 in

1”

137.3 ~ 147.1 14.0 ~ 15.0 101.3 ~ 108.5

147.1 ~ 166.7 15.0 ~ 17.0 108.5 ~ 123.0

41 mm 1.61 in

(5) Joint bodies Tightening torque N·m kgf·m ft·lbf

Thread size (piping screw)

Spanner size (reference)

Remarks Steel pipe (OD)

R (tapered thread)

G (straight thread)

1/8”

19.6 ~ 29.4 N·m 2.0 ~ 3.0 kgf·m 14.5 ~ 21.7 ft·lbf

17 mm 0.67 in

8 mm 0.31 in

1/4”

36.3 ~ 44.1 3.7 ~ 4.5 26.8 ~ 32.5

W/O-ring Joint Torque 58.8 ~ 78.5 6~8 43.4 ~ 57.9

19 mm 0.75 in

12 mm 0.47 in

3/8”

39.2 ~ 49.0 4.0 ~ 5.0 28.9 ~ 36.2

W/O-ring Joint Torque 78.5 ~ 98.1 8 ~ 10 57.9 ~ 72.3

23 mm 0.91 in

1/2”

49.0 ~ 68.6 5.0 ~ 7.0 36.2 ~ 50.6

W/O-ring Joint Torque 117.7 ~ 137.3 12 ~ 14 86.8 ~ 101.3

26 mm 1.02 in

I-S-11

When in steel pipe is in use.

15 mm 0.59 in

16 mm 0.63 in

WSM U17-3α/U17-3/U17

I. GENERAL

(6) Tightening torque table for hose clamp (Screw type) Tightening torque N·m kgf·m ft·lbf

No.

Dia. (mm)

Code No.

Ø12 ~ 16

09318-89016

Ø19 ~ 25

09318-89024

Ø31 ~ 40

09318-89039

Ø36 ~ 46

09318-89045

Ø15 ~ 25

RC101-64580

Ø26 ~ 38

68311-72820

Ø13 ~ 20

RB101-63630

Ø40 ~ 55

RC411-63180

Ø77 ~ 95

69284-63170

Ø50 ~ 60

RC401-63190

Ø32 ~ 44

RD411-63820

Ø32 ~ 51

68311-72830

2.5 ~ 3.4 25 ~ 35 1.84 ~ 2.51 4.9 ~ 5.9 50 ~ 60 3.61 ~ 4.35 3.4 ~ 4.4 35 ~ 45 2.58 ~ 3.31

4.9 ~ 5.9 50 ~ 60 3.61 ~ 4.35

(7) Nuts for piping Steel pipe size (O.D. × I.D. × Thickness)

Tightening torque N·m kgf·m ft·lbf

Spanner size (reference)

8 × 6 × 1 mm 0.31 × 0.24 × 0.04 in

29.4 ~ 39.2 3.0 ~ 4.0 21.7 ~ 28.9

17 mm 0.67 in

10 × 7 × 1.5 mm 0.39 × 0.28 × 0.06 in

39.2 ~ 44.1 4.0 ~ 4.5 28.9 ~ 32.5

19 mm 0.75 in

12 × 9 × 1.5 mm 0.47 × 0.35 × 0.06 in

53.9 ~ 63.7 5.5 ~ 6.5 39.7 ~ 47.0

21 mm 0.83 in

16 × 12 × 2 mm 0.63 × 0.47 × 0.08 in

88.3 ~ 98.1 9.0 ~ 10.0 65.1 ~ 72.3

29 mm 1.14 in

18 × 14 × 2 mm 0.71 × 0.55 × 0.08 in

127.5 ~ 137.3 13.0 ~ 14.0 94.0 ~ 101.3

32 mm 1.26 in

27.2 × 21.6 × 2.8 mm 1.07 × 0.85 × 0.11 in

235.4 ~ 254.97 24.0 ~ 16.0 173.6 ~ 188.1

41 mm 1.61 in

I-S-12

Remarks

When sleeve nut is in use.

WSM U17-3α/U17-3/U17

I. GENERAL

(8) Tightening torque of bolts and nuts Refer to the tightness torque table below. Bolts, Nuts

Nomial Dia. SS41

S40C, S45C

SCr4

7.8 ~ 9.3 N·m 0.80 ~ 0.95 kgf·m 5.8 ~ 6.9 ft·lbf

9.8 ~ 11.3 N·m 1.00 ~ 1.15 kgf·m 7.2 ~ 8.3 ft·lbf

12.3 ~ 14.2 N·m 1.25 ~ 1.45 kgf·m 9.0 ~ 10.5 ft·lbf

17.7 ~ 20.6 N·m 1.80 ~ 2.10 kgf·m 13.0 ~ 15.2 ft·lbf

23.5 ~ 27.5 N·m 2.40 ~ 2.80 kgf·m 17.4 ~ 20.3 ft·lbf

29.4 ~ 34.3 N·m 3.00 ~ 3.50 kgf·m 21.7 ~ 25.3 ft·lbf

M10

39.2 ~ 45.1 N·m 4.00 ~ 4.60 kgf·m 28.9 ~ 33.3 ft·lbf

48.0 ~ 55.9 N·m 4.90 ~ 5.70 kgf·m 35.4 ~ 41.2 ft·lbf

60.8 ~ 70.6 N·m 6.20 ~ 7.20 kgf·m 44.8 ~ 52.1 ft·lbf

M12

62.8 ~ 72.6 N·m 6.40 ~ 7.40 kgf·m 46.3 ~ 53.5 ft·lbf

77.5 ~ 90.2 N·m 7.90 ~ 9.20 kgf·m 57.1 ~ 66.5 ft·lbf

103.0 ~ 117.7 N·m 10.50 ~ 12.00 kgf·m 75.9~ 86.8 ft·lbf

M14

107.9 ~ 125.5 N·m 11.00 ~ 12.80 kgf·m 79.6 ~ 92.6 ft·lbf

123.6 ~ 147.1 N·m 12.60 ~ 15.0 kgf·m 91.1 ~ 108.5 ft·lbf

166.7 ~ 196.1 N·m 17.00 ~ 20.00 kgf·m 123.0 ~ 144.7 ft·lbf

M16

166.7 ~ 191.2 N·m 17.00 ~ 19.50 kgf·m 123.0 ~ 141.0 ft·lbf

196.1 ~ 225.6 N·m 20.00 ~ 23.00 kgf·m 144.7 ~ 166.4 ft·lbf

259.9 ~ 304.0 N·m 26.50 ~ 31.00 kgf·m 191.7 ~ 224.2 ft·lbf

M18

245.2 ~ 284.4 N·m 25.00 ~ 29.0 kgf·m 180.8 ~ 209.7 ft·lbf

274.6 ~ 318.7 N·m 28.00 ~ 32.50 kgf·m 202.5 ~ 235.1 ft·lbf

343.2~ 402.1 N·m 35.00 ~ 41.00 kgf·m 253.2 ~ 296.5 ft·lbf

M20

333.4~ 392.2 N·m 34.00 ~ 40.00 kgf·m 245.9 ~ 389.3 ft·lbf

367.7 ~ 431.5 N·m 37.50 ~ 44.0 kgf·m 271.2 ~ 318.2 ft·lbf

519.8 ~ 568.8 N·m 53.00 ~ 58.00 kgf·m 383.3 ~ 419.5 ft·lbf

(9) Types and materials of bolts and nuts [ex. bolts] Types

Material

Tensile strength

Hardness

SS41

Over 392 MPa 4000 kgf/cm2 56892 lbf/in2

HRB 62 ~ 98

No mark or marked 4

S40C S45C

Over 686 MPa 7000 kgf/cm2 99561 lbf/in2

HRC 20 ~ 28

Marked 7

SCr4

Over 882 MPa 9000 kgf/cm2 128007 lbf/in2

HRC 28 ~ 34

Marked 9

I-S-13

Bolt head marking

WSM U17-3α/U17-3/U17

I. GENERAL

(10) Washer-equipped elbow Tightening torque Size

N·m

kgf·m

ft·lbs

G1/4

25 ~ 30

2.5 ~ 3.0

18 ~ 22

G3/8

49 ~ 54

5.0 ~ 5.5

36 ~ 40

G1/2

59 ~ 64

6.0 ~ 6.5

43 ~ 47

G3/4 G1

118 ~ 127

12.0 ~ 13.0

87 ~ 94

Tightening procedure 1) Connecting with the valve • Screw in the elbow by hand until the washer comes into contact. Note: Clean up the mating seal beforehand.

2) Positioning • Turn the elbow back to its set position. Note: Do not make any more than one turn back.

3) Fixing • Tighten up the lock nut with a wrench. • Lock nut tightening torque G1/4: 25 ~ 30 N·m (2.5 ~ 3.0 kgf·m, 18 ~ 22 ft·lbs) G3/8: 50 ~ 55 N·m (5.0 ~ 5.5 kgf·m, 36 ~ 40 ft·lbs) G1/2: 60 ~ 65 N·m (6.0 ~ 6.5 kgf·m, 43 ~ 47 ft·lbs) G3/4: 118 ~ 127 N·m (12.0 ~ 13.0 kgf·m, 87 ~ 94 ft·lbs) G1: 118 ~ 127 N·m (12.0 ~ 13.0 kgf·m, 87 ~ 94 ft·lbs)

(11) Adhesives 1. Thread adhesive Types of thread adhesive

Loctite 271 or equivalent (heavy-duty) ThreeBond 1305P or equivalent (heavy-duty) ThreeBond TB1401B or equivalent (light-duty) ThreeBond 1324 (medium-duty) unless otherwise specified

* No oil and water allowed on the threads. Type of instant adhesive

ThreeBond 1733 or 1741E

* No oil and water allowed on the threads. 2. Radiator hose sealant Sealant

ThreeBond #1208E or equivalent

I-S-14

WSM U17-3Îą/U17-3/U17

I. GENERAL

E. MAINTENANCE INTERVALS a. EU-version [Operator servicing]

General maintenance

Elapsed hours of operation 50

100

150

200

250

300

350

400

450

500

Interval

Checking the engine oil level

daily

Check hydraulic oil level

daily

Check fuel level

daily

Check coolant level

daily

Lubricate front-end attachments Checking the radiator and oil cooler

daily daily

Check electric cables and connections

daily

Check water separator

daily

Check V-belt

daily

Drain water from the fuel reservoir

500 h

Lubricate the swivel gear

50 h

Battery service

50 h

Tracks and chassis: clean, visually inspect and check tension

weekly (50 h)

100 h

Check nuts and bolts Check, clean air filter Grease the swivel bearing

1.)

200 h

1.) Under dusty conditions the air filter must be cleaned more frequently or replaced.

I-S-15

WSM U17-3Îą/U17-3/U17

I. GENERAL

[Operator servicing]

General maintenance

Elapsed hours of operation 550

600

650

700

750

800

850

900

950

1000

Interval

Checking the engine oil level

daily

Check hydraulic oil level

daily

Check fuel level

daily

Check coolant level

daily

Lubricate front-end attachments Checking the radiator and oil cooler

daily daily

Check electric cables and connections

daily

Check water separator

daily

Check V-belt

daily

Drain water from the fuel reservoir

500 h

Lubricate the swivel gear

50 h

Battery service

50 h

Tracks and chassis: clean, visually inspect and check tension

weekly (50 h)

100 h

Check nuts and bolts Check, clean air filter Grease the swivel bearing

1.)

200 h

1.) Under dusty conditions the air filter must be cleaned more frequently or replaced.

I-S-16

WSM U17-3α/U17-3/U17

I. GENERAL

[Servicing by skilled personnel or KUBOTA dealer]

Elapsed hours of operation *

Servicing

100

150

200

250

300

350

400

450

500

Interval

Check/adjust V-belt tension

250 h

Check coolant hoses and clamps

250 h

Grease pilot valve linkage

250 h

500 h

Change engine oil and oil filter Replace the fuel filter

4.)

Change return filter for the hydraulic oil tank 3.) Replace the drive unit oil Change hydraulic oil and suction filter 2.) Replace the in-line filter Replace the air filter elements 1.)

Please contact your KUBOTA dealer.

1000 h

Please contact your KUBOTA dealer.

1000 h 1000 h

Change running gear and track roller oil

Please contact your KUBOTA dealer.

2000 h

Check alternator and starter motor

Please contact your KUBOTA dealer.

2000 h

Check electric cables and connections

Please contact your KUBOTA dealer.

Annually

Safety inspection

Annually

Replace the coolant and rinse the cooling system

every 2 years

Replace coolant hoses and clamps

Please contact your KUBOTA dealer.

Change hydraulic hoses

Please contact your KUBOTA dealer.

* 1.) 2.)

3.) 4.)

250 h every 6 years

The servicing identified with z must be carried out after the specified hours of operation after initial operation have been reached. Under dusty conditions the air filter must be cleaned more frequently or replaced. When using a hydraulic hammer over 20% → every 800 h. When using a hydraulic hammer over 40% → every 400 h. When using a hydraulic hammer over 60% → every 300 h. When using a hydraulic hammer over 80% → every 200 h. When using a hydraulic hammer up to 50% → every 200 h. When using a hydraulic hammer over 50% → every 100 h. Replace the return filter approximately 250 hours after the initial operation. Earlier if necessary.

I-S-16-1

WSM U17-3α/U17-3/U17

I. GENERAL

[Servicing by skilled personnel or KUBOTA dealer]

Elapsed hours of operation

Servicing

550

600

650

700

750

800

850

900

950

1000

Interval

Check/adjust V-belt tension

250 h

Check coolant hoses and clamps

250 h

Grease pilot valve linkage

250 h

500 h

4.)

500 h

Change return filter for the hydraulic oil tank 3.)

500 h

Change engine oil and oil filter Replace the fuel filter

Please contact your KUBOTA dealer.

Replace the drive unit oil Change hydraulic oil and suction filter 2.) Replace the in-line filter Replace the air filter elements 1.)

Please contact your KUBOTA dealer.

1000 h

Please contact your KUBOTA dealer.

1000 h 1000 h

Change running gear and track roller oil

Please contact your KUBOTA dealer.

2000 h

Check alternator and starter motor

Please contact your KUBOTA dealer.

2000 h

Check electric cables and connections

Please contact your KUBOTA dealer.

Annually

Safety inspection

Annually

Replace the coolant and rinse the cooling system

every 2 years

Replace coolant hoses and clamps

Please contact your KUBOTA dealer.

Change hydraulic hoses

Please contact your KUBOTA dealer.

250 h every 6 years

1.) Under dusty conditions the air filter must be cleaned more frequently or replaced. 2.) When using a hydraulic hammer over 20% → every 800 h. When using a hydraulic hammer over 40% → every 400 h. When using a hydraulic hammer over 60% → every 300 h. When using a hydraulic hammer over 80% → every 200 h. 3.) When using a hydraulic hammer up to 50% → every 200 h. When using a hydraulic hammer over 50% → every 100 h. 4.) Earlier if necessary.

I-S-16-2

WSM U17-3Îą/U17-3/U17

I. GENERAL

b. PP (KTC, KCL)-version No.

Check points

Coolant

Fuel

Intervals check

Hour meter indicator 50

100

Engine oil

Daily check

check

Daily check

change

Radiator and oil cooler

check

Daily check

Engine and electrical wiring

check

Daily check

Fuel tank, Fuel filter

drain check

change

Battery condition Greasing swing bearing teeth

Fan belt tension Radiator hoses and clamps

Air filter element

Outer element Inner element

400

450

Consequently

every 500 hrs

Lubrication points

350

Daily check

300

every 2 years

check

250

Daily check

Hydraulic oil

200

change

150

every 1000 hrs

every year every 50 hrs every 50 hrs

every 50 hrs

adjust

every 200 hrs

check

every 200 hrs

replace

every 2 years

clean

every 200 hrs

replace

every 1000 hrs

replace

every 1000 hrs

Greasing swing ball bearings

every 200 hrs

Fuel filter element

replace

every 400 hrs

Engine oil filter

replace

every 500 hrs

Drive unit oil

change

every 500 hrs

Hydraulic return filter element

replace

every 500 hrs

Hydraulic suction filter element

replace

every 1000 hrs

Fuel injection nozzle injection pressure

check

every 1500 hrs

Front idler and track roller oil

change

every 2000 hrs

Alternator and starter motor

check

every 2000 hrs

Injection pump

check

every 3000 hrs

Radiator system

Fuel line and Intake air line

Daily check

rinse

every 2 years

check

every 200 hrs

replace

every 2 years

* 500 thru 1000 continued to the following table.

I-S-17

WSM U17-3Îą/U17-3/U17

No.

Check points

Coolant

Fuel

I. GENERAL

Intervals check

Hour meter indicator 500

550

Engine oil

Daily check

check

Daily check

change

Radiator and oil cooler

check

Daily check

Engine and electrical wiring

check

Daily check

Fuel tank, Fuel filter

drain check

change

Battery condition Greasing swing bearing teeth

Fan belt tension Radiator hoses and clamps

Air filter element

Outer element Inner element

1000

Consequently

every 500 hrs

Lubrication points

800

Daily check

750

every 2 years

check

700

Daily check

Hydraulic oil

650

change

600

every 1000 hrs

every year every 50 hrs every 50 hrs

every 50 hrs

adjust

every 200 hrs

check

every 200 hrs

replace

every 2 years

clean

every 200 hrs

replace

every 1000 hrs

replace

every 1000 hrs

Greasing swing ball bearings

every 200 hrs

Fuel filter element

replace

every 400 hrs

Engine oil filter

replace

every 500 hrs

Drive unit oil

change

every 500 hrs

Hydraulic return filter element

replace

every 500 hrs

Hydraulic suction filter element

replace

every 1000 hrs

Fuel injection nozzle injection pressure

check

every 1500 hrs

Front idler and track roller oil

change

every 2000 hrs

Alternator and starter motor

check

every 2000 hrs

Injection pump

check

every 3000 hrs

Radiator system

Fuel line and Intake air line

Daily check

rinse

every 2 years

check

every 200 hrs

replace

every 2 years

First operation *1 When using a hydraulic breaker, change hydraulic oil and return filter according to the table on "Hydraulic Oil Change (Including Exchange of the Suction Filter in the Hydraulic Tank) under "EVERY 1000 SERVICE HOURS" in the chapter "REGULAR CHECKS AND MAINTENANCE WORK". *2 Clean and replace the air filter more frequently if used under dusty conditions. By heavy soiling, replace the filter. *3 Replace only if necessary. *4 Consult your local KUBOTA Dealer for this service. A The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S. EPA nonroad emission regulation. As the engine owner, you are responsible for the performance of the required maintenance on the engine according to the above instruction. Please see the Warranty Statement in detail.

I-S-18

WSM U17-3α/U17-3/U17

I. GENERAL

c. KTA-version No.

Checkpoints

Hour meter indicator

Intervals

50 100 150 200 250 300 350 400 450 500 550 600 1000 2000

1 Fuel

check Daily check

2 Engine oil

check Daily check change

3 Hydraulic oil** 4 Coolant

Consequently

Ref. page 49 50

every 250 hrs

56 51

check Daily check change

every 1000 hrs

63 49

check Daily check change

every 2 years

64 52

5 Lubrication points

check Daily check

6 Radiator

check Daily check

7 Battery condition

check

8 Electrical lines

check Daily check, Annual servicing

Greasing of swing 9 bearing teeth

53 every 50 hrs 50,51 64 every 50 hrs

10 Drive unit oil

change

every 500 hrs

11 Fan belt tension

adjust

every 200 hrs

check

every 200 hrs

change

every 2 years

clean

every 200 hrs

change

every 1000 hrs

every 200 hrs

Radiator hoses and clamps

13 Air filter element*

Greasing of swing ball bearings

Fuel pipes and hoses

check

every 200 hrs

change

every 2 years

16 Engine oil filter

change

every 250 hrs

check

every 50 hrs

change

every 500 hrs

Hydraulic return 18 filter element

change

every 1000 hrs

Hydraulic suction filter element

change

every 1000 hrs

Front idler and track roller oil

change

every 2000 hrs

Dynamo and 21 starter motor

check

every 2000 hrs

22 Radiator system

rinse

every 2 years

Fuel injection nozzle 23 (Injection pressure) check

every 1500 hrs

24 Injection pump

every 3000 hrs

17 Fuel filter

check

IMPORTANT: • * Clean the air filter more frequently if used in dusty conditions. With heavy soiling, replace the filter. ** When using a hydraulic breaker, change hydraulic oil and return filter according to the table on "Hydraulic Oil Change(Including Exchange of the Suction Filter in the Hydraulic Tank)" under "EVERY 1000 SERVICE HOURS" in "REGULAR CHECKS AND MAINTENANCE WORK". • The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA nonroad emission regulation. As the engine owner, you are responsible for the performance of the required maintenance on the engine according to the above instruction. Please see the Warranty Statement in detail.

I-S-19

WSM U17-3α/U17-3/U17

I. GENERAL

d. Hydraulic Oil Check for Machines with Hydraulic Breakers The hydraulic oil change after 1000 operating hours in the operator’s manual is based on the type of work done. Following inspection measure are valid when hydraulic breakers are used: 1. Changing and filling up of hydraulic oil 1) The hydraulic oil must be changed more often when breakers are used because the machine is subject to harder conditions than at normal excavating work. 2) Use only the recommended oils mentioned in the operator’s manual when changing or fill oil. 3) When filling up oil, never mix oils of different makes. 2. Changing the return filter and oil 1) The filter must be changed more often because of contamination resulting from the frequent assembly and disassembly of the hoses. 2) Use the correct replacement filter. 3) Oil change according to operating hours.

Normal excavator work

Breaker work portion

Hydraulic oil

Return Filter

every 1000 hrs.

500 hrs.

20%

every 800 hrs.

40%

every 400 hrs.

60%

every 300 hrs.

More than 80%

every 200 hrs.

Suction Filter

300 hrs. 1000 hrs. 100 hrs.

3. Kubota’s recommended breakers for U17-3α and U17/U17-3. (Japanese breakers) Furukawa

HB2G

Tokuu

TNB-1E

Maruzen

MHB-71

Nippon Pneumatic

H-08X

I-S-20

WSM U17-3α/U17-3/U17

I. GENERAL

e. Maintenance Items (1) Drive unit Oil Change (First Oil Change of the 100 hours) CAUTION To avoid personal injury: • Lower attachments on the ground, stop the engine and remove the key before undertaking the oil change. 1) Rotate the crawler so that the drain plug of the drive unit is in the bottom position. 2) Remove the drain plug to let the oil run out. Screw in and tighten the drain plug again and fill with gear oil through the oil check port. 3) Fill oil until it overflows out of the oil check port. Gear oil volumes

Approx. 0.25 L (0.07 USgal.)

Oil change • first oil change after 100 hrs • then every 500 hrs • or at least once a year

(1) Oil check port (also serves as oil filling port) (2) Drain plug

4) Use prescribed gear oil SAE 90.

(2) Inspection and Cleaning of the Air Filter Element Open the engine bonnet and remove the dust-cover. Take out only outer element, clean the element, case interior and reassemble. During reassembly, take care to install the dust-cover so that its TOP mark (arrow) faces up-wards. Do not remove the inner element. IMPORTANT: • Should the machine be used in extremely dusty areas, the air filter element must be inspected and cleaned more frequently than in the specified maintenance periods. • The air filter has a dry element, keep free from oil. • Do not run the engine without the air filter.

(1) (2) (3) (4)

Outer element Inner element Dust-cover Clamps

I-S-21

WSM U17-3α/U17-3/U17

I. GENERAL

CAUTION To avoid personal injury: • Wear eye protection.

Cleaning with compressed air Pressure of compressed air must be under 205 kPa (2.1 kgf/cm2, 30 psi) and the cartridge should be blown clean from the inside to the outside until the dust deposits are remarkably reduced. IMPORTANT: • If the air suction is still inadequate, or the color of the exhaust gases is abnormal even after the cleaning, the air filter element must be replaced.

(3) Cleaning the Track Frame Slide Pipes When the slide pipes of the track frame are clogged or adhered with soil or sand, clean the slide pipes in the following manner according to need. WARNING To avoid the personal injury or death: • Place the machine on even ground when cleaning the track frame slide pipes. 1. First lift the machine off the ground using the dozer blade and boom functions. 2. Switch the track width change / dozer select lever to the “Track width change” position. 3. Push the control lever forward, and expand the track width to 1240 mm (48.8 in.). 4. Remove soil and sand adhered to the slide pipes, then put grease evenly around the pipes. Make sure all 4 slide pipes are greased. 5. Retract and expand the track width repeatedly for a few times by moving the control lever, so that the grease is spread adequately. 6. Switch the track width change / dozer select lever to the “Dozer” position. 7. Place the machine down on the ground carefully by moving the dozer blade and the boom.

I-S-22

(1) Track frame slide pipes

WSM U17-3Îą/U17-3/U17

I. GENERAL

f. Troubleshooting for Operators If the excavator does not show the desired performance, or when trouble arises, refer to the table below and undertake appropriate measures. Trouble

Cause

Countermeasure

Fuel is too viscous

* Check fuel tank and filter * Remove impurities and water * If necessary, replace filter

Air or water in the fuel system

* Remove water from the fuel tank * Check fuel pipe joint bolts and nuts for looseness * Purging of the fuel system (for fuel filter and injection pump, see "PURGING OF THE FUEL SYSTEM" in "OTHER ADJUSTMENTS AND REPLACEMENTS".)

Oil viscosity is too high that the engine runs sluggishly in winter

* Pour hot water over the radiator * Use oils of different viscosities depending on the ambient temperature. (Use SAE10W, SAE10W-30 or SAE10W-40)

Battery is almost dead; insufficient compression

* Recharge battery

Low fuel level

* Check fuel and add if necessary

Starting difficulties

Insufficient engine power

Engine

Engine suddenly stops Abnormal exhaust gas color

Drive System

Hydraulic System

Water temperature too high (Overheating)

Boom, arm, bucket, drive, swing and dozer power is too low Non-function of swing motor

Deviation of drive direction

Clogged air cleaner

* Clean the air filter element

Low fuel level

* Check fuel and add if necessary * Purge the fuel system

Poor fuel

* Use high quality fuel

Too much engine oil

* Drain engine oil to prescribed oil level

Defective seal of the water pump

* Replace

Worn or torn fan belt

* Adjust or replace

Thermostat is defect

* Replace

Coolant level too low

* Fill to prescribed level

Radiator grill or fins are clogged

* Clean

Coolant is contaminated with rust from the cylinder head or crank case

* Replace coolant fluid and add anti-rust

Defective radiator cap (Evaporation)

* Replace

Corroded coolant pipes

* Clean

Continuous operation under full load

* Reduce load

Cylinder head gasket is damaged (Coolant loss)

* Replace

Engine oil level too low

* Fill to prescribed level

Maladjustment of fuel injection

* Readjust ignition timing

Use of poor fuel

* Use prescribed fuel

Hydraulic oil level too low

* Add oil

Leakages of hoses and/or joints

* Replace hose or joint

Swing lock pin is in lock position

* Remove swing lock pin in unlock position

Blocked through stones

* Remove

Crawler too loose or too tight

* Adjust accordingly

I-S-23

WSM U17-3Îą/U17-3/U17

I. GENERAL

g. Periodic Replacement of Important Component Parts To ensure safety in operation, you are strongly requested to inspect and service the machine at regular intervals. For added safety, ask your KUBOTA dealer to replace the following important component parts. These parts are prone to degradation in material or subject to wear and tear with time. It is difficult to judge how much they have been affected at regular inspection. It is therefore necessary to replace them with new ones, whether wear is visible or not after a specified time of use. If any of them is found worn even before the specified use, it must be repaired or replaced the same way as other parts. If any of the hose clamps is found deformed or cracked, the hose clamp must also be replaced. For the hydraulic hoses other than the ones to be replaced periodically, inspect them for the following points. If found unusual, tighten them up, replace them. When replacing the hydraulic hoses, change their O rings and sealings with new ones. For replacement of the important parts, contact your KUBOTA dealer. â&#x20AC;˘ At the following periodic inspections, check the fuel hoses and hydraulic hoses as well. Inspection Interval

Check points

Daily Checks

Oil leak at fuel and hydraulic hose connections and points

Every month

Oil leak at fuel and hydraulic hose connections and points Damages at fuel and hydraulic hose (cracks, chafing)

Every year

Oil leak at fuel and hydraulic hose connections and points Interference, deformation, degradation, twist and other damages (cracks, chafing) of fuel and hydraulic hoses

List of important component parts No. 1

Component parts

Q'ty

Fuel hose (Fuel tank-Fuel filter)

Fuel hose (Fuel filter-Fuel pump)

Fuel hose (Fuel pump-Fuel nozzle)

Fuel hose (Fuel nozzle-Fuel tank)

Fuel hose (Fuel tank-Fuel drain)

Hydraulic hose (Main pump suction)

Hydraulic hose (Main pump delivery)

Hydraulic hose (Boom cylinder)

Hydraulic hose (Arm cylinder)

Hydraulic hose (Bucket cylinder)

Hydraulic hose (Swing cylinder)

Hydraulic hose (Dozer cylinder)

Hydraulic hose (Service port)

Period

Every 2 years or 4000 hours

To prevent serious damage to the hydraulic system, use only KUBOTA genuine hydraulic hose.

I-S-24

WSM U17-3α/U17-3/U17

I. GENERAL

h. Recommended Oils IMPORTANT 1. ISO 46 viscosity grade is being used at the assembly line before delivery. 2. Use engine oil API service classification CD, CE or CF. 3. Use SAE 90 (API, CLA/GL5) as drive unit oil for all seasons. Application

Engine oil

In winter or by low temperatures

In summer or by high ambient temperatures

All-Season engine oil

Gear oil

In winter or by low temperatures

In summer or by high ambient temperatures

Viscosity

Shell

Mobil

Exxon

SAE 10W

Shell Rotella T10W Shell Rimula 10W

Mobil Delvac 1310

XD-3 10W XD-3 Extra 10W

SAE 20W

Shell Rotella T20W-2 Shell Rimula 20W-20

Mobil Delvac 1320

XD-3 20W-20 XD-3 Extra 20W-20

SAE 30

Shell Rotella T30 Shell Rimula 30

Mobil Delvac 1330

XD-3 30 XD-3 Extra 30

SAE 40

Shell Rotella T40 Shell Rimula 40

Mobil Delvac 1340

XD-3 40 XD-3 Extra 40

SAE 50

Shell Rimula 50

Mobil Delvac 1350

Multi-purpose SAE 75 SAE 80 SAE 90

Mobilube HD80W-90 Shell Oil S8643

MIL-L-2105C

Mobilube HD80W-90 Shell Spirax HD80W

Shell Spirax HD90

Mobilube 46

MIL-L-2105

Mobilube HD80W-90

MIL-L-2105C

Mobilube HD85W-140

MIL-L-2105C MIL-L-2105C

Shell Spirax HD140

Mobilube HD80W-140

Multi-purpose

Shell Spirax HD80W Shell Spirax HD85W

Mobilube HD80W-90

GX80W-90

ISO 32

Shell Tellus T32

Mobil DTE-Oil 13

NUTO H32

ISO 46

Shell Tellus T46

Mobil DTE-Oil 15

NUTO H46

ISO 68

Shell Tellus T68

Mobil DTE-Oil 16

NUTO H68

Grease

Shell Alvania EP2

Mobilux EP2

BEACON Q2

Fuel

Light oil No. 2-D (ASTM D975)

Fuel under -5°C

Light oil No. 1-D (ASTM D975)

Hydraulic oil

In winter or by low temperatures In summer or by high ambient temperatures

MIL-L-2104C MIL-L-2104D

XD-3 15W-40 XD-3 Extra 15W-40

Shell Rotella T15W

SAE 140

All-weather gear oil

MIL-Standard

I-S-25

MIL-L-2105C

WSM U17-3Î±/U17-3/U17

I. GENERAL

i. Lifting Capacity â&#x20AC;¢

7KH OLIWLQJ FDSDFLW\ RI WKH H[FDYDWRU LV EDVHG RQ ,62 DQG GRHV QRW H[FHHG RI WKH VWDWLF WLOW ORDG RU RI WKH K\GUDXOLF OLIWLQJ FDSDFLW\ RI WKH PDFKLQH

â&#x20AC;¢

7KH OLIWLQJ FDSDFLW\ LV PHDVXUHG DW WKH IURQW SLQ SDUW RI WKH DUP ZLWK WKH DUP IXOO\ H[WHQGHG 7KH ERRP F\OLQGHU LV WKH RSHUDWLQJ F\OLQGHU The excavator as delivered may only transport materials in the bucket. The lifting of loads with the bucket or any other means of attachment is not allowed. The excavator can be retrofitted for lifting loads.

â&#x20AC;¢

7KH OLIWLQJ FRQGLWLRQV DUH

1. 2. 3.

Over front end, dozer down, standard arm Over front end, dozer up, standard arm Over side, standard arm

Do not lift loads which exceed the values indicated in the lifting capacity tables.

The values given in the tables apply only to level and hard grounds. When working on soft ground, the machine can tip over easily, as the load is concentrated on one side only and the track or the dozer can dig into the ground. The values given in the tables apply only for loads without bucket. If a bucket is used, the weight of the bucket must be subtracted from the values in the tables. The weight of mounted accessories (e.g. hydraulic hammer) must be subtracted from the lifting capacity.

When lifting loads using the excavator with a lifting capacity (acc. to ISO 10567:1992) of more than 1000 kg or a tilting moment Â&#x2022; 40,000 Nm, the excavator should be equipped with additional devices as described in EN 474-5 / section 4.1.7.5.

I-S-26

WSM U17-3α/U17-3/U17

I. GENERAL

(1) U17-3α Lifting capacity over front end, dozer down MODEL U17-3α KBM

SPECIFICATION

CANOPY VERSION WITH RUBBER CRAWLER Standard arm kN (t)

Height [mm]

Minimum

1500

2000

Load radius (mm) Maxi2500 mum

4500 4000 3500 3000 3.7 (0.37) 3.6 (0.36) 4.0 (0.41) 4.6 (0.47) 4.9 (0.50) 4.8 (0.49) 4.3 (0.44) 3.6 (0.37)

2500 2000 5.2 (0.53)

1500 1000 500 GL

0 -500 -1000

7.3 (0.75) 11.0 (1.12)

-1500

8.1 (0.83) 7.0 (0.71) 5.3 (0.54)

3.1 (0.32) 4.5 (0.46) 6.2 (0.63) 6.9 (0.70) 6.6 (0.67) 5.8 (0.60) 4.9 (0.50) 3.7 (0.37)

3.6 (0.37) 3.8 (0.38) 3.8 (0.39) 3.6 (0.37) 3.2 (0.33)

-2000 -2500 Lifting capacity over front end, dozer up MODEL U17-3α KBM

SPECIFICATION

CANOPY VERSION WITH RUBBER CRAWLER Standard arm kN (t)

Height [mm]

Minimum

1500

2000

Load radius (mm) Maxi2500 mum

4500 4000 3500 3000 2500 2000 5.2 (0.53)

1500 1000 500 GL

0 -500 -1000 -1500

7.3 (0.75) 11.0 (1.12)

5.5 (0.56) 5.6 (0.57) 5.3 (0.54)

3.1 (0.32) 4.0 (0.41) 3.8 (0.39) 3.6 (0.37) 3.5 (0.36) 3.5 (0.36) 3.5 (0.36) 3.6 (0.37)

2.9 (0.30) 2.9 (0.30) 2.8 (0.29) 2.7 (0.28) 2.6 (0.27) 2.6 (0.27) 2.5 (0.26) 2.5 (0.26)

-2000 -2500

I-S-27

2.1 (0.22) 2.1 (0.21) 2.0 (0.20) 2.0 (0.20) 2.0 (0.20)

WSM U17-3α/U17-3/U17

I. GENERAL

Lifting capacity over side (track width 1240 mm) MODEL U17-3α SPECIFICATION

CANOPY VERSION WITH RUBBER CRAWLER

KBM

Standard arm kN (t)

Height [mm]

Minimum

1500

2000

Load radius (mm) Maxi2500 mum

4500 4000 3500 3000 2500 2000 5.2 (0.53)

1500 1000 500 GL

0 -500 -1000 -1500

7.3 (0.75) 10.9 (1.11)

5.0 (0.51) 5.1 (0.52) 5.2 (0.53)

3.1 (0.32) 3.7 (0.38) 3.5 (0.36) 3.3 (0.34) 3.3 (0.33) 3.2 (0.33) 3.2 (0.33) 3.3 (0.34)

2.7 (0.28) 2.7 (0.28) 2.7 (0.28) 2.6 (0.26) 2.5 (0.24) 2.4 (0.24) 2.4 (0.24) 2.4 (0.24)

-2000 -2500

I-S-28

2.0 (0.20) 2.0 (0.20) 1.9 (0.17) 1.9 (0.19) 1.8 (0.19)

WSM U17-3Î±/U17-3/U17

I. GENERAL

(2) U17-3, U17 ROPS CANOPY RUBBER TRACK LIFTING CAPACITY OVER-FRONT BLADE DOWN Unit=1kN LIFTING POINT HEIGHT (m) 2.5 2.0 1.5 1.0 GL 0.5 0 -0.5 -1.0 -1.5

MIN

7.3 11.0

LIFT POINT RADIUS (m) 2.0 1.5 2.5 3.7 3.1 3.6 4.5 5.2 4.0 6.2 4.6 6.9 4.9 6.6 4.8 5.8 8.1 4.3 4.9 7.0 3.6 3.7 5.3

MAX 3.6 3.8 3.8 3.6 3.2

LIFTING CAPACITY OVER-FRONT BLADE UP Unit=1kN LIFTING POINT HEIGHT (m) 2.5 2.0 1.5 1.0 GL 0.5 0 -0.5 -1.0 -1.5

MIN

7.3 11.0

LIFT POINT RADIUS (m) 2.0 1.5 2.5 2.9 3.1 2.9 4.0 5.2 2.8 3.8 2.7 3.6 2.6 3.5 2.6 3.5 5.5 2.5 3.5 5.6 2.5 3.6 5.3

MAX 2.1 2.1 2.0 2.0 2.0

LIFTING CAPACITY OVER-SIDE TRACK WIDTH 1240mm Unit=1kN LIFTING POINT HEIGHT (m) 2.5 2.0 1.5 1.0 GL 0.5 0 -0.5 -1.0 -1.5

MIN

6.1 6.1

LIFT POINT RADIUS (m) 2.0 2.5 1.5 1.8 2.6 1.8 2.5 1.8 3.9 2.3 1.7 2.1 1.6 2.1 1.5 2.0 1.5 3.1 2.1 1.5 3.1 2.1 3.2

MAX 1.3 1.3 1.2 1.2 1.2

WARNING To avoid personal injury or death: Operate always in standard track width 1240mm(49.0 in), except to pass through narrow space. Do not operate in narrow track width 990mm(39.0 in), it makes risk of the excavator tipping over.

LIFTING CAPACITY OVER-SIDE TRACK WIDTH 39.0 in ONLY REFERENCE Unit=1000 lbs. LIFT POINT HEIGHT (ft) 8 6 4 2 GL 0 -2 -4

MIN

0.97 0.98

LIFT POINT RADIUS (ft) 8 6 0.43 0.43 0.67 0.40 0.62 0.38 0.55 0.36 0.52 0.35 0.52 0.36 0.53

MAX

0.28 0.27 0.26

LIFTING CAPACITY OVER-SIDE TRACK WIDTH 990mm ONLY REFERENCE Unit=1kN LIFTING POINT HEIGHT (m) 2.5 2.0 1.5 1.0 GL 0.5 0 -0.5 -1.0 -1.5

I-S-29

MIN

6.1 6.1

LIFT POINT RADIUS (m) 2.0 2.5 1.5 1.8 2.6 1.8 2.5 1.8 3.9 2.3 1.7 2.1 1.6 2.1 1.5 2.0 1.5 3.1 2.1 1.5 3.1 2.1 3.2

MAX 1.3 1.3 1.2 1.2 1.2

WSM U17-3Î±/U17-3/U17

I. GENERAL

I-S-30

WSM U17-3α/U17-3/U17

I. GENERAL

F. PRODUCT INFORMATION

a. U17-3α Development Concept • The engine, D902 of KX41-3 for North America is substituted for D782 to face competitive machines with larger engines. • Traveling & turning performance are advanced and durability is also upgraded with a travel motor hose inner-packed. Kubota original digital meter and anti-theft system are introduced as well. • Additionally, outer flange track roller, short-pitched rubber track, digital meter, anti-theft system and work light are upgraded. • The model U15-3 is re-named U17-3α to compete with machines labeled 1.7~1.8t.

b. Why Minor Change? Be more competitive through advanced “Performance“ & “Quality“! 1) New Engine Higher output engine D782 → D902 2) Enhancement of undercarriage • Advanced traction force • Increased travel motor torque • Outer-flange track roller • Short-pitched rubber track • Travel motor hose protection

New model name - ”U17-3α” (EU-version)

I-S-31

WSM U17-3α/U17-3/U17

I. GENERAL

c. Quick Chart : additional sales feature : enhancement of undercarriage : other design change

* Power socket (12V)

1) Engine D782-BH 9) Steel track (OPT) Track link height 10mm(0.39”) lowered

D902-BH

2) Pump capacity 7.2 7.5cc (same as KX41-3)

4) Dozer arm 45mm (1.79”) extended

3) Kubota original digital meter

* Undercarriage 20mm (0.79”) forward designed 5) Track roller Outer flange type 6) Short-pitched rubber track

7) Travel motor hose protected

I-S-32

8) Travel motor torque increased

WSM U17-3α/U17-3/U17

I. GENERAL

d. Major Sales Feature 1) Engine U15-3

U17-3α

Difference

D782-EBH

D902-E3BH

kW(PS)

9.6(13)

11.8(16)

2.2(+3)

rpm

2300

equivalent

3 / 0.778

3 / 0.898

- / +0.12

mode output (sales catalog) speed

number of cylinder/ displacement

2) Pump capacity 7.2 ⇒ 7.5cc (Same pump as KX41-3 ) 3) Kubota Original Digital Meter Newly equipped digital meter same as other KX-3/U-3 series, over 1.5t class. For EU market, an easier key setting of Anti-theft system is introduced. 4) Dozer arm 45mm extended for easier cleaning with the dozer edge. 5) Outer-flange type track roller 6) Short-pitched rubber track (less travel vibration)

7) Travel motor’s torque increased

Travel speed

Traction force

U15-3

U17-3α

Difference

km/h

2.2 / 4.1

equivalent

Low/high (measured)

10.7/5.3

14.7/7.7

+4.0 / +2.4

Low/high (theoretical)

12.9 / 6.5

14.2/7.1

+1.3 / +0.6

Low/high

I-S-33

WSM U17-3Îą/U17-3/U17

I. GENERAL

8) Protected travel motor hose Travel motor hoses are covered for better look and durability. 9) Steel track (OPT) Track link height is lowered by 10mm to prevent from being stuck with soil.

e. Specifications Comparison (Rubber track)

Kubota

Komatsu

Yanmar

Item

U15-3

U17-3Îą

PC18MR-2

Universal Vio17

Weight Engine (Sales catalog value)

rubber/steel

1600/1670

1650/1710

1640/1710

1620/1680

D782-EBH

D902-BH-1

3D67E-1

3TNV70

kW (PS)

9.6 (13)

11.8 (16)

11.2 (15.2)

10.1 (13.7)

rpm

2300

2600

2200

Model Output RPM

990-1240

980-1300

950-1280

Bucket

kN (kgf)

15.2 (1550)

15.9 (1620)

15.2 (1550)

Arm

kN (kgf)

8.5 (865)

9.9 (1000)

8.5 (870)

Max. digging height

3540

3615

3690

Max. dumping height

2440

2610

2630

Max. digging depth

2310

2160

2200

Max. vertical digging depth

1910

1785

1850

Max. digging reach @ground level

3840

3935

3710

Low/high (measured)

10.7/5.3

14.7/7.7

8.8/8.2

Low/high (theoretical)

12.9/6.5

14.2/7.1

Digital panel

Yes

Anti-theft system (EU)

Yes

Track roller

Inner

Outer

Inner

Outer

Short pitched rubber track

Long

Yes

Long

Yes

Overall width Max. digging force

Traction force

Protected travel hoses

I-S-34

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

II. MACHINE BODY Mechanism Section A. MACHINE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-M-3 a. b. c. d.

Major Dimensions and Working Range (with Rubber Crawler) . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U17-3α vs U17/U17-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

II-M-3 II-M-5 II-M-7 II-M-8

B. MACHINE BODY STRUCTURE AND FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . II-M-9 a. Overall Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-M-9 b. Under Carriage Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-M-15

II-M-1

WSM U17-3Î±/U17-3/U17 Mechanism

II. MACHINE BODY

II-M-2

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

A. MACHINE SPECIFICATIONS a. Major Dimensions and Working Range (with Rubber Crawler) α 1. Specifications for the U17-3α: EU-version

KUBOTA Excavator U17-3α Canopy

Model name Type (rubber crawler) Operating weight Bucket

Engine

(without driver)

Volume Width Type Model name Displacement Engine performance DIN 70020 Rated speed Swivel speed (swivel frame)

m³ mm

cm³

0,04 400 3 cylinder diesel engine, water-cooled KUBOTA D902-BH-1 898

11,6

1/min

2300

1/min

9,1

fast km/h slow km/h

Vehicle speed Performance

1650

4,1 2,1

Ground pressure (without driver) Climbing performance

kPa (kgf/cm²) % (degree)

Max. lateral sway

% (degree)

27 (15)

mm rad (degree) rad (degree)

990 x 260; 1240 x 260 1,13 (65) 1,01 (58)

Dozer (width x height) Swing angle Left of the boom Right Max. volume (theoretical) Service port connector Max. pressure Volume of the fuel reservoir Pulling capacity of the tow lug Tongue load at the tow lug LpA Noise level LwA Vibration at the drive lever Vibration at the control lever Vibration at the driver's seat Vibration at the bottom plate

L/min MPa (kgf/cm²) L N N dB (A) (2000/14/EC) dB (A) m/s² m/s² m/s² m/s²

II-M-3

26 (0,26) 58 (30)

27 18,6 190 19 32300 2700 79 92 < 3,0 < 4,5 < 0,5 < 0,9

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

2. Specifications for the U17/U17-3: PP-version KUBOTA EXCAVATOR Model name

U17/U17-3

Type

Canopy

Operating weight (including operator's)

3704 (1680)

lbs.(kg)

Water cooled 4 cycle diesel engine with 3 cylinder

Type

KUBOTA D902

Model name Engine

Total displacement cc (cu.in) Engine power SAE gross

rpm

2300

Unit swing speed

rpm

9.1

Performance

Dozer Boom swing angle

Fuel tank capacity

12.7 (17.0)

kW(Hp)

Rated speed

Travel speed

Pressure connection for attachments

898 (54.8)

Fast

mph (km/h)

1.4 (2.1)

Slow

mph (km/h)

2.6 (4.1)

Ground pressure (With operator)

psi (kPa) [kgf/cm2]

3.7 26 [0.26]

Climbing angle

%(deg)

58 (30)

Width X Height

in.(mm)

39.0/48.8 X 10.2 (990/1240 X 260)

Left

deg (rad)

65 (1.13)

Right

deg (rad)

58 (1.01)

Max. displacement (Theoretical) US gal (L)/min

7.13 (27)

Max. pressure

psi (MPa) [kgf/cm2]

2702 (18.6) [190]

US gal (L)

5.0 (19)

NOTE: Above dimensions are based on the machine with rubber trucks and JPN bucket. JPN = made in Japan Speciﬁcations subject to change without notice. ∗ With unloaded digging bucket. ∗ Firm compacted soil. ∗ Operators must exercise extra caution and follow instructions in the operator's manual. ∗ Worse condition or heavier attachment to the above will decrease climbing angle.

II-M-4

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

b. Dimensions α

1. U17-3α: EU-version

All dimensions in mm A

510

385

990/ 1240

620

990

990/ 1240

3540

2440

2310

1910

1440

2340

2630

280

190

2750

795

3545

3840

3900

II-M-5

WSM U17-3Î±/U17-3/U17 Mechanism

II. MACHINE BODY

2. U17/U17-3: PP-version

in. (mm) A

39/ 39/ 20.08 15.2 48.8 24.4 39.0 48.8 139.0 96.1 90.9 75.2 56.7 92.1 11.0 7.5 108.3 31.3 139.6 151.2 153.5 (510) (385) 990/ (620) (990) 990/ (3540) (2440) (2310) (1910) (1440) (2340) (280) (190) (2750) (795) (3545) (3840) (3900) 1240 1240

( )

II-M-6

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

c. Main Specifications model Brand Type Engine

Output Displacement

Machine weight Standard capacity

bucket

heaped

U17-3α

U17/U17-3

KUBOTA

D902-BH-1

D902-E3-BH-2

PS/rpm

16.7/2300

16.3/2300

kW/rpm

12.3/2300

12.0/2300

898 (54.8)

←

kg (lbs)

1650 (3638)

←

m3 (ft3)

0.04 (1.34)

cm (in )

Remarks

CECE

Maximum digging force, arm

KN (kgf) lbf

8.8 (900) 1984.1

Teeth bottom

Maximum digging force, bucket

KN (kgf) lbf

15.2 (1550) 3417.2

Teeth bottom

Cycle time

sec/cycle

Digging performance

m3/h (ft3/h)

Dozer capacity

m3 (ft3)

Relief pressure Hydraulic pump P1, P2 Pump discharge rate

MPa (kg/cm2) psi

21.6 (220) 3129

←

L/min (USGPM)

16.6 (4.39)

←

18.6 (190) 2702

←

10.4 (2.75)

←

Relief pressure P3 Pump discharge rate

MPa

(kg/cm2)

without extention blade

psi

L/min (USGPM)

Digging performance, cycle time conditions: Dig 1 m depth with Standard bucket and dump soil on the ground after 45° swivel.

II-M-7

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

d. U17-3α vs U17/U17-3 1. Comparison between EU and PP-version Items

U17-3α (EU-version)

U17/U17-3 (PP-version)

1. Variable track

{

2. Rops / Fops canopy

{

3. Cab

4. Boom cylinder in upper location

{

5. Anti-theft system

{

6. TPSS (Two pattern selection system)

{

7. Travel high speed switch on the dozer lever

{

8. Service port flow confluence, P2 + P3

{

9. Wrist type pilot control lever

{

10. LCD meter

{

11. High lift half suspension seat and seat belt

{

12. Front hydraulic hoses shoe-in type

{

13. Travel alarm

{ (Option), KTA (STD)

14. Accel lever

Pull-type

Push-type

15. Engine type

D902-BH-1

D902-E3-BH-2

16. Fan petal

17. Accumulator

{

18. Service port, third line

{

19. Travel safety system (Main spool unload method)

{

II-M-8

WSM U17-3Î±/U17-3/U17 Mechanism

II. MACHINE BODY

B. MACHINE BODY STRUCTURE AND FUNCTION a. Overall Arrangement (7)

(1)

(8) (16)

(9)

(2)

(10)

(11)

(12) (3) (4) (13)

(14)

(5)

(6)

(15)

Vertical Operation (1)

Service port pedal

(9)

Fuel tank

(2)

Control valve

(10) Swivel motor

(3)

Oil cooler

(11) Swivel joint

(4)

Battery

(12) Oil tank

(5)

Radiator

(13) Unloading valve

(6)

Suction pipe

(14) Pump

(7)

Swing pedal

(15) Engine

(8)

Selector valve

(16) Travel hi-low pedal (Japan)

Note: For the export model, the travel Hi-Low control switch is located on the dozer lever grip.

II-M-9

WSM U17-3Îą/U17-3/U17 Mechanism

II. MACHINE BODY

1. Arrangement of control levers

(1)

Left control console

(2)

Drive levers and control pedals

(3) Right control console (4)

Driver's seat

(11) Track width change/dozer select lever

II-M-10

WSM U17-3Îą/U17-3/U17 Mechanism

II. MACHINE BODY

(1) (2) (3) (4)

(1) Right control lever (2) Horn switch (3) Arm rest (4) Travel speed button (5) Dozer control lever (6) Throttle lever (7) Starter switch (8) Travel speed indicator (9) Rotary beacon button (10) Display

(6)

Working light switch

Adoption of Meters Hour meter, oil level gauge and Easy checker (oil lamp, charge lamp, glow lamp and fuel level alarm lamp) for various indications.

II-M-11

Warning light Display screen Display selector switch Working light button

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

Direction of accel lever: EU-version

PP-version

(Machine front)

(1)

Throttle lever

(A) “FAST“ (B) “SLOW“

(1)

(2)

(4)

(5) (3) (1)

Hood Left

(4)

Oil cooler

(2)

Hood Rear

(5)

Radiator

(3)

Wing nut

The oil cooler and the radiator can be checked and cleaned by opening the left hood. Engine oil can be refilled by opening the inspection door after lifting up the seat. (1)

(1) Oil filler port

II-M-12

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

(2)

(1)

(3) (1) (3)

(4)

(2)

(1)

(5)

(6)

Water separator

(2)

Fuel filter

(3)

Air cleaner

(4)

Reserve tank

• Adoption of fuel level gauge makes it possible to check the remaining oil amount. • A gauge is mounted at the side of the fuel filler port. When fuel is nearly filled up, the pointer of the gauge starts moving and about 2 liters of fuel oil is filled up. • A hydraulic oil filler port is provided also at the side of the fuel filler port. (2) (3)

(4) (5) (6)

(1)

Fuel filter cartridge

(2)

Water separator

(3)

Water separator handle

(4)

Indication line

(5)

Float (Red)

(6)

Cup

(7)

Retainer ring

(7)

Like in the models of KX91-3Sα and KX121-3Sα Series, the fuel filter has been separated from the water separator.

II-M-13

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

2. Swing bracket (7)

(11)

(12) (8) (9)

(10)

(1)

Swing bracket

(2) ~ (6) Bushing (7)

After installing the bush, pin of φ34.9 (φ1.374) goes through smoothy.

(8)

Dimension before bushing.

(9)

Side of the bush (3) should flash the face.

(10)

After installing the bush, pin of φ34.9 (φ1.374) goes through smoothy.

(11)

Side of the bush (2) should behind the surface.

(12)

After installing the bush, pin of φ49.95 (φ1.967) goes through smoothy. (1)

(4)

(1)

Bushing end to be fitted to boss end

(2)

Bush (506040)

(3)

Bush (506040)

(4)

Bushing end to be fitted to boss end

II-M-14

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

b. Under Carriage Components 1. Swivel bearing ( ) : in (φ18.03) (P.C.D 17.24)

(4)

(φ15.75)

(0.197)

(1)

(0.0197)

(1.18)

(1.378)

(2)

(3)

(φ12.58)

(P.C.D 12.93) (φ13.46) (P.C.D 14.25) (φ15.75)

(1) Seal B (2) S-mark (3) Seal A (4) Rp 1/8, for grease nipple

Apply the nylon plug in position.

1) Number of teeth = 73 Details of the grease fitting 2) Backlash = 0.05 ~ 0.35 mm (0.002 ~ 0.014 inch) 3) P.C.D. = φ 328.5 4) Induction-harden the inner and outer ring raceways as well as the tooth flank and bottom. Raceway surface hardness: 50 ~ 60 HRC Tooth flank and bottom surface hardness: 52 ~ 60 HRC Machine front (See the Gear Specifications for gear hardening details.) 5) Inner ring’s “S” marking and outer ring’s stopper on the soft zone. When installing the bearing, position the soft zone where there is the least load. 6) Radial clearance (Measuring load) (0.03 ~ 0.25) Axial clearance (Measuring load) (0.03 ~ 0.15) II-M-15

Plug outer soft zone

Inner soft zone S - mark

WSM U17-3Îą/U17-3/U17 Mechanism

II. MACHINE BODY

2. Track frame (adjustment of play) 1

4 5

(1)

2 A B (2)

(1) Stopper bolt 4 Apply screw adhesive to their threads. 4 locations in total (2) Track frame, right and left, 4 locations in total Apply grease over the hatched (///////) surfaces.

Magnified view of adjusting portion

(0.177) or less (0.748) (0.354)

No.

Part Name

(Set bolt)

(1.339)

Q'ty

(1)

Set bolt (RA221-21161)

(2)

Nut

Play adjusting procedure 1. Tighten the play adjusting setbolts until they reach the left and right sides of the frame. 2. Loosen the play adjusting setbolts by 1/4 turns when they have reached the frame. 3. Lock the adjusting setbolts by nuts.

II-M-16

WSM U17-3Îą/U17-3/U17 Mechanism

II. MACHINE BODY

3. Structure of track roller

(1)

(2) (1) Make sure the plug's end face does not stretch out of the shaft. (2) Make sure the shaft stretches more than 0.1 mm at both ends.

No.

Part Name

Track roller subassembly

Roller: A

Roller: B

Color: A

Color: B

Shaft

Ring stopper

Bushing

Seal: Group

10 O-ring 11 Hex socket plug

Notes: 1. Fill the bearing with oil (40 cm3 (2.44 in3)). 2. Use Engine genuine oil SAE30 class CD or equivalent. 3. Use care not to confuse the sides of the shaft circlip. (Rolled-over side to be fitted in the groove is inner side, while the burred (sharp) side is the outer side) 4. The roller should be turned smoothly after it has been assembled completely. 5. Dimensions of assembling jigs for seal etc. and the assembling procedure are equivalent to those of RA211-2170Î&#x201D;.

II-M-17

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

4. Tension Device 1) Rubber track

1 No.

Part No.

RA231-2130Δ

Idler assembly

2 3

Part Name

Remarks

RA231-2150Δ

Cylinder assembly (left)

Track (left)

RA231-2160Δ

Cylinder assembly (right)

Track (right)

RA231-2155Δ

Grease fitting (grease cylinder)

In the case of rubber crawler, position it so that the joint marking (

) comes at the top center (see below).

(4)

10 ~ 15 mm

(4) Joint

Q'ty

10 ~ 15 mm (0.39 ~ 0.59 in.)

II-M-18

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

2) Iron track

(8) 1

No. Part No. Part Name Q'ty Remarks 1 RA231-2340Δ Idler assembly 2 Specific for iron crawler 2 RA231-2150Δ Cylinder assembly (left) 1 For track (left) RA231-2160Δ Cylinder assembly (right) 1 For track (right) 3 RC101-2155Δ Grease fitting (grease cylinder) 2 4 RA231-2112Δ Frame, track (left) 1 RA231-2113Δ Frame, track (right) 1

(8) Cast line provided on the side to identify apart from the idler assembly (RB237-2130Δ).

In the case of iron crawler type, fit the guide plate and sliding plate in position.

(9) No. Part No. Part Name 5 RA231-2318Δ Guide 6 01133-61030 Bolt 7 90545-11341 Plug

Q'ty Remarks 4 Specific for iron crawler, 2 pcs. each for left and right 12 4

Adjusting the crawler tension

25 ~ 30 mm 25 ~ 30 mm (0.98 ~ 1.18 in.)

II-M-19

(9) Attention to the fitting position of the sliding plate

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

5. Idler and tension spring, rubber track Rubber track

(17)

(18)

(19)

(1) Support 1

(5) Floating seal

(9) Wire

(13) Retainer

(2) Support 2

(6) Bushing

(10) Plug, R 1/8

(14) Nut

(3) shaft

(7) O-ring

(11) Yoke

(15) Split pin

(4) Idler

(8) Spring pin

(12) Spring

(16) Bolt

(17) This angle indicates the tilt between the yoke K and spring retainer M. (18) Spring's preset length (19) Spring bottom not to stretch out of the line A

1) Pre-set length of spring: L=130 mm (5.12 inch) 2) Bolt(16) tightening torque: 77.5 ~ 90.2 N·m (7.9 ~ 9.2 kgf·m) (57.16 ~ 66.53 ft·lbf) Apply screw lock agent. (Locktite 271). 3) Lub oil: Engine oil SAE30 CD. 30cc (1.83 in3)

(Spring roll pin direction)

II-M-20

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

Iron track

(1)

(2) (1) Spring's preset length: 137.5 mm (5.41 in.) (2) Spring bottom not to stretch out of the line A Idler assy mounting bolt M12 x 1.25, L = 45 Tightening torque: 77.5 ~ 90.2 N·m (7.9 ~ 9.2 kgf·m) 57.2 ~ 66.5 ft·lbs Apply screw lock agent (Locktite 271)

II-M-21

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

6. Rubber track

Rubber crawler's peripheral length: 48P x 70L = 3360 ± 10

Spec items

U17-3α, U17/U17-3

Type

230 x 35 x 96

Lug height

18.0 mm (0.906 in)

Iron core pitch

48 mm (3.780 in)

Circunference

3360 ± 10 mm (132.283 in)

Number of steel cords

48 ± 4 (1.890 in)

Steel cords lap length

260 mm (10.236 in)

Steel cords strength

3.92 KN (400 kgf) or more (882 lbf)

Thickness of crawler main part

23.0 mm (0.906 in)

Ditto joint parts

26.5 mm (1.043 in)

Core metal

FCD450 (Equiv.)

Number of core metal (Links)

Sprocket specifications Reference pitch Reference number of teeth P.C.D. (Pitch circle diameter) Sprocket pitch Sprocket number of teeth

90 -00.5 9.5 277.18 -02.5 45.62 19

Outer diameter

286 -02.5

Roller diameter

II-M-22

WSM U17-3α/U17-3/U17 Mechanism

II. MACHINE BODY

7. Steel track shoe RA231-2250-1 (230-37)

( ) : in

(0.87)

(1.65)

(1.73)

(0.55)

(Bushing) (Link) (Pin)

(9.06)

Over 25(0.98) (when assembled)

(5.91)

(0.63)

(3.03) (2.91) (2.28) (1.02)

(0.63)

(0.87)

(Link) (Bushing)

(3.54)

(0.91)

(2.20) (0.65)

(0.22)

(0.87)

(3.07)

(3.54)

(Inside) (Outside)

(Common for both ends)

Rubber pad (3.54)

(3.54)

(0.22)

(1.44)

(1.56)

(0.91)

(3.86)

(2.20)

(3.54)

(Inside) (Outside)

Tighten hex nuts to torque of 70 ~ 100 N·m (51.6 ~ 73.8 ft·lbf) 7.14 ~ 10.2 kgf·m. II-M-23

(Common for both ends)

WSM U17-3Î±/U17-3/U17 Mechanism

II. MACHINE BODY

II-M-24

WSM U17-3Î±/U17-3/U17 Service

II. MACHINE BODY

II. MACHINE BODY Service Section A. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-3 a. b. c. d. e.

Machine Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lever Stroke and Operating Force . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quality Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

II-S-3 II-S-3 II-S-4 II-S-5 II-S-14

B. FRONT ATTACHMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-25 a. Pin, Bush and Shim Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-25 b. Instruction to Press in the Bushing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-29 c. Greasing Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-34

C. UPPER STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-39 a. b. c. d. f. g. h. i. j. k. l. m.

Swivel Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Travel Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accelerator Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dozer Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Swing Pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Port Pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pilot Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Limit Switch Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Seat and Seat Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wrist Rest. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Canopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

II-S-39 II-S-40 II-S-43 II-S-48 II-S-52 II-S-54 II-S-55 II-S-58 II-S-59 II-S-60 II-S-61 II-S-63

D. UNDERCARRIGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-65 a. Track Tension Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-65 b. Track Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-68

II-S-1

WSM U17-3Î±/U17-3/U17 Service

II. MACHINE BODY

II-S-2

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

A. SPECIFICATIONS a. Machine Weight Iron crawler isn’t available for these models.

(1) KE, KDG, KUK-version

Canopy

Unit

U17-3α

STD arm / Rubber

1650

STD arm / Iron

1720

Unit

U17/U17-3

Rubber track

kgf (lbs)

1680 (3704)

Iron track

kgf (lbs)

1750 (3858)

(2) PP (KTC, KCL, KTA)-version

4 post Rops

Long arm is installed in standard version.

b. Main Specifications model

Engine

Excavating capacity Hydraulic pump P1, P2 P3

U17/U17-3 (PP)

Brand

KUBOTA

Type

D902-BH-1

D902-E3-BH-2

PS/rpm

16.7/2300

16.3/2300

kW/rpm

12.3/2300

12.0/2300

898

898 (47.5)

1650 (3638)

1680 (3704)

Output

Machine weight

U17-3α (EU)

(in3)

Displacement

Rubber track

kg (lbs)

Bucket

kN (kgf) lbf

15.2 (1550) 3147

←

Arm

kN (kgf) lbf

8.8 (900) 1978

←

Relief pressure

MPa (kg/cm2) psi

21.6 (220) 3129

←

Pump discharge rate

L/min (US GPM)

17.3 (4.57)

←

Relief pressure

MPa (kg/cm2) psi

18.6 (190) 2702

←

Pump discharge rate

L/min (US GPM)

10.4 (2.75)

←

II-S-3

WSM U17-3Îą/U17-3/U17 Service

II. MACHINE BODY

c. Lever Stroke and Operating Force Reference on new vehicle Unit

U17/U17-3, U17-3Îą

mm (in)

72 (2.83)

N (kgf) lbf

13.7 (1.4) 3.1

mm (in) mm (in)

2> = (0.079 > =) 72 (2.83)

Measured at the grip end

N (kgf) lbf

13.7 (1.4) 3.1

Measured 20 mm below the grip end

Play

mm (in)

Stroke

mm (in)

2> = (0.079 > =) 74 (2.91)

Measured at the grip end

Stroke Boom lever

Operating force Play Stroke

Arm lever

Operating force

Measured at the grip end Measured 20 mm below the grip end

N (kgf) lbf

13.7 (1.4) 3.1

Measured 20 mm below the grip end

Play

mm (in)

Stroke

mm (in)

2> = (0.079 > =) 74 (2.91)

Measured at the grip end

N (kgf) lbf

13.7 (1.4) 3.1

Measured 20 mm below the grip end

mm (in) mm (in)

2> = (0.079 > =) 75 (2.95)

Measured at the grip end

N (kgf) lbf

15.0 (1.5) 3.3

Measured 20 mm below the grip end

Clearance LH/RH lever at neutral position.

mm (in)

5 (0.197)

Longitudinal direction

Clearance LH/RH lever at most forward and backward position.

mm (in)

10 (0.394)

Longitudinal direction

Clearance LH/RH lever

mm (in)

2 ~ 5 (0.079 ~ 0.197)

N (kgf) lbf

33.3 (3.4) 7.5

mm (in)

80 (3.15)

Operating force

N (kgf) lbf

30.4 (3.1) 6.8

Lock lever, up

Operating force

N (kgf) lbf

19.6 (2.0) 4.4

Lock lever, down

Operating force

N (kgf) lbf

29.4 (3.0) 6.6

Swing pedal

Operating force

N (kgf) lbf

98.0 (10.0) 22.0

Travel high SW

Operating force

N (kgf) lbf

Bucket lever

Swivel lever

Operating force

Remarks

Operating force Play Stroke Operating force

Travel lever

Acceleration lever Dozer lever

Operating force Stroke

II-S-4

Lateral direction Measured 30 mm below the grip top Measured at the grip end Measured 20 mm below the grip end

Measured at the grip end Electric switch

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

d. Dimensions of Parts (1) Front pins and bush [Unit: mm (in)]

Location No.

Pin diameter x length

Bush inner dia. x outer dia. x length

(1)

φ35 x 257 (φ1.38 x 10.12)

φ35 x φ45 x 45 (φ1.38 x φ1.77 x1.77)

(2)

φ35 x 160 (φ1.38 x 6.30)

φ35 x φ45 x 35, 44 (φ1.38 x φ1.77 x1.38, 1.73)

(3)

φ35 x 160 (φ1.38 x 6.30)

φ35 x φ45 x 45 (φ1.38 x φ1.77 x1.77)

(4)

φ30 x 112.5 (φ1.38 x 4.43)

φ30 x φ40 x 35 (φ1.18 x φ1.57 x1.38)

(5)

φ30 x 96 (φ1.38 x 3.78)

φ30 x φ40 x 35 (φ1.18 x φ1.57 x1.38)

(6)

φ50 x 109 (φ1.38 x 4.29)

φ50 x φ60 x 37, 28, 40 (φ1.97 x φ2.36 x1.46, 1.10, 1.57)

(7)

φ50 x 109 (φ1.38 x 4.29)

φ50 x φ60 x 37, 28, 40 (φ1.97 x φ2.36 x1.46, 1.10, 1.57)

(8)

φ30 x 160 (φ1.38 x 6.30)

φ30 x φ40 x 35 (φ1.18 x φ1.57 x1.38)

(9)

φ30 x 142 (φ1.38 x 5.59)

φ30 x φ40 x 35 (φ1.18 x φ1.57 x1.38)

(10)

φ30 x 191 (φ1.38 x 7.52)

φ30 x φ38 x 35 (φ1.18 x φ1.50 x1.38)

(11)

φ30 x 142 (φ1.38 x 5.59)

φ30 x φ40 x 45 (φ1.18 x φ1.57 x1.77)

(12)

φ30 x 192.5 (φ1.38 x 7.58)

φ30 x φ40 x 35 (φ1.18 x φ1.57 x1.38)

(13)

φ30 x 192.5 (φ1.38 x 7.58)

φ30 x φ38 x 35 (φ1.18 x φ1.50 x1.38)

(14)

φ30 x 182 (φ1.38 x 7.17)

φ30 x φ38 x 35 (φ1.18 x φ1.50 x1.38)

(15)

φ30 x 182 (φ1.38 x 7.17)

φ30 x φ38 x 35 (φ1.18 x φ1.50 x1.38)

The working limits of the pins are 1.0 shorter than the reference on new vehicle.

Outside diameter

Length Outside diameter

Length

(New pin and bush tolerance) -0.05 -0.05 -0.05 pin:φ25 --0.05 0.08 , φ30 -0.07 , φ35 -0.07 , φ50 -0.07 +0.130 +0.130 +0.090 bush:Inner dia.φ25 +0.100 , φ30 +0.100 , φ35 +0.130 +0.100 , φ50 +0.060 +0.070 +0.100 +0.100 +0.100 Outer dia.φ38 +0.040 , φ40 +0.070 , φ45 +0.070 , φ60 +0.070

[Unit: mm]

-0.002 -0.002 -0.002 pin:φ0.98 --0.002 0.003 , φ1.18 -0.003 , φ1.38 -0.003 , φ1.97 -0.003 +0.005 +0.005 +0.004 bush:Inner dia.φ0.98 +0.004 , φ1.18 +0.004 , φ1.38 +0.005 +0.004 , φ1.97 +0.002 +0.003 +0.003 +0.003 +0.003 Outer dia.φ1.50 +0.002 , φ1.57 +0.002 , φ1.77 +0.002 , φ2.36 +0.002

II-S-5

[Unit: in]

Remarks

WSM U17-3Îą/U17-3/U17 Service

II. MACHINE BODY

(2) Bucket fixture dimensions Unit

U17-3Îą, U17/U17-3

mm (in)

45.3 (1.78)

mm (in)

2 x M12 x 1.25

mm (in)

45.3 (1.78)

mm (in)

45.3 (1.78)

mm (in)

16.5 (0.65)

mm (in)

3.95 (0.16)

mm (in)

865 (34.06)

mm (in)

2 (0.08)

mm (in)

180 (7.09)

mm (in)

167.5 (6.59)

mm (in)

104.5 (4.11)

mm (in)

735 (28.94)

mm (in)

173 (6.81)

mm (in)

175 (6.89)

mm (in)

85 (3.35)

Remarks

II-S-6

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(3) Bucket link pin

[Unit: mm (in)] Parts name

Specifications

(1)

Bucket link 1

φ30 x 95.5 (φ1.18 x 3.76)

(2)

Bush A

φ30 x φ38 x W35 (φ1.18 x φ1.50 x W1.38)

(3)

Pin A dia

φ30 x 192.5 (φ1.18 x 7.58)

(5)

Bucket link 2, 3

φ30 - φ30 (φ1.18 - φ1.18)

(6)

Arm boss

φ55 x φ38 x L125.5 (φ2.17 x φ1.50 x L4.94)

(7)

Bush B

φ30 x φ38 x W35 (φ1.18 x φ1.50 x W1.38)

(8)

Pin B dia

φ30 x 192.5 (φ1.18 x 7.58)

(10)

Bucket cylinder L/S (stroke)

529 / 802 (269) (20.83 / 31.57 (10.59))

II-S-7

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(4) Track roller (A) Reference on new vehicle (B) Allowable limit Unit

U17/U17-3, U17-3α

(a) Guide diameter

(A)/(B)

φ73/69 (2.87/2.72)

(b) Outside diameter

(A)/(B)

φ117/113 (4.61/4.45)

(A)/(B)

135 (5.31)

(d) Roller guide width

(A)/(B)

66 (2.60)

(e) Slide plate

(A)/(B)

9/4 (0.35/0.16)

(c)

Remarks

Slide plate

(d)

(e)

(b) (a)

II-S-8

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(5) Idler and sprocket (A) Reference on new vehicle (B) Allowable limit Unit

U17-3α, U17/U17-3

Remarks

202/196 (7.95/7.72)

Rubber Crawler

196/190 (7.72/7.48)

Steel Crawler

Idler (a) Outside diameter

(A)/(B)

mm (in)

(b) Guide width

(A)/(B)

mm (in)

27/23 (1.06/0.91)

(A)/(B)

mm (in)

60/55 (2.36/2.17)

Sprocket (d) Outside diameter

(A)/(B)

mm (in)

290/284 (11.42/11.18)

Sprocket (e) Wheel width

(A)/(B)

mm (in)

23/18 (0.91/0.71)

(c)

(e)

(a) (d)

(b)

II-S-9

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(6)Dozer Unit

U17-3α, U17/U17-3

Remarks

(1)

Pin outside dia. - Length

mm (in)

φ30-102.5 (φ1.18-4.04)

(2)

Outside diameter - Length

mm (in)

φ30-84.5 (φ1.18-3.33)

(3)

Outside diameter - Length

mm (in)

φ30-84.5 (φ1.18-3.33)

(4)

Outside diameter - Length

mm (in)

φ30-95 (φ1.18-3.74)

Track cylinder mounting pin

(5)

Outside diameter - Length

mm (in)

φ25-133 (φ0.98-5.24)

Extension blade mounting pin

Width

mm (in)

1244/990 (48.98/38.98)

Height

mm (in)

261 (10.28)

Length

mm (in)

710 (27.95)

Tip wear thickness

mm (in)

t 9 (t0.35)

Distance between supports

mm (in)

434 (17.09)

Movement above ground/below ground

mm (in)

263/182 (10.35/7.17)

Dozer capacity

3 (ft3)

0.067 (2.25)

II-S-10

w/o Extension blade

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(7) Bucket dimensions Unit

U17-3α, U17/U17-3

(1)

mm (in)

400 (15.75)

Lip outside width

(2)

mm (in)

456 (17.95)

Side cutter outside width

(3)

mm (in)

60.5 x 6 (2.38)

(4)

mm (in)

139.5 (5.49)

(5)

mm (in)

95.5 (3.76)

(6)

mm (in)

16 (0.63)

(7)

mm (in)

22 (0.87)

(8)

mm (in)

47.75 (1.88)

(9)

mm (in)

φ49 (1.93)

(10)

mm (in)

φ60 (2.63)

(11)

mm (in)

φ30 (1.18)

(12)

mm (in)

φ30 (1.18)

(13)

mm (in)

457 (17.99)

(14)

mm (in)

380.5 (14.98)

(15)

mm (in)

φ48.5 (1.91)

(16)

mm (in)

126.5 (4.98)

(17)

mm (in)

88.5 (3.48)

(18)

mm (in)

16.5 (0.65)

Remarks

φxt Arm end width

II-S-11

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(8) Parts weight * The weights in the table below are approximate. Unit

U17-3α, U17/U17-3

kg (lbs)

1650 (3638), 1680 (3704)

Body weight

kg (lbs)

1340 (3527)

Maximum breaker weight

kg (lbs)

90 (198)

Backhoe overall

kg (lbs)

177 (390)

Swing bracket and boom cylinder not included

Upper swivel structure

kg (lbs)

816 (1799)

Canopy/cabin

Lower travel structure

kg (lbs)

577 (1272)

Rubber crawler

Track frame

kg (lbs)

61/83/61 (135/183/135)

Left/center/right

Swivel frame

kg (lbs)

150 (331)

Machine weight

Swing bracket

kg (lbs)

28 (62)

Boom

kg (lbs)

67 (148)

Arm

kg (lbs)

30 (66)

Bucket

kg (lbs)

29 (64), 40 (88)

Remarks Rubber track

450-400

Dozer

kg (lbs)

67 (148)

Counterweight

kg (lbs)

205 (452)

Iron crawler

kg (lbs)

89 (196)

Rubber crawler

kg (lbs)

56 (124)

Unit

U17-3α, U17/U17-3

Engine

kg (lbs)

64 (141)

Dry weight

Hydraulic tank

kg (lbs)

13 (29)

With filter

Fuel tank

kg (lbs)

1.6 (3.5)

Swivel bearing

kg (lbs)

17 (38)

Battery

kg (lbs)

13 (29)

Track roller

kg (lbs)

4 (8.8)

Upper track roller

kg (lbs)

Sprocket

kg (lbs)

5 (11.0)

Idler

kg (lbs)

18 (40)

Canopy roof

kg (lbs)

9 (20)

Post (support)

kg (lbs)

21 (46)

Pump assembly

kg (lbs)

14 (31)

Wheel motor

kg (lbs)

17 (38)

Swivel motor

kg (lbs)

15,(33)

Control valve

kg (lbs)

14 (31)

Boom cylinder

kg (lbs)

15 (33)

Arm cylinder

kg (lbs)

12 (27)

Bucket cylinder

kg (lbs)

11 (24)

Swing cylinder

kg (lbs)

9 (20)

Dozer cylinder

kg (lbs)

7 (15)

Rotary joint

kg (lbs)

13 (29)

Radiator

kg (lbs)

2 (4.4)

II-S-12

Remarks

Sprocket included

Without joint

Offset

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(9) Water and Oil Quantity Unit

U17-3α, U17/U17-3

Radiator soft water

L (US gal)

2.6 (0.713)

Reserve tank soft water

L (US gal)

0.56 (0.159)

Crankcase engine oil (at filter replacement)

L (US gal)

3.6 (0.295)

Class CF/CF-4 10W30

Hydraulic tank oil

L (US gal)

13 (3.434)

ISO VG 46

Total hydraulic oil

L (US gal)

21 (5.812)

ISO VG 46

Wheel motor gear oil

L (US gal)

0.25 (0.066)

Swivel reduction gear oil

L (US gal)

Track roller gear oil

cc (cu-in)

40 (2.44)

Carrier roller (upper roller)

cc (cu-in)

- (-)

Front idler

cc (cu-in)

30 (1.83)

Engine Oil SAE 30 Class CD

Fuel tank light oil (full)

L (US gal)

19 (4.755)

Diesel fuel No. 3

II-S-13

Remarks Kubota LLC-N-50F

SAE 90 (API, GL-4) Engine Oil SAE 30 Class CD Grease EP2

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

e. Quality Specifications (Installation: Rubber track, standard arm and bucket.) No Q1 1 1

Specifications Items Main Speed JIS A8404 Machine size Total length (Transport)

Total width

Total height (Canopy)

Total height (Cabin)

Weight

Machine weight (Canopy)

Machine weight (Cabin)

Ground contact press. (Canopy)

Ground contact press. (Cabin)

1 2

Performance

Swivel speed Travel speed F1

6 1

Gradeability Rear end min. turning radius

Swivel frame rear ground clearance

Tumbler center distance

Crawler total length

Crawler total width

Crawler shoe width

Min. ground clearance

Unit

U17-3α (EU) / U17/U17-3 (PP)

mm inch mm inch mm inch mm inch kg lbs kg lbs kPa psi kgf/cm2 kPa psi kgf/cm2 rpm km/h mph km/h mph km/h mph km/h mph deg. mm inch mm inch mm inch mm inch mm inch mm inch mm inch

II-S-14

3570 ± 102.4 ± 1240 / 990 ± 48.8 / 39.0 ± 2300 ± 90.6 ± 1600 ± 3527.4 ± 27.73 4.02 0.28

Remarks

52 2.05 12 0.5 23 0.9

32 70.5

Fuel tank full

0.9 0.2 0.12 0.4 0.25 0.2 0.12 0.4 0.25

Rated engine RPM, η = 100%

9.1 2.1 1.31 4.1 2.55 2.1 1.31 4.1 2.55 30 620 24.4 422 16.6 1230 48.4 1587 62.5 1240 / 990 48.8 / 39.0 230 9.1 150 5.9

± ± ± ± ± ± ± ± ± < ± ± ± ± ± ± ± ± ± ± ± ± ± ±

12 0.5 8 0.3 37 1.5 48 1.9 26 1.0 5 0.2 4 0.2

WSM U17-3α/U17-3/U17 Service

No 5

Specifications Items Engine

Rated output

3 4

Rated speed Displacement

Hydraulic pump type Pump delivery P1,P2 P3 P4

Main relief pressure (Bench set)

P1,P2

7 8

1 1 2 3 1 2

Main relief pressure (Bench set)

Unit

U17-3α (EU) / U17/U17-3 (PP)

Model name

1 2

II. MACHINE BODY

Swivel motor type Under carriage Travel motor type Parking brake type Crawler shoe type Front attachment Bucket CECE heaped capacity SAE, JIS

Bucket width

4 5 6

Swing angle L R Max. digging radius

Ground level Max. digging radius

Ground level Min. finish radius

Max. digging depth

kW ps rpm L cc US gal L US gal L US gal L US gal MPa

21.6

+1.0 -0.5

kgf/cm2

220

+10 -5

bar

216

+9.8 -4.9

psi

3128

+142 -71

MPa

18.6

+1.0 -0.5

kgf/cm2

190

+10 -5

bar

186

+9.8 -4.9

psi

2702

+142 -71

MPa

3.9

+0.3 -0.2

kgf/cm2

+3 -2

bar

+3 -2

psi

569

m3 yd3

Remarks

EU: D902-BH-1 PP: D902-E3-BH-2 11.6 ± 0.2 13.0 ± 0.3 2300 0.898 898 0.184 Variable x2 + gear 17.3 4.38 10.4 2.75 6.2 1.64

+43 -28

Piston motor Hi-Low type Rubber 0.04 ± 0.002 0.05 ± 0.003

m3 yd3 mm inch deg. deg. mm inch mm inch mm inch mm inch

II-S-15

0.04 ± 0.002 0.05 ± 0.003 456 18.0 63 58 3901 153.6 3843 151.3 1320 52.0 2306 90.8

± ± ± ± ± ± ± ± ± ± ± ±

10 0.4 2 2 59 2.3 58 2.3 26 1.0 46 1.8

Without side cutter

Bucket bottom horizontal

WSM U17-3α/U17-3/U17 Service

No 9

II. MACHINE BODY

Specifications Items

10 Front attachment Max. vertical digging depth 11

Max. digging height

Max. dump height

Max. dump height (Arm vertical)

Min. turning radius

Min. turning radius (Left swing)

Off-set amount

L R

Max. digging force

Optional JIS, SAE bucket range

10 1

Blade

Width

Height

Length

Max. lift above GL

Max. below GL

Displacement capacity

11 1

Water & oil

Radiator capacity

Reserve tank capacity

Engine crank case

Hydraulic oil Full (all amount)

Hydraulic oil Tank (tank gauge)

Wheel motor

Swivel reduction case

Track roller

Front idler

Unit

U17-3α (EU) / U17/U17-3 (PP)

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch kgf kN lbw

1911 ± 38 75.2 ± 1.5 3536 ± 71 139.2 ± 2.8 2443 ± 49 96.2 ± 1.9 1426 ± 43 56.1 ± 1.7 1207 ± 36 47.5 ± 1.4 510 ± 15 20.1 ± 0.6 385 ± 12 15.2 ± 0.5 1491, 1412< 14.6, 13.8< 3280, 3106<

m3 yd3 mm inch mm inch mm inch mm inch mm inch

1244 / 990 49.0 / 39.0 265 10.4 281 11.1 192 7.6

± ± ± ±

5 0.2 5 0.2

± ± ± ±

13 0.5 9 0.4

Remarks

m3 yd3 L US gal L US gal L US gal L US gal L US gal L US gal L US gal L US gal L US gal

II-S-16

3.6 0.95 0.56 0.15 3.6 0.95 21 5.55 13 3.43 0.25 0.07 0.04 0.01 0.03 0.01

With oil filter

WSM U17-3α/U17-3/U17 Service

Specifications Items

Unit

Fuel tank

L US gal

11 10 Water & oil Q2 1 1

II. MACHINE BODY

Main Specs JIS A8404 Bucket tooth sluggish

Decline of front attachment

Blade's declination

Eccentric amount from swing center

Distance to swing center

Distance to boom pin

Boom pin height

Min. clearance of bucket teeth to boom cylinder protector

Clearance of boom cylinder to shoe

1 2

Approach angle Distance to blade tip

Distance of crawler end to blade

Clearance of blade to weight

Crawler height

Max. crawler height

Clearance of swivel frame to crawler

Distance to idler center

Distance to sprocket center

Protrusion amount of upper frame to crawler outer end

Swivel frame height

Height to step

Height to seat

SIP (ISO)

L/R

U17-3α (EU) / U17/U17-3 (PP)

mm inch mm inch mm inch mm inch mm inch mm inch mm inch

73 2.87 0 0.00 0 0.00 -

inch

1.46

mm inch deg. mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

29.4 354 13.94 354 13.94

II-S-17

Remarks

17.5 ± 0.9 4.62 ± 0.24 ± ± ± ± ± ±

93 3.66 10 0.39 10 0.39 From swivel center

Exclude grouser +34 -16 +1.34 -0.63

± 3.0 From swivel center

± ± ± ±

7 0.28 7 0.28

Include grouser on the sprocket

From swivel center

Include rubber mat

WSM U17-3α/U17-3/U17 Service

No Q3 1 1

3 4 5 6

Specifications Items Engine performance Max. engine SAE J 1995 Gross torque

2 1 2 3 4 1

Torque rise Max. engine rpm no load 1 pump relief 2 pump relief 3 pump relief Idling rpm

1 1 2 1 2

Engine start time (Normal temp and grow) Cold start Cell start time Number of start Charge starting engine Charging voltage alternation & ampere Travelling performance Travel motor block performance, L/R

Q4 1 1 2

Max. Traction force

Travel straightness

Blade F1

Blade R1

Q5 1 1

Track shoe sag distance

Work performance Work amount 45 deg digging & side dump

Cycle time

2 1 2

Steel Rubber

II. MACHINE BODY

Fuel consumption

Unit kgf·m N·m ft·lbs % rpm rpm rpm sec.

5.57 54.6 40.3 9.2 2600

rpm

1350

Remarks

5.31 52.1 38.4 6.8

2300 < 2300 <

Arm + bucket Arm + bucket + dozer

+150 0

Glow 5 sec Temp. -17°C

rpm Battery spec 12V 40A

mm inch kgf kN lbs kgf kN lbs mm inch mm inch mm inch mm inch mm inch mm inch

300 11.81 1437 14.08 3161 720 7.06 1584 600 23.62 600 23.62 600 23.62 600 23.62 25 0.98 10 0.39

> > ± ± ± ± ± ± > > > > > > > > to to to to

20 deg, 10 min 126 1.24 278 64 0.63 141

η = 65%

10 m distance

Blade up & down 10 m distance

30 1.18 15 0.59

m3/h

Digging, 180 deg loading 45 deg digging & side dump

yd3/h sec.

Digging, 180 deg loading

sec.

Actual

/ / / / >

sec. sec.

yd3/h m3/h

Calculated

U17-3α (EU) / U17/U17-3 (PP)

L/h US gal/h L/h US gal/h

II-S-18

Load coefficiency = 60%

WSM U17-3α/U17-3/U17 Service

No 4

II. MACHINE BODY

Specifications Items

Boom lifting capacity

Arm digging force

Bucket digging force

Blade force

down

5 6 7 8 9

1 2 1 2 1 2 1 2 1 2

Boom speed Arm speed Bucket speed Blade speed Swivel angle while boom raise Inching performance

10 1 2

Arm cylinder cavitation Arm cylinder shrink

11 1 12 1

Blade cylinder cavitation Bucket outer width

2 13 1

up down crowd extend crowd dump up down

Unit

U17-3α (EU) / U17/U17-3 (PP)

kgf kN lbw kgf kN lbw kgf kN lbw kgf kN lbw kgf kN lbw sec. sec. sec. sec. sec. sec. sec. sec. deg. mm inch

863, 824< 8.46, 8.07< 1903, 1817< 1491, 1412< 14.6, 13.85< 3287, 3113<

mm inch without side cutter with side cutter

Max. digging height radius

Max. dump height radius

Distance max. digging depth

Bucket bottom height at arm vertical

5 6

Bucket wrist angle Bucket bottom angle

Distance to bucket tooth tip

min.

Distance to bucket tooth tip

Bucket bottom horizontal

Item 7 to sprocket center

mm inch mm inch mm inch mm inch mm inch mm inch deg. deg. mm inch mm inch mm inch

II-S-19

Remarks Front end, Arm extend bucket crowd, at tooth Bucket tooth root

Machine stance to JIS bucket tooth root Cutting edge down force at ground level

2.1 2.5 3.3 2.4 2.7 1.8 1.7 2.1

± ± ± ± ± ± ± ±

0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3

5 > 0.2 >

2015 79.33 2012 79.21

± ± ± ±

Oil temp. 50 ± 5°C Max. height to ground

Max. down to max. up Max. up to max. down GL-Max. height, before cushioning CV spool stroke Oil temp. 50 ± 5°C Oil temp. 95 ± 5°C, 1300 rpm, bucket heaped, load

202 7.95 121 4.76

at bucket pin From swivel center

1200 ± 36 47.24 ± 1.42 180 ± 3

Bucket horizontal

Boom up, arm extend bucket crowd From swivel center

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

Specifications Items

13 10 Item 7 to blade

12 Item 8 to blade Swivel, swing performance Swivel torque

2 3 4

1 1 1

Swivel capable angle at slope Swivel block performance L/R Swivel slippage (Flat ground, no L / R load)

5 6

1 1

Swivel start-up speed Swivel torque, max.

1 2 1

Swing speed

Reciprocating motion

Q7 1 1

Left / Right

Left Right Swivel R&L

Swing Lock L/R

Hydraulic performance Relief pressure setting

Swing

kgf·m kN·m ft·lbs kgf·m kN·m ft·lbs deg. deg. deg. deg. sec. kgf·m N·m ft·lbs sec. sec. mm inch mm inch

P1, P2

kgf/cm2 MPa bar psi

kgf/cm2 MPa bar psi kgf/cm2 MPa bar psi

Swivel brake relief pressure

Suction negative pressure

Boom relief pressure

U17-3α (EU) / U17/U17-3 (PP)

Remarks

mm inch mm inch mm inch

11 Item 8 to sprocket center

Q6 1 1

Unit

255, 217< 2.5, 2.1< 1844, 1569< 255, 217< 2.5, 2.1< 1844, 1569< 18 < 30 >

Arm extend, slow/quick

Bucket load = JIS heaped x 1.8 90 deg swivel

2.1 ± 0.2 255 2.5 1844 4.6 ± 0.3 3.7 ± 0.3 6 > 0.24 >

0 ~ 90 deg swivel

90 deg-swivel, 100 times actual digging cylinder dislocation 90 deg-swivel, 100 times

At pump delivery port

kgf/cm2 MPa bar psi kgf/cm2 MPa bar psi

At pump delivery port

kgf/cm2 MPa bar psi

At +50°C

II-S-20

At -10°C

50 ± 5°C

WSM U17-3α/U17-3/U17 Service

No 5

7 8

II. MACHINE BODY

Specifications Items Cylinder oil sealing capacity

Boom

Arm

Bucket

Blade

1 2 3 1 1

Boom cushioning performance

Accumulator function time Service port flow

2 Q8 1 1

30°C 50°C 80°C No load Load

Lever operating force & stroke Boom lever operating force

up 1st

up 2nd

down

Arm lever

Dump / crowd

Bucket lever

Dump / crowd

Swivel lever

L/R

Blade lever

Up / down

Travel lever

L/R F/R

Accelerator lever

10 Swing pedal

Unit

U17-3α (EU) / U17/U17-3 (PP)

mm inch mm inch mm inch mm inch sec. sec. sec. sec. L US gal L US gal kgf N lbf kgf N lbf kgf N lbf kgf N lbf kgf N lbf kgf N lbf kgf N lbf kgf N lbf kgf N lbf kgf N lbf

II-S-21

25 0.98 15 0.59 10 0.39 25 0.98 3 0.5 0.3

> > > > > > > > > to 1.5 <

Remarks Arm extend, bucket height 1 m, 10 min. Bucket load = JIS heaped*1.8

27 8.14 At 50 kgf/cm2

1.4 ± 0.5 13.7 ± 4.9 3.1 ± 1.1

1.4 13.7 3.1 1.4 13.7 10.1 1.4 13.7 10.1 1.4 13.7 10.1 3.1 30.4 22.4 1.5 14.7 10.8 3.4 33.3 25 7.0 68.6 15.4

± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ±

0.5 4.9 1.1 0.5 4.9 3.6 0.5 4.9 3.6 0.5 4.9 3.6 0.5 4.9 3.6 0.5 4.9 3.6 1.5 14.7 10.8 0.7 6.9 1.5

20 mm lower the lever top

Extend & crowd 20 mm lower Dump & crowd 20 mm lower Left & right 20 mm lower Up & down 20 mm lower F&R 20 mm lower 30 mm lower

WSM U17-3α/U17-3/U17 Service

No 1

II. MACHINE BODY

Specifications Items

11 Safety lock lever, L&R

down

12 Travel Hi-Lo change

13 Service port pedal

L/R

14 Bonnet lifting force

15 TPSS lever (PP-version)

Boom lever stroke

up down

Arm lever stroke

Bucket lever stroke

Swivel, swing lever stroke

Blade lever up & down

Travel lever, F & R

L R

Accelerator lever stroke

Swing pedal stroke

10 Service port pedal stroke

Unit

U17-3α (EU) / U17/U17-3 (PP)

kgf N lbf kgf N lbf kgf N lbf kgf N lbf kgf N lbf kgf N lbf mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

II-S-22

2.0 19.6 14.5 3.0 29.4 21.7 5.0 49.0 36.2

± ± ± ± ± ±

Remarks

1.0 9.8 7.2 1.0 9.8 7.2 Electrical push-type switch on the dozer lever

± 1.0 ± 9.8 ± 7.2

10.0 ± 98 ± 22 ± 72 ± 2.83 ± 72 ± 2.83 ± 72 ± 2.83 ± 74 ± 2.91 ± 74 ± 2.91 ± 80 ± 3.15 ± 75 ± 2.95 ± 75 ± 2.95 ± 99 3.9 6 ± 0.24 ± 12 ± 0.47 ±

1.0 9.8 2.2 10 0.39 10 0.39 10 0.39 10 0.39 10 0.39 10 0.39 10 0.39 10 0.39

10 0.39 10 0.39

Tip of the grip

Pedal edge

WSM U17-3α/U17-3/U17 Service

No Q9 1 1

II. MACHINE BODY

Specifications Items Stability Tipping load/distance of load point to tipping point

Front, Blade up

Front, Blade down

Rear, Blade up

Side (variable track)

1 2 3

Dynamic operation limit slope angle

STD arm Long arm Telescopic arm

Bucket limited load, static

Side

Extended

Forward

Retracted

Forward

Bucket limited Extended load, slow operation

Side

Forward

Retracted

Q10 1 1 2 3

Side

Forward

Comfortability Noise level

At operaCanopy tor's ear LPA Cab Noise source± LWA

Unit

U17-3α (EU) / U17/U17-3 (PP)

kgf·m N·m ft·lbs kgf·m N·m ft·lbs kgf·m N·m ft·lbs kgf·m N·m ft·lbs deg. deg. deg.

Arm extend, bucket crowd

Swivel angle = 0 deg. Blade up, side direction

kgf N lbs kgf N lbs kgf N lbs kgf N lbs kgf N lbs kgf N lbs kgf N lbs kgf N lbs

188, 162< 1842, 1558< 376, 357< 215, 175< 2107, 1715< 473, 386< 110, 95< 931< 209< 188, 175< 1078, 1715< 414, 386< 138, 121< 1352, 1186< 304, 267< 152, 130< 1490, 1274< 334, 287< 66, 63< 647, 619< 145, 139< 152, 130< 1490, 1274< 334, 287<

dB(A) dB(A) dB(A)

78> / 79> 92 >

II-S-23

Remarks

Front horizontal, bucket crowd arm tip end load swing straight dozer up. Bucket weight 37 kgf isn’t included.

Arm extended, bucket crowd, dozer up swing straight. Bucket weight 37 kgf isn’t included.

Cab door close

WSM U17-3Î±/U17-3/U17 Service

II. MACHINE BODY

II-S-24

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

B. FRONT ATTACHMENT a. Pin, Bush and Shim Installation (1) Swing cylinder, swing bracket, boom 51

43 42 41 72 71

70 60

61 62

21 22

23 24

Swing bracket - swivel frame Code No. RB2386645 RB2386639 RB2386638 RB2384113 0117361204 0257250120

Q’ty 2 2 2 2 2 2

Part Pin Bush Bush Bush Bolt Nut

No.

Remarks

10 11 12 13 14 15

φ 50 (φ 1.97in) 506037 506028 506040

No.

Remarks

12 13 35 34 11 30

14 15

Swing bracket - boom cylinder Code No. RB2386664 RB2386659 RB2386637 0117361080 0257450100

Q’ty 1 1 1 1 1

Part Pin Bush Bush Bolt Nut

20 φ 35 (φ 1.38in) 21 354332 22 354348 23 24

Swing bracket - boom Code No. RB2386656 RB2386646 RB2376657 RB2376658 0117361204 0257450100 0661115010

Q’ty

Part

No.

Remarks

1 2 1 1 1 1 1

Pin Bush Bush Bush Bolt Nut Grease nipple

30 31 32 33 34 35 36

φ 35 (φ 1.38in) 354535 354344 354344

No.

Remarks

RB2386746 0113361020 691816644 535825356

Q’ty 1 1 1 1

Part Pin Bolt Spacer Washer

Code No.

Q’ty

RA22166481 0113361020 6718166441 5358253561

1 1

Part Pin Bolt Spacer Washer

No.

Remarks

50 φ 30 (φ 1.18in) 52 54 55

Boom - boom cylinder Code No.

40 φ 30 (φ 1.18in) 41 42 43

Swing bracket - Swing cylinder

RB2386664 0117361080 0257450100

Swing bracket - Swing cylinder Code No.

Q’ty 1 2 1

Part

No.

Remarks

60 φ 35 (φ 1.38in) 61 62

Pin Bolt Nut

Boom - arm cylinder Code No. RB2386654 0117361080 0257450100

Q’ty 1 2 1

II-S-25

Part Pin Bolt Nut

No.

Remarks

70 φ 30 (φ 1.18in) 71 72

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(2) Arm, bucket link

114 111

125 124 123

121

92 91

100

126 122

102 101

110 120 112113

83 82

133 132

130

131

134 80

142 145 144 143

146 140 141 Arm - bucket

Boom - arm Code No. RB2386663 687216652Δ 0117361080 0257450100 0661115010

Q’ty

Part

1 2 1 1 1

Pin Bush Bolt Nut Grease nipple

No.

Remarks

80 φ 30 (φ 1.18in) 81 303835 82 83 84

Arm - arm cylinder Code No.

Q’ty

RB2386665Δ 0117361065 0257450100

1 1 1

Part

No.

Arm - bucket cylinder Code No. RB2386665 0117361065 0257450100

Q’ty 1 1 1

Part

No.

Remarks

100 φ 30 (φ 1.18in) 101 102

Pin Bolt Nut

Arm - bucket link2, 3 Code No. RB2386675 687216652 0117361080 0211860100 0661115010

Q’ty

Part

1 2 1 2 1

Pin Bush Bolt Nut Grease nipple

No.

Q’ty

Part

1 1 2 2 1 1 1 1

Pin-EU Pin-PP Bush Dust seal Bolt Plain washer Spacer Grease nipple

No.

Remarks

120 φ 30 (φ 1.18in) 120 φ 30 (φ 1.18in) 121 303835 122 123 124 125 126

Remarks

90 φ 30 (φ 1.18in) 91 92

Pin Bolt Nut

Code No. RA22166761 RB2386676Δ 687216652Δ RA11167331 0113361225 0401560120 6874166921 0661115010

Remarks

110 φ 30 (φ 1.18in) 111 303835 112 113 114

Bucket link1 - link2, 3 Code No.

Q’ty

Part

RB23866771 RB23866781 0117361080 0211860100 0661115010

1 2 1 2 1

Pin Bush Bolt Nut Grease nipple

No.

Remarks

130 φ 30 (φ 1.18in) 131 303840 132 133 134

Bucket link1 - bucket Code No.

Q’ty

Part

RA22166761 RB2386676Δ 6872166521 RA11167331 0113361225 0401560120 6874166921 0661115010

1 1 2 2 1 1 1 1

Pin-EU Pin-PP Bush Dust seal Bolt Plain washer Spacer Grease nipple

II-S-26

No.

Remarks

140 φ 30 (φ 1.18in) 120 φ 30 (φ 1.18in) 141 303835 142 143 144 145 146

WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(3) Blade, blade cylinder and truck cylinder

153 152 151 150 154

170

171172173 181182

160

180

163 162 161

191 192 190

Truck frame - blade Code No.

Q’ty

RA21174441

0113361020 6918166441 5358253661 0661625010

2 2 2 2

Blade - blade cylinder Part

No.

Remarks

150 φ 30 x 102.5L (φ 1.18 x L4.04 in) Bolt 151 Collar 152 Washer 153 Grease nipple 154 Pin

Truck frame - blade cylinder Code No.

Q’ty

Part

RB2387446

0113361020 5358253661 0661625010

1 1 1

Bolt Collar Washer

No.

Remarks

160 φ 30 x 84.5L (φ 1.18 x L3.33 in) 161 162 163

Code No.

Q’ty

Part

RB2387446

0113361020 5358253661 0661625010

1 1 1

Bolt Collar Washer

No.

Remarks

170 φ 30 x 84.5L (φ 1.18 x L3.33 in) 171 172 173

Truck frame - truck cylinder Code No.

Q’ty

RA21121441

691912129 0451260120

2 2

Part

No.

Remarks

180 φ 30 x 95L (φ 1.18 x L3.54 in) Bolt (Stopper) 181 Washer 182 Pin

Blade - extension blade Code No.

Q’ty

RA21121441

0552551000 RG1088948

2 2

Split pin Pin

II-S-27

Part

No.

Remarks

190 φ 25 x 113L (φ 0.98 x L4.45 in) 191 192

WSM U17-3Îą/U17-3/U17 Service

II. MACHINE BODY

(4) Clearance adjustment (1)

(6)

(7)

(2)

(8)

(3) (9)

(4)

(5) (1) 68721-6697 Shim (0.5, 60-31) SPCC 68051-6633 Shim (1.0, 60-31) SPCC Selective use 68051-6634 Shim (1.6, 60-31) SPCC * Insert a number of shims according to the clearance on the swing cyl bottom side. (2) RA211-6647 Shim (0.3, 70-36) SPCC RB211-6762 Shim (0.5, 70-36) SPCC 68741-6688 Shim (1.0, 70-36) SPCC Selective use 68741-6689 Shim (1.6, 60-36) SPCC RA211-6649 Shim (2.0, 70-36) SPCC (3) RB238-6644 Thrust collar (2.3, 92-51) SK5M * Refer to the mounting method of thrust collar.

1. Front Play * Pin on fulcrum Thrust direction Clearance

0.6 mm (0.023 in) max. * If the play exceeds 0.6 mm, add some shims and make adjustments. (Use the shims shown in the illustration.)

2. Vertical clearance between swivel frame and swing bracket.

+ 0.3 ~ +1.3 mm (+ 0.012 ~ +0.051 in)

(4) RB238-6644 Thrust collar (2.3, 92-51) SK5M RB238-6648 Thrust collar (2.0, 92-51) SK5M Selective use RB238-6649 Thrust collar (2.5, 92-51) SK5M * Refer to the mounting method of thrust collar.

4. Installation of thrust collar

} }

3. Use the shim and thrust collar selectively with each part.

Apply grease

(5) RG401-6762 Shim (0.5, 70-36) SPCC (6) 68721-6697 Shim (0.5, 60-31) SPCC 68051-6633 Shim (1.0, 60-31) SPCC (7) 68721-6697 Shim (0.5, 60-31) SPCC 68051-6633 Shim (1.6, 60-31) SPCC (8) 68721-6697 Shim (0.5, 60-31) SPCC 68051-6633 Shim (1.0, 60-31) SPCC (9) 68721-6697 Shim (0.5, 60-31) SPCC 68051-6633 Shim (1.0, 60-31) SPCC

Apply grease on both surface.

} Selective use } Selective use } Selective use } Selective use

A clearance of 1-2 mm to be ensured between lock-bolt tightened face and nut

Lock nut type

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Double nut type

WSM U17-3Îą/U17-3/U17 Service

II. MACHINE BODY

b. Instruction to Press in the Bushing (1) Bush installation steps Part where bushing and dust seal are inserted. 1. Bushing insertion (Completed assembly with bushing press-fit is excluded.) 2. Bushing insertion dimension

1) If no dust seals are used, check that the bushing does not protrude from either side. 2) Maintain room for a dust seal on each side if it is used. (Only the dimension management of the press-fit direction can be enough.)

3. Dust seal mounting direction

Mount as shown in the illustration.

4. Bushing insertion direction

Insert the bushing from the 15Â° chamfer side.

(2)

(2) (2) (1)

(1)

(1) Both bushing and dust seal (2) Only bushings

Insert the bushing by using an appropriate steel plate. * Do not directly hit the bushing.

(2) Installing direction of dust seal Bush

Dust Seal

Install the dust seals in the direction as shown at left. If in the wrong direction, the sealing effect is adversely affected, which may get the pins worn out earlier. (Enlarged view of dust seal)

OutSide

Toward the Bushing

Press in

Jig

Bush

3 15

Dust seal

0. 5

Dust seal

Bush direction

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WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(3) Installation of thrust collar on the swing bracket

Thrust collar

1. Install the thrust collar, with its grooved face downward, on top of the swivel frame. 2. Select and install a 0.5 or 1.0 mm (0.02 ~ 0.04”) thick shim to have the clearance smaller than 0.5 mm (0.02”). Thrust collar 090: 2.3 mm (0.09 in) 095: 2.3, 2.0, 2.5 selective Shim 200: 0.5, 1.0, 1.6 selective

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WSM U17-3α/U17-3/U17 Service

II. MACHINE BODY

(4) Swing bracket pin & bush (1)

(1)Attention to the bush driving direction (align the holes). Make sure later that the shaft goes through smoothly. (2)Keep flush with the end face. (3)Keep the collar upward. (4)Attention to the bush driving direction (align the holes). Make sure later that the shaft goes through smoothly.

(2) 2

3 (3)

(4)

(2)

1 Bush 2 Dust seal 3 Collar

(3)

Specifications, New pin and bushing [Unit: mm (inch)] Model Pin outer dia. Pin material Bush inner dia. Bush outer dia. Bush material

KX008-3, U10-3

KX36-3, KX41-3S, V

U17/U17-3, U17-3α

U20-3, U25-3α

-0.002 o 35 --0.05 0.08 ( o 1.38 -0.003 )

-0.002 o 50 --0.05 0.08 ( o 1.97 -0.003 )

←

-0.002 o 60 --0.05 0.08 ( o 2.36 -0.003 )

←

S45C-D, S43C-D

+0.011 +0.006

← +0.011

←

o 60

+0.004 o 43 +0.09 +0.06 ( o 1.69 +0.002 )

+0.004 o 60 +0.09 +0.06 ( o 2.36 +0.002 )

←

+0.004 o 72 +0.09 +0.06 ( o 2.83 +0.002 )

STKM16A S43C S45C

←

( o 1.38

Thrust washer, shims thickness

)

o 50

+0.07 +0.04

( o 1.97

Thrust collar : 2.0, 2.3, 2.5 Shim : 0.5, 1.0, 1.6

Swing bracket material Test pin, to go through smoothly

+0.011 +0.006

)

o 35

+0.07 +0.04

FCD500-7 -

o 49.95 ( o 1.967)

pin: High frequency induction surface hardening/ Effective hardened depth: 2 ~ 4mm (0.08” ~ 0.16”) Surface hardness: 52 ~ 59 HRC Diameter value is for single part before installation.

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←

+0.07 +0.04

( o 2.36 +0.006 )

Thrust collar : 2.8, 3.2 Shim : 0.5, 1.0, 1.6

←

Remarks

WSM U17-3Îą/U17-3/U17 Service

II. MACHINE BODY

(5)Measuring the swing bracket looseness Set a dial gauge as shown below and note the height of the pointer. Lift the machine front until the swing bracket tilts to maximum frontward. Now set the dial gauge reading to zero. Next move the boom and arm until the swing bracket tilts to maximum backward. Now take the dial gauge reading. There is no specifications yet. This measuring method is just for your reference. Swing bracket looseness measuring procedure photos

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