Page 1

WORKSHOP MANUAL

KUBOTA EXCAVATOR

U15 U15-3 Service Chapter

Code No.97899-61282


CONTENTS I General II Machine Body III Engine IV Hydraulic System V Electrical system


WSM U15, U15-3 Service

I. General A.Body and engine identification marks . . . . . . . . . . . . . I-S-3 B.Safety precautions for servicing, disassembly and reassembly . . I-S-4 a. b. c. d.

Safety measures before starting work. . . . . . . . . . . . . . . . . . . Safety measures during work . . . . . . . . . . . . . . . . . . . . . . . . . Preparation for disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . Precautions for disassembly and reassembly. . . . . . . . . . . . .

I-S-4 I-S-4 I-S-5 I-S-5

C.Important Safety process and critical functional process . . I-S-6 a. Essential Adhesives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-6 b. Important Safety Process .. . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-6 c. Important Critical Functional Process . . . . . . . . . . . . . . . . . . I-S-6

D.Important inspection items after reassembling . . . . . . I-S-6 a. Operate the Machine and check for Unusual Noise and Vibrations. . . . b. Make Sure the Safety decals and Wireharness Clamps are in their Specified Positions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . c. With the Machine Front in a Specified Posture, Check the Amount of Hydrauric Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . d. Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I-S-6 I-S-6 I-S-6 I-S-7

E.Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . I-S-12 a. EU version. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . b. PP (KTC, KCL)-version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . b-1. KTA-version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . c. Hydraulic Oil Check for machines with Hydraulic Breakers . d. Maintenance items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . e. Troubleshooting for operators . . . . . . . . . . . . . . . . . . . . . . . . f. Periodic replacement of important component parts. . . . . . . g. Recommend oils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . h. Lifting capacity : U15-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I-S-12 I-S-15 I-S-16-1 I-S-16-2 I-S-17 I-S-19 I-S-20 I-S-21 I-S-22

F. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-S-23 a. b. c. d. e.

Machine Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lever stroke and operating force . . . . . . . . . . . . . . . . . . . . . Dimensions of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quality specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Note : PP - version = Pan Pacific - version = KTC, KCL, KTA - version

I-S-1

I-S-23 I-S-23 I-S-24 I-S-25 I-S-34


WSM U15, U15-3 Service

A.Body and engine identification marks If trouble should occur during use, or if servicing is necessary, contact the dealer who handles the machine. At that time please inform the machine model and engine type and serial numbers. Model

Serial No.

Excavator Engine Dealer's name (To be filled in through the owner) EU - version

2-47, Shikitsuhigasi 1-Chome, Naniwa-ku, Osaka, 556-8601 JAPAN MODEL SERIAL No. ENGINE No. PRODUCT IDENTIFICATION NUMBER

1 2 3 4

No. 1 2 3 4

Items

Contents ; Example

Machine model Serial No. Engine No. PRODUCT IDENTIFICATION No.

U15-3 40001 >JKUU0153*00S40001<

Example : S/N 40001 RA018-5772

Name plate : Code No. RA018-57721

(1) Machine serial number

(1) Serial No. (2) Engine serial number e.g. D782 5L0023 “5” indicates year of 2005 and “L” indicates June. So, 5L indicates that the engine was manufactured in June 2005.

(1) Engine serial No. I-S-3


WSM U15, U15-3 Service

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 diassembled 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 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 hydrauricunits for repair or others, or when using a hammer. Wear leather gloves, however, when hoisting wires.

(2) Team work 1. When working with two or more people, divide the work and maintain close communication. 2. Clane 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 removingbolts.

(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.

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

(3) Keep workshop in order 1. Secure appropriate space needed for disassembly to the job. 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.

(5) Others 1. To work under a jacked-up carrier, be sure to place wood pieces under it. 2. When charging batteris, 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 tp connect the positive (+) cord first.

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-4


WSM U15, U15-3 Service

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 corting. 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-5


WSM U15, U15-3 Service

C.Important Safety process and critical functional process The following instructions are related to essential adhesives, important safety process

S

and critical func-

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

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

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

c. Important Critical Functional Process A . 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)

D.Important inspection items after reassembling a. Operate the Machine and check for Unusual Noise and Vibrations. b. Make Sure the Safety decals and Wireharness Clamps are in their Specified Positions. c. With the Machine Front in a Specified Posture, Check the Amount of Hydrauric 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 hydrauric 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 cyrinder 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

I-S-6


WSM U15, U15-3 Service

d. Piping (1) General precautions • Tightening 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. * Excessivly 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.

(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 torqoe. • 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-7


WSM U15, U15-3 Service

(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-8

When in steel pipe is in use.

15 mm 0.59 in

16 mm 0.63 in


WSM U15, U15-3 Service

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

No.

Dia. (mm)

Code No.

1

Ø12 ~ 16

09318-89016

2

Ø19 ~ 25

09318-89024

3

Ø31 ~ 40

09318-89039

4

Ø36 ~ 46

09318-89045

5

Ø15 ~ 25

RC101-64580

6

Ø26 ~ 38

68311-72820

7

Ø13 ~ 20

RB101-63630

8

Ø40 ~ 55

RC411-63180

9

Ø77 ~ 95

69284-63170

10

Ø50 ~ 60

RC401-63190

11

Ø32 ~ 44

RD411-63820

12

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-9

Remarks

When sleeve nut is in use.


WSM U15, U15-3 Service

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

4T

7T

9T

Nomial Dia. SS41

S40C, S45C

SCr4

M6

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

M8

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

4T

SS41

Over 392 MPa 4000 kgf/cm2 56892 lbf/in2

HRB 62 ~ 98

No mark or marked 4

7T

S40C S45C

Over 686 MPa 7000 kgf/cm2 99561 lbf/in2

HRC 20 ~ 28

Marked 7

9T

SCr4

Over 882 MPa 9000 kgf/cm2 128007 lbf/in2

HRC 28 ~ 34

Marked 9

I-S-10

Bolt head marking


WSM U15, U15-3 Service

(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 hte mating seal boforehand.

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-11


WSM U15, U15-3 Service

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





200 h

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

I-S-12


WSM U15, U15-3 Service

[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







200 h

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

I-S-13


WSM U15, U15-3 Service

[Servicing by skilled personnel or KUBOTA dealer]

Elapsed hours of operation *

Servicing

50

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



500 h



500 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.

 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-13-1


WSM U15, U15-3 Service

[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



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-14


WSM U15, U15-3 Service

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

Check points

1

Coolant

2

Fuel

3

Intervals check

Hour meter indicator 50

100

Engine oil

check

Daily check

check

Daily check

change check

6

Radiator and oil cooler

check

Daily check

7

Engine and electrical wiring

check

Daily check

8

Fuel tank, Fuel filter

drain check

9

Battery condition Greasing swing bearing teeth

11

Fan belt tension Radiator hoses and clamps

Outer element Inner element

400

450

Consequently

every 500 hrs

change

10

350

Daily check

Lubrication points

-

300

every 2 years

5

Air filter element

250

Daily check

Hydraulic oil

13

200

change

4

12

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

*2

replace

every 1000 hrs

*2

replace

every 1000 hrs

*2

14

Greasing swing ball bearings

-

every 200 hrs

15

Fuel filter element

replace

every 400 hrs

16

Engine oil filter

replace

every 500 hrs

17

Drive unit oil

change

every 500 hrs

18

Hydraulic return filter element

replace

every 500 hrs

19

Hydraulic suction filter element

replace

every 1000 hrs

20

Fuel injection nozzle injection pressure

check

every 1500 hrs

21

Front idler and track roller oil

change

every 2000 hrs

22

Alternator and starter motor

check

every 2000 hrs

23

Injection pump

check

every 3000 hrs

24

Radiator system

25

Fuel line and Intake air line

*1

Daily check

rinse

every 2 years

check

every 200 hrs

replace

every 2 years

* 500 thru 1000 continued to the following table.

I-S-15

@

@

*4

@

*4

@

*3

@


WSM U15, U15-3 Service

No.

Check points

1

Coolant

2

Fuel

3

Intervals check

Hour meter indicator 500

550

Engine oil

Daily check

check

Daily check

change

Lubrication points

6

Radiator and oil cooler

check

Daily check

7

Engine and electrical wiring

check

Daily check

8

Fuel tank, Fuel filter

drain check

change

9

Battery condition Greasing swing bearing teeth

11

Fan belt tension

13

Radiator hoses and clamps

Air filter element

Outer element Inner element

800

1000

Consequently

every 500 hrs

5

10

750

Daily check

Hydraulic oil

-

700

every 2 years

check

check

650

Daily check

change

4

12

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

*2

replace

every 1000 hrs

*2

replace

every 1000 hrs

*2

14

Greasing swing ball bearings

-

every 200 hrs

15

Fuel filter element

replace

every 400 hrs

16

Engine oil filter

replace

every 500 hrs

17

Drive unit oil

change

every 500 hrs

18

Hydraulic return filter element

replace

every 500 hrs

19

Hydraulic suction filter element

replace

every 1000 hrs

20

Fuel injection nozzle injection pressure

check

every 1500 hrs

21

Front idler and track roller oil

change

every 2000 hrs

22

Alternator and starter motor

check

every 2000 hrs

23

Injection pump

check

every 3000 hrs

24

Radiator system

25

Fuel line and Intake air line

*1

Daily check

rinse

every 2 years

check

every 200 hrs

replace

every 2 years

@

@

*4

@

*4

@

*3

@

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-16


WSM U15, U15-3 Service

b-1. KTA-version No.

Checkpoints

Intervals

Hour meter indicator 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 5 Lubrication points

every 250 hrs

check Daily check change

every 1000 hrs

check Daily check change

every 2 years

check Daily check

6 Radiator

check Daily check

7 Battery condition

check

8 Electrical lines

check Daily check, Annual servicing

9

Consequently

every 50 hrs

Greasing of swing bearing teeth

every 50 hrs

10 Drive unit oil

change

every 500 hrs

11 Fan belt tension

adjust

every 200 hrs

12

Radiator hoses and clamps

13 Air filter element*

check

every 200 hrs

change

every 2 years

clean

every 200 hrs

change

every 1000 hrs

@

14

Greasing of swing ball bearings

15

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

19

Hydraulic suction filter element

change

every 1000 hrs

20

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

every 200 hrs

check

@

IMPORTANT: â&#x20AC;˘ * 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". â&#x20AC;˘ 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-16-1


WSM U15, U15-3 Service

c. 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-16-2


WSM U15, U15-3 Service

d. Maintenance items (1) Drive unit Oil Change(First Oil Change of the 100 hours) CAUTION To avoid personal injury: • Lower attachments on theground, stop the engine andremove the key beforeundertaking the oil change. 1) Rotate the crawler so that the drain plugof the drive unit is in the bottom position. 2) Remove the drain plug to let the oil runout. Screw in and tighten the drain plugagain and fill with gear oil through the oilcheck port. 3) Fill oil until it overflows out of the oilcheck 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 thedust-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)

I-S-17

Outer element Inner element Dust-cover Clamps


WSM U15, U15-3 Service

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 colour 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.

(1) Track frame slide pipes

I-S-18


WSM U15, U15-3 Service

e. 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 temprature. (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 gascolour

Drive System

HydraulicSystem

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-19


WSM U15, U15-3 Service

f. 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)

2

2

Fuel hose (Fuel filter-Fuel pump)

2

3

Fuel hose (Fuel pump-Fuel nozzle)

2

4

Fuel hose (Fuel nozzle-Fuel tank)

1

5

Fuel hose (Fuel tank-Fuel drain)

1

6

Hydraulic hose (Main pump suction)

1

7

Hydraulic hose (Main pump delivery)

4

8

Hydraulic hose (Boom cylinder)

2

9

Hydraulic hose (Arm cylinder)

2

10

Hydraulic hose (Bucket cylinder)

2

11

Hydraulic hose (Swing cylinder)

2

12

Hydraulic hose (Dozer cylinder)

2

13

Hydraulic hose (Service port)

4

Period

Every 2 years or 4000 hours

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

I-S-20


WSM U15, U15-3 Service

g. Recommend oils IMPORTANT 1. Before delivery, the hydraulic oil used was an ISO 46 viscosity grade. 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-21

MIL-L-2105C


WSM U15, U15-3 Service

h. Lifting capacity : U15-3 HEIGHT (mm)

0

kN (ton) LOAD RADIUS (mm) 500 1000 1500 2000 2500 3000 3500

HEIGHT (mm)

3500

3500

3000

3000 2.9 (0.30) 3.1 2.9 (0.32) (0.30) 5.2 4.0 2.8 2.1 (0.53) (0.41) (0.29) (0.22) 3.8 2.7 2.1 (0.39) (0.28) (0.21) 3.6 2.6 2.0 (0.37) (0.27) (0.21) 3.5 2.6 2.0 (0.36) (0.26) (0.20) 7.3 5.5 3.5 2.5 2.0 (0.75) (0.56) (0.36) (0.26) (0.20) 11.0 5.6 3.5 2.5 (1.12) (0.57) (0.36) (0.26) 5.3 3.6 (0.54) (0.37)

2500 2000 1500 1000 GL 500 0 –500 –1000 –1500 –2000

2000 1500 1000 GL 500 0 –500 –1000 –1500

0

(iii) OVER – SIDE (TRACK WIDTH 1240mm)

kN (ton) LOAD RADIUS (mm) 500 1000 1500 2000 2500 3000 3500

3500 3000 2500 2000 1500 1000 GL 500 0 –500 –1000 –1500

2.7 (0.28) 3.1 2.7 (0.32) (0.28) 5.2 3.7 2.7 2.0 (0.53) (0.38) (0.27) (0.20) 3.5 2.6 2.0 (0.36) (0.26) (0.20) 3.3 2.5 1.9 (0.34) (0.25) (0.19) 3.3 2.4 1.9 (0.33) (0.24) (0.19) 7.3 5.0 3.2 2.4 1.8 (0.75) (0.51) (0.33) (0.24) (0.19) 10.9 5.1 3.2 2.4 (1.11) (0.52) (0.33) (0.24) 5.2 3.3 (0.53) (0.34)

–2000

(i) OVER – END (BLADE UP) HEIGHT (mm)

2500

0

kN (ton) LOAD RADIUS (mm) 500 1000 1500 2000 2500 3000 3500

3.7 (0.37) 3.1 3.6 (0.32) (0.36) 5.2 4.5 4.0 3.6 (0.53) (0.46) (0.41) (0.37) 6.2 4.6 3.8 (0.63) (0.47) (0.38) 6.9 4.9 3.8 (0.70) (0.50) (0.39) 6.6 4.8 3.6 (0.67) (0.49) (0.37) 7.3 8.1 5.8 4.3 3.2 (0.75) (0.83) (0.60) (0.44) (0.33) 11.0 7.0 4.9 3.6 (1.12) (0.71) (0.50) (0.37) 5.3 3.7 (0.54) (0.37)

–2000 (ii) OVER – END (BLADE DOWN)

I-S-22


WSM U15, U15-3 Service

F. Specifications a. Machine Weight Iron crawler isnâ&#x20AC;&#x2122;t available for these models.

(1) KE, KDG, KUK version

unit

U15-3

Canopy

Long arm

kg

1490

Cabin

Long arm

kg

1580

kg lbs

1600 3527

(2) PP (KTC, KCL, KTA) version 4 post Rops

Rubber crawler

Long arm is installed in standard version.

b. Main Specifications model

Engine

U15-3 (EU, new)

Brand

KUBOTA

KUBOTA

Type

D782-EBH-4

D782-BH

PS/rpm

13/2300

12/2100

kW/rpm

9.6/2300

8.8/2100

3

778 (47.5)

778 (47.5)

1600 (3527.4)

1450 (3196.7)

Output Displacement

Machine weight

cm

(in3)

kg (lbs)

Excavating capacity Hydraulic pump P1, P2 P3

U-15 (EU, old)

Bucket

kN (kgf) lbf

15.2 (1550) 3147

12.5 (-) 2810

Arm

kN (kgf) lbf

8.8 (900) 1978

8.5 (-) 1910

Relief pressure

MPa (kg/cm2) psi

21.6 (220) 3129

20.6 (210) 2988

Pump discharge rate

L/min (US GPM)

16.6 (4.39)

15.1 (3.99)

Relief pressure

MPa (kg/cm2) psi

18.6 (190) 2702

210 (2988)

Pump discharge rate

L/min (US GPM)

10.4 (2.75)

9.5 (2.51)

I-S-23


WSM U15, U15-3 Service

c. Lever stroke and operating force Reference on new vehicle

Stroke Boom lever

Operating force

Swivel lever

13.7 (1.4) 3.1

mm (in)

Play

mm (in)

Stroke

mm (in)

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

Operating force

N (kgf) lbf

13.7 (1.4) 3.1

Play

mm (in)

Stroke

mm (in)

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

N (kgf) lbf

13.7 (1.4) 3.1

mm (in)

Operating force

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

mm (in)

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

N (kgf) lbf

15.0 (1.5) 3.3

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)

N (kgf) lbf

30.4 (3.1) 6.8

Stroke

Dozer lever

N (kgf) lbf

13.7 (1.4) 3.1

Operating force

Acceleration lever

72 (2.83)

mm (in)

Operating force

Play

Travel lever

mm (in)

N (kgf) lbf

Stroke

Bucket lever

U15, U15-3

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

Play Arm lever

Unit

Operating force Stroke Operating force

Lock lever, up

Operating force

Lock lever, down

Operating force

Swing pedal

Operating force

N (kgf) lbf

98.0 (10.0) 22.0

Travel high SW

Operating force

N (kgf) lbf

-

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

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

19.6 (2.0) 4.4 29.4 (3.0) 6.6

I-S-24

Measured at the grip end Electric switch


WSM U15, U15-3 Service

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

I-S-25

[Unit : in]

Remarks


WSM U15, U15-3 Service

(2) Bucket fixture dimensions Unit

U15-3, U15

A

mm (in)

45.3 (1.78)

B

mm (in)

2 x M12 x 1.25

C

mm (in)

45.3 (1.78)

D

mm (in)

45.3 (1.78)

E

mm (in)

16.5 (0.65)

F

mm (in)

3.95 (0.16)

G

mm (in)

865 (34.06)

H

mm (in)

2 (0.08)

I

mm (in)

180 (7.09)

J

mm (in)

167.5 (6.59)

K

mm (in)

104.5 (4.11)

L

mm (in)

735 (28.94)

M

mm (in)

173 (6.81)

N

mm (in)

175 (6.89)

O

mm (in)

85 (3.35)

Remarks

I-S-26


WSM U15, U15-3 Service

(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))

I-S-27


WSM U15, U15-3 Service

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

U15, U15-3

Lower roller (a) Guide width

(A)/(B)

mm

Ď&#x2020;80/76 (3.15/2.99)

(b) Outside diameter

(A)/(B)

mm

Ď&#x2020;110 (4.33)

(c) Roller width

(A)/(B)

mm

102 (4.02)

(d) Roller width

(A)/(B)

mm

23/20 (0.91/0.79)

(e) Slide plate

(A)/(B)

mm

9/4 (0.35/0.16)

(d)

Remarks

Slide plate (e)

(a)

(b)

(c)

I-S-28


WSM U15, U15-3 Service

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

U15-3, U15

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)

(c) Idler width

(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)

I-S-29


WSM U15, U15-3 Service

(6)Dozer Unit

U15-3, U15

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

A

Width

mm (in)

1244/990 (48.98/38.98)

B

Height

mm (in)

261 (10.28)

C

Length

mm (in)

710 (27.95)

D

Tip wear thickness

mm (in)

t 9 (t0.35)

E

Distance between supports

mm (in)

434 (17.09)

Movement above ground/below ground

mm (in)

263/182 (10.35/7.17)

Dozer capacity

m

3

(ft3)

0.067 (2.25)

I-S-30

w/o Extention blade


WSM U15, U15-3 Service

(7) Bucket dimensions Unit

U15-3, U15

(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

I-S-31


WSM U15, U15-3 Service

(8) Machine weight and parts weight *

The weights in the table below are approximate. Unit

U15-3, U15

kg (lbs)

1600 (3527)

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)

Remarks

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

U15-3, U15

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)

I-S-32

Remarks

Sprocket included

Without joint

Offset


WSM U15, U15-3 Service

(9) Water and Oil Quantity Unit

U15, U15-3

Radiator soft water

L (US gal)

2.7 (0.713)

Reserve tank soft water

L (US gal)

0.6 (0.159)

Crankcase engine oil (at filter replacement)

L (US gal)

3.5 (0.295)

Class CC 10W30

Hydraulic tank oil

L (US gal)

13 (3.434)

ISO VG 46

Total hydraulic oil

L (US gal)

22 (5.812)

ISO VG 46

Wheel motor gear oil

L (US gal)

0.25 (0.066)

Swivel reducer gear oil

L (US gal)

-

Track roller gear oil

cc (cu-in)

40 (2.44)

Carrier roller (upper track 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)

18 (4.755)

Diesel light oil No. 3

I-S-33

Remarks Kubota LLC-N-50F

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


WSM U15, U15-3 Service

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

2

3

4

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

2

Total width

3

Total height(Canopy)

4

Total height(Cabin)

1

Weight

Machine weight(Canopy)

2

Machine weight(Cabin)

3

Ground contact press. (Canopy)

4

Ground contact press. (Cabin)

1 2

Performance

Swivel speed Travel speed F1

3

F2

4

R1

5

R2

6 1

Gradeability Rear end min. turning radius

2

Swivel frame rear ground clearance

3

Tambler center distance

4

Crawler total length

5

Crawler total width

6

Crawler shoe width

7

Min. ground clearance

Unit

U15-3 EU / U15(KTC)

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

2600 ± 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%

8.7 2.2 1.37 4.0 2.49 2.2 1.37 4.0 2.49 30 620 24.4 422 16.6 1230 48.4 1587 62.5 1240/990 48.8/39.0 230 9.1 145 5.7

I-S-34

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

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


WSM U15, U15-3 Service No 5

6

1

Specificatios Items Engine

2

Rated output

3 4

Rated speed Displacement

1 2

Hydraulic pump type Pump delivery P1,P2 P3 P4

4

Main relief pres- P1,P2 sure (Bench set)

P3

5

Main relief pres- P4 sure (Bench set)

7 8

1 1

Swivel motor type Under carriage Travel motor type

9

2 3 1

Parking brake type Crawler shoe type Front attachment Bucket CECE heaped capacity SAE, JIS

2

Unit

Model name

3

Bucket width

4 5 6

Swing angle L R Max. digging radius

7

Ground level Max. digging radius

8

Ground level Min. finish radius

9

Max. digging depth

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

U15-3 EU / U15(KTC)

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

40

+3 -2

bar

39

+3 -2

psi

569

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

I-S-35

Remarks

EU : D782-BH-4 PP : D782-E2-BH-4 9.6 ± 0.2 13.0 ± 0.3 2300 0.778 778 0.21 Variable x2 + gear 16.6 4.38 10.4 2.75 6.2 1.64

+43 -28

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

± ± ± ± ± ± ± ± ± ± ± ± ±

0.003 10 0.4 2 2 59 2.3 58 2.3 26 1.0 46 1.8

Without side cutter

Bucket bottom horizontal


WSM U15, U15-3 Service No 9

Specificatios Items

10 Front attachment Max. vertical digging depth 11

Max. digging height

12

Max. dump height

13

Max. dump height (Arm vertical)

14

Mini. turning radius

15

Mini. turning radius (Left swing)

16

Off-set amount

17

L R

18

Max. digging force

19

Optional JIS, SAE bucket range

10 1

Blade

Width

2

Height

3

Length

4

Max. lift above GL

5

Max. below GL

6

Displacement capacity

11 1

Water & oil

Radiator capacity

2

Reserve tank capacity

3

Engine crank case

4

Hydraulic oil Full (all amount)

5

Hydraulic oil Tank (tank amount)

6

Wheel motor

7

Swivel reduction case

8

Track roller

9

Front idler

Unit

U15-3 EU / U15(KTC)

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch kgf N lbw

1911 ± 75.2 ± 3536 ± 139.2 ± 2443 ± 96.2 ± 1426 ± 56.1 ± 1207 ± 47.5 ± 510 ± 20.1 ± 385 ± 15.2 ± 1.55 15.2 3.42

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

1244/990 49.0/39.0 261 10.3 263 10.4 182 7.2

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

I-S-36

38 1.5 71 2.8 49 1.9

43 1.7 36 1.4 15 0.6 12 0.5

± ± ± ±

5 0.2 5 0.2

± ± ± ±

13 0.5 9 0.4

2.7 0.71 0.6 0.16 3.5 0.30 22 5.81 13 3.43 0.25 0.07 0.04 0.01 0.03 0.01

Remarks


WSM U15, U15-3 Service No

Specificatios Items

Unit

Fuel tank

L US gal

11 10 Water & oil Q2 1 1

2

3

4

5

6

Main Specs JIS A8404 Bucket tooth slaggish

2

Decline of front attachment

3

Blade's declination

1

Eccentric amount from swing center

2

Distance to swing center

1

Distance to boom pin

2

Boom pin height

3

Min. clearance of bucket teeth to boom cylinder protector

4

Clearance of boom cylinder to shoe

1 2

Approach angle Distance to blade tip

3

Distance of crawler end to blade

4

Clearance of blade to weight

1

Crawler height

2

Max. crawler height

3

Clearance of swivel frame to crawler

4

Distance to idler center

5

Distance to sprocket center

6

Protrusion amount of upper frame to crawler outer end

1

Swivel frame height

2

Height to step

3

Height to seat

4

SIP (ISO)

L/R

U15-3 EU / U15(KTC)

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

73 2.87 0 0.00 0 0.00 -

mm

37

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

30.1 360 14.17 360 14.17

I-S-37

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 spocket

From swivel center

Include rubber mat


WSM U15, U15-3 Service No Q3 1 1

2

3 4 5 6

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 & ampare Travelling performance Travel motor block performance, L/R

Q4 1 1 2

Specificatios Items Engine performance Max. engine torque

1

Max, Traction force

2

3

4

1

3

Blade F1

4

Blade R1

1

Q5 1 1

Track shoe sag distance

1

Work performance Work amount 45 deg digging & side dump

Cycle time

2 1 2

Steel Rubber

2

3

F1 R1

2

2

F1

2

Fuel consumption

U15-3 EU / U15(KTC)

kgf·m N·m ft·lbs % rpm rpm rpm sec.

4.52 / 1750rpm 44.3 / 1750rpm 32.7 / 1750rpm

rpm

F2

Travel straightness

Unit

2300 < 2300 <

arm + buckt arm + buckt + dozer

+150 0

sec. sec.

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 1255 12.31 2767 637 6.25 1404 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%

10m distance

Blade up & down 10m 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

2600 >

1200

yd3/h m3/h

Calculated

Remarks

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

I-S-38

Load coefficiency=60%


WSM U15, U15-3 Service No 4

Specificatios Items

1

Boom lifting capacity

2

Arm digging force

3

Bucket digging force

4

Blade force

up

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

U15-3 EU / U15(KTC)

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

836, 824 8.5, 8.08 1903, 1817 1491, 1412 14.6, 13.85 3287, 3113

mm inch without side cutter with side cutter

Max. digging height radius

2

Max. dump height radius

3

Distance max. digging depth

4

Bucket bottom height at arm vertical

5 6

Bucket wrist angle Bucket bottom angle

7

Distance to bucket tooth tip

min.

8

Distance to bucket tooth tip

Bucket bottom horizontal

9

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

I-S-39

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

2.2 2.5 3.5 2.4 2.8 1.9 1.4 1.9

± ± ± ± ± ± ± ±

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 U15, U15-3 Service No

Specificatios Items

13 10 Item 7 to blade

12 Item 8 to blade Swivel, swing performance Swivel torque

2

L

R

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.

7

1 2 1

Swing speed

2

Reciprocating motion

8

Q7 1 1

Left / Right

Left Right Swivel R&L

Swing Lock L/R

Hydraulic performance Relief pressure setting

2

Swing

P1,P2

P3

3

U15-3 EU / U15(KTC)

Remarks

mm inch mm inch mm inch

11 Item 8 to sprocket center

Q6 1 1

Unit

P4

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

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

< < < < < < < >

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

21.6

+1.0 -0.5

MPa

220.0

+10 -5

bar

215.7

+9.8 -4.9

psi

3128.4

+142 -71

kgf/cm2

18.6

+1.0 -0.5

MPa

190.0

+10 -5

bar

186.3

+9.8 -4.9

psi

2701.8

+142 -71

kgf/cm2

3.9

+1.0 -0.5

MPa

40.0

+10 -5

bar

39.2

+9.8 -4.9

psi

568.8

+142 -71

kgf/cm2

Arm extend,slow/quick

At pump delivery port

2

1

Swivel brake relief pressure

kgf/cm2 MPa bar psi

At pump delivery port

3

1

Suction negative pressure

kgf/cm2 MPa bar psi

At -10 °C

I-S-40

50 ± 5 °C


WSM U15, U15-3 Service No

Specificatios Items

4

1

Boom relief pressure

5

1

Cylinder oil sealing capacity

6

7 8

Boom Arm

3

Bucket

4

Blade 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

2

up 2nd

3

down

4

Arm lever

Dump / crowd

5

Bucket lever

Dump / crowd

6

Swivel lever

L/R

7

Blade lever

Up / down

8

Travel lever

L/R F/R

9

Accelerator lever

10 Swing pedal

U15-3 EU / U15(KTC)

kgf/cm MPa bar psi 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

I-S-41

Remarks At +50 °C

2

2

1 2 3 1 1

Unit

25 0.98 15 0.59 10 0.39 25 0.98 3 0.5 0.3

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

Arm extend, bucket height 1m, 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 U15, U15-3 Service No 1

Specificatios Items

11 Safety lock lever, L&R

up

down

12 Travel Hi-Lo change

13 Service port pedal

L/R

14 Bonnet lifting force

15 TPSS lever (PP - version)

2

1

Boom lever stroke

2

up down

3

Arm lever stroke

4

Bucket lever stroke

5

Swivel, swing lever stroke

6

Blade lever up & down

7

Travel lever, F & R

L R

8

Accelerator lever stroke

9

Swing pedal stroke

10 Service port pedal stroke

Unit

U15-3 EU / U15(KTC)

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

2.0 19.6 14.5 3.0 29.4 21.7 5.0 49.0 36.2

± ± ± ± ± ±

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 ±

I-S-42

Remarks

1.0 9.8 7.2 1.0 9.8 7.2

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 U15, U15-3 Service No Q9 1 1

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

Front, Blade up

2

Front, Blade down

3

Rear, Blade up

4

Side (variable track)

2

1 2 3

Dynamic operation limit slope angle

STD arm Long arm Telescopic arm

3

1

Bucket limited load, static

Side

Extended

2

Forward

3

Retracted

4

4

1

Forward

Bucket limited Extended load, slow operation

2

Side

Forward

3

Retracted

4

Q10 1 1 2 3

Side

Side

Forward

Comfortability Noise level

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

Unit

U15-3 EU / U15(KTC)

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

180, 162< 1765, 1558< 397, 357< 190, 175< 1863, 1715< 419, 386< 105, 95< 1030, 931< 231, 209< 195, 175< 1912, 1715< 430, 386< 135, 121< 1324, 1186< 298, 267< 145, 130< 1422, 1274< 320, 287< 70, 63< 686, 619< 154, 139< 145, 130< 1422, 1274< 320, 287<

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

78> / 79> 92 >

I-S-43

Remarks

Front horizonal, bucket crowd arm tip end load swing straifht 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 U15, U15-3 Service

II.Machine Body A.Front attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-3 a. Pin, bush and shim installation . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-3 b. Instruction to press in the bushing . . . . . . . . . . . . . . . . . . . . . . . . II-S-7 c. Greasing points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-12

B.Upper Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-17 a. Swivel bearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . b. Travel lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . c. Accelarator lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . d. Dozer lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . e. Control link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . f. Swing pedal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . g. Service port pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . h. Pilot control valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i. Limit switch installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . j. Seat and Seat belt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k. Wrist rest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . l. Canopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . m. Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

II-S-17 II-S-18 II-S-21 II-S-23 II-S-24 II-S-25 II-S-26 II-S-27 II-S-29 II-S-30 II-S-31 II-S-32 II-S-33

C.Undercarrige . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-34 a. Track tension device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-34 b. Track Roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-S-36

II-S-1


WSM U15, U15-3 Service

A.Front attachment a. Pin, bush and shim installation (1) Swing cylinder, swing bracket, boom 51

52

50

53

43 42 41 72 71

40

70 60

61 62

21 22

20

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

10

32

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

36

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

33

Swing bracket - Swing cylinder

Q’ty

RB2386664 0117361080 0257450100

Swing bracket - Swing cylinder Code No.

31

1 2 1

Part

No.

Remarks

60 φ 35 (φ 1.38in) 61 62

Pin Bolt Nut

Boom - arm cylinder Code No.

Q’ty

RB2386654 0117361080 0257450100

II-S-3

1 2 1

Part Pin Bolt Nut

No.

Remarks

70 φ 30 (φ 1.18in) 71 72


WSM U15, U15-3 Service

(2) Arm, bucket link

114 111

125 124 123

90

121

92 91

100

126 122

102 101

110 120 112113

83 82

133 132

81

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-4

No.

Remarks

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

84


WSM U15, U15-3 Service

(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

2

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

1

Pin

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

1

Pin

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

2

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 - extention blade Code No.

Q’ty

RA21121441

2

Pin

0552551000 RG1088948

2 2

Split pin Pin

II-S-5

Part

No.

Remarks

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


WSM U15, U15-3 Service

(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

} 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

II-S-6

Apply grease on both surface.

Double nut type


WSM U15, U15-3 Service

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 15° 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

Bush

5

5

3 15

Dust seal

C

15

0. 5

3

Dust seal

Bush direction

C

0.

5

Bush direction

II-S-7


WSM U15, U15-3 Service

(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 ~ 0.04â&#x20AC;?) thick shim to have the clearance smaller than 0.5 mm(0.02â&#x20AC;?). 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

II-S-8


WSM U15, U15-3 Service

(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)

1

(2)

1Bush 2Dust seal 3Collar

(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

U15, U15-3

U20-3, U25-3

-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.

II-S-9

+0.07 +0.04

( o 2.36 +0.006 )

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

-

Remarks


WSM U15, U15-3 Service

(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 data is just for your reference. Swing bracket looseness measuring procedure photos

II-S-10


WSM U15, U15-3 Service

(6) Service tip to ease customer complain Front slaggishness caused by pin-bushing worn-out largely depends on the following facters. 1. Maintenance: 2. 3. 4. 5.

6.

Daily maintenance, frequent applying of grease to renew, proper type of grease. Attachment installed: Weight of front attachment more than expected affects the excessive wear of pin and bushing. Application and operation:Heavy load digging operation and high rate of vibration work, such as breaker also causes the abrasive wear than ordinary digging work. Job site and strage: Dust, sand, moisture, salt or chemical acid accelerate the surface abrasive and corrosion. Total operation hours: Operating hour is the basic factor to evaluate the wear. Bushing wearcurve is basically depended on the operation hours. And varies one by one according to the ratio of oparating condition, attachment weight, application and maintenance level mentioned-above. Service limit: Allowable service limit to all pins and bushings is 1.0 mm (0.039 in) wear from the new diameter size.

II-S-11


WSM U15, U15-3 Service

c. Greasing points 1) Keep applying grease until it comes out of the circumference at the other end surface of each rotating part. 2) Apply grease to the end surfaces of all the rotating parts and their related shims.

A-type: Straight type (06611-15010)

B-type: 67° (06616-25010)

C-type: 90° (06616-35010)

(3)

(2)

(1) (4)

Turn the swivel bearing every 90 degrees and lubricate the balls and tooth faces (8 locations in total). If already disassembled, the balls and tooth faces may be lubricated before being reassembled.

(5)

(5) (3)

(4)

(5)

(8)

(5)

(5)

(6) (5) (6) (6) (5) (7) (1) View from the front

(5) A - type (Boss - greasing)

(2) Swing cylinder, bottom

(6) A - type (Pin - greasing)

(3) Swivel bearing, ball

(7) B - type (Boss - greasing)

(4) Swivel bearing, teeth

(8) C - type (Boss - greasing)

II-S-12


WSM U15, U15-3 Service

(5)

(7)

(7)

(5) A - type (Boss - greasing)

(7)

(7) B - type (Boss - greasing)

II-S-13


WSM U15, U15-3 Service

Stopper bolt 4 Thread adhesive applied in 4 locations

4 5

1

3

2

Set-bolt 6 2 locations at the back of machine

Qâ&#x20AC;&#x2122;ty (1) Frame (Truck, center)

1

(2) Frame (Truck, L)

1

(3) Frame (Truck, R)

1

(4) Bolt, stopper

4

(5) Spring washer (6) Apply grease on all surfaces of truck frame L & R as shown by hatching lines.

4

II-S-14


WSM U15, U15-3 Service

Track frame (left) detached

Track Width Variable Structure

(1)

(1) Advanced Double Sheathed-box Structure

1. Remove the two 9bolts (stopper) when detaching the track frame (right & left) from the center one. 2. Apply grease over the stretching part of track frame (right & left) when installing. (Use one which equivalent to Dynamax EP2)

3. Tightening torque for the plate: 48.1~55.9 N·m (4.9~5.7 kgf·m) 35.1~41.1 ft·lbf *Use screw lock agent Stopper bolt

Across flats length

Model

Code No.

Bolt

Tightening torque

Tip-end dia. ø [mm]

M12 x 1.25 (7T) K008-3 U10-3 U15, U15-3 KX41-3V

8 +- 0.2

69191-2129-3

25 +- 0.5 11 +- 0.3

M12x1.25

0.6

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

10

17

367.7 ~ 431.5 N·m (37.5 ~ 44.0 kgf·m) 271.2 ~ 318.2 ft·lbf

17

27

0 10 -0.2

(1)

M20 x 1.5 U17 U17-3 U17-3α

13

41

RA231-21292 0 17-0.2

27 M20x1.5

II-S-15


WSM U15, U15-3 Service

(1)

(1) View from the bottom of the track frame (2) Track cylinder

(2)

(3) To track cylinder rod side

(3)

(4) To track cylinder bottom side (5) Keep the clearance more than 1 mm (0.04“) and less than 10 mm (0.4“) between the plate and hose after adjusting the adaptor’s angle. (6) Fix the hose with vyneel clamp. Keep the clearance more than 10 mm (0.4“) adjusting the track cylinder rod side.

(4)

(6)

(5)

OLD PART

Q’ty 010 Frame,track center

1

020 Frame,track LH

1

030 Frame,track RH

1

040 Cover, motor

2

050 Bolt,flange

6

060 Pin

2

070 Bolt, stopper

2

080 Washer,spring

2

090 Cover, bottom

1

100 Bolt

4

110 Bolt, stopper

4

120 Washer,spring

4

130

140

040 050

RA228-804-10

030 110 120

080 070

050 040

060

020

070 080 060

010

090 100

II-S-16

RA228-022-12


WSM U15, U15-3 Service

B.Upper Structure a. Swivel bearing (1) B

(2)

Pass between the hoses (selector valve - SJ). Selector valve

(5) Horizontal

Swing Tooth Ball cylinder face

A

Front

(6)

Direction of the swing cylinder's grease adaptor Machine front

(4) (3)

1

(1) Machine rear (2) Marked “S“ (Soft zone of inside gear)

3

2

(3) Machine front (4) Grease supply port (Must be faced to the swivel frame hole) (5) The ball inlet (Soft zone of outer race) (6) Grease supply to teeth

1. Innerring soft zone: S mark. • Set “S” mark at its right position. 2. Outer-ring soft zone: Ball inlet • This soft zone should be at its left sode. 3. Align the grease nipple hole of the swivel frame with the nipple on the bearing. A 4. Swivel Bearing Tightening • Apply Locktite #271 on the bolts. • Tightening torque: 103 ~ 117.7 N·m 10.5 ~ 12 kgf·m 75.9 ~ 86.8 ft·lbs • Apply grease to the entire surface of the bearing teeth uniformly. • Mounting bolts: Truck frame side, 01138-51230, 18 pcs Swivel frame side, 01138-51230, 19 pcs

II-S-17


WSM U15, U15-3 Service

b. Travel lever To-and-fro differences of the right and left travel levers Lever position To-and-fro difference ( ) Forward and Within 10 mm (0.39 in.) each backward ends Neutral

Travel lever adjustment Top view

Link (MB) RA221-6561Δ

Within 5 mm (0.21 in.)

Parallel

Grip-to-grip clearance 2

Front view

Set up with the end groove vertical.

5

Grip 67156-1833

1. Adjustments of lever to neutral position Mounting direction and angle

Mount the levers as shown in the illustration.

Improper position ↓ Improper control

2. Travel lever rota- The levers must tion return to the neutral position promptly after operation.

Improper return ↓ Improper action

3. Travel lever adjustments 1) Forward/ → 5 mm (max.) Backward (0.2 in) tolerance of left and right levers 2) Clearance of → 5 ~ 25 mm (EU) (0.2 ~ 0.98 in) left and right 5 ~ 14 mm (KTC) levers (0.2 ~ 0.55 in)

Levers not aligned ↓ Contact between levers Improper action

4. Grip mounting Mounting direction and angle

Mount the grips securely. The grips must be in backward/forward directions.

Improper assembly ↓ Grips rotate

5. Check items after mounting

The valve spool must operate full stroke. The valve spool must operate smoothly.

Improper action ↓ Increase in required operational power

(34.5) Lever (travel, left) RA221-6531 Lever (travel, right) RA221-6532

Stopper bolt details (7) (9.5) Front

II-S-18


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Kubota u15 3 micro excavator service repair manual  
Kubota u15 3 micro excavator service repair manual  
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