Hyundai R320LC-7 Excavator Electric Service Manual

Hyundai R320LC-7 Crawler Excavator Workshop Service Manual

Engine: ● The excavator is typically equipped with a powerful diesel engine. ● The exact specifications of the engine may vary, but it usually has a displacement of around 8.8 liters.

Hyundai R320LC-7 Crawler Excavator Service Manual

SECTION 1 GENERAL

Group 1 Safety Hints Group 2 Specifications

1-1 1-9

1-1

SECTION 1 GENERAL GROUP 1 SAFETY FOLLOW SAFE PROCEDURE Unsafe work practices are dangerous. Understand service procedure before doing work; Do not attempt shortcuts.

WEAR PROTECTIVE CLOTHING Wear close fitting clothing and safety equipment appropriate to the job.

13031GE01

WARN OTHERS OF SERVICE WORK Unexpected machine movement can cause serious injury.

Before performing any work on the excavator, attach a 「Do Not Operate」tag on the right side control lever.

WARN DO NOT OPERATE

13031GE02

USE HANDHOLDS AND STEPS Falling is one of the major causes of personal injury.

When you get on and off the machine, always maintain a three point contact with the steps and handrails and face the machine. Do not use any controls as handholds.

Never jump on or off the machine. Never mount or dismount a moving machine.

Be careful of slippery conditions on platforms, steps, and handrails when leaving the machine.

13031GE03

1-1

PREPARE FOR EMERGENCIES Be prepared if a fire starts.

Keep a first aid kit and fire extinguisher handy.

Keep emergency numbers for doctors, ambulance service, hospital, and fire department near your telephone.

13031GE04

PROTECT AGAINST FLYING DEBRIS Guard against injury from flying pieces of metal or debris; Wear goggles or safety glasses.

13031GE05

PROTECT AGAINST NOISE Prolonged exposure to loud noise can cause impairment or loss of hearing.

Wear a suitable hearing protective device such as earmuffs or earplugs to protect against objectionable or uncomfortable loud noises.

13031GE06

AVOID POWER LINES Serious injury or death can result from contact with electric lines.

Never move any part of the machine or load closer to electric line than 3m(10ft) plus twice the line insulator length.

13031GE07

1-2

KEEP RIDERS OFF EXCAVATOR Only allow the operator on the excavator. Keep riders off.

Riders on excavator are subject to injury such as being struck by foreign objects and being thrown off the excavator. Riders also obstruct the operator's view resulting in the excavator being operated in an unsafe manner.

13031GE08

MOVE AND OPERATE MACHINE SAFELY Bystanders can be run over. Know the location of bystanders before moving, swinging, or operating the machine.

Always keep the travel alarm in working condition. warns people when the excavator starts to move.

It

Use a signal person when moving, swinging, or operating the machine in congested areas. Coordinate hand signals before starting the excavator.

13031GE09

OPERATE ONLY FORM OPERATOR'S SEAT Avoid possible injury machine damage. Do not start engine by shorting across starter terminals.

NEVER start engine while standing on ground. engine only from operator's seat.

Start

13031GE26

PARK MACHINE SAFELY Before working on the machine: ·Park machine on a level surface. ·Lower bucket to the ground. ·Turn auto idle switch off. ·Run engine at 1/2 speed without load for 2 minutes. ·Turn key switch to OFF to stop engine. Remove key from switch. ·Move pilot control shutoff lever to locked position. ·Allow engine to cool.

1-3

SUPPORT MACHINE PROPERLY Always lower the attachment or implement to the ground before you work on the machine. If you must work on a lifted machine or attachment, securely support the machine or attachment.

Do not support the machine on cinder blocks, hollow tiles, or props that may crumble under continuous load.

Do not work under a machine that is supported solely by a jack. Follow recommended procedures in this manual.

13031GE10

SERVICE COOLING SYSTEM SAFELY Explosive release of fluids from pressurized cooling system can cause serious burns.

Shut off engine. Only remove filler cap when cool enough to touch with bare hands.

13031GE11

HANDLE FLUIDS SAFELY-AVOID FIRES Handle fuel with care; It is highly flammable. Do not refuel the machine while smoking or when near open flame or sparks. Always stop engine before refueling machine.

Fill fuel tank outdoors.

13031GE12

Store flammable fluids away from fire hazards. Do not incinerate or puncture pressurized containers.

Make sure machine is clean of trash, grease, and debris.

Do not store oily rags; They can ignite and burn spontaneously.

13031GE13

1-4

BEWARE OF EXHAUST FUMES Prevent asphyxiation. Engine exhaust fumes can cause sickness or death.

If you must operate in a building, be positive there is adequate ventilation. Either use an exhaust pipe extension to remove the exhaust fumes or open doors and windows to bring enough outside air into the area.

REMOVE PAINT BEFORE WELDING OR HEATING Avoid potentially toxic fumes and dust.

Hazardous fumes can be generated when paint is heated by welding, soldering, or using a torch.

Do all work outside or in a well ventilated area.

Dispose of paint and solvent properly.

Remove paint before welding or heating: · If you sand or grind paint, avoid breathing the dust.

Wear an approved respirator. · If you use solvent or paint stripper, remove stripper with soap and water before welding. Remove solvent or paint stripper containers and other flammable material from area. Allow fumes to disperse at least 15 minutes before welding or heating.

13031GE14

ILLUMINATE WORK AREA SAFELY Illuminate your work area adequately but safely. Use a portable safety light for working inside or under the machine. Make sure the bulb is enclosed by a wire cage. The hot filament of an accidentally broken bulb can ignite spilled fuel or oil.

13031GE15

1-5

SERVICE MACHINE SAFELY Tie long hair behind your head. Do not wear a necktie, scarf, loose clothing or necklace when you work near machine tools or moving parts. If these items were to get caught, severe injury could result.

Remove rings and other jewelry to prevent electrical shorts and entanglement in moving parts.

13031GE16

STAY CLEAR OF MOVING PARTS Entanglements in moving parts can cause serious injury.

To prevent accidents, use care when working around rotating parts.

13031GE17

AVOID HIGH PRESSURE FLUIDS Escaping fluid under pressure can penetrate the skin causing serious injury.

Avoid the hazard by relieving pressure before disconnecting hydraulic or other lines. Tighten all connections before applying pressure.

Search for leaks with a piece of cardboard. hands and body from high pressure fluids.

Protect 13031GE18

If an accident occurs, see a doctor immediately. Any fluid injected into the skin must be surgically removed within a few hours or gangrene may result.

13031GE19

1-6

AVOID HEATING NEAR PRESSURIZED FLUID LINES Flammable spray can be generated by heating near pressurized fluid lines, resulting in severe burns to yourself and bystanders. Do not heat by welding, soldering, or using a torch near pressurized fluid lines or other flammable materials.

Pressurized lines can be accidentally cut when heat goes beyond the immediate flame area. Install fire resisting guards to protect hoses or other materials.

13031GE20

PREVENT BATTERY EXPLOSIONS Keep sparks, lighted matches, and flame away from the top of battery. Battery gas can explode.

Never check battery charge by placing a metal object across the posts. Use a volt-meter or hydrometer.

Do not charge a frozen battery; It may explode. Warm battery to 16° C(60° F).

13031GE21

PREVENT ACID BURNS Sulfuric acid in battery electrolyte is poisonous. It is strong enough to burn skin, eat holes in clothing, and cause blindness if splashed into eyes.

Avoid the hazard by: 1. Filling batteries in a well-ventilated area.

2. Wearing eye protection and rubber gloves.

3. Avoiding breathing fumes when electrolyte is added.

4. Avoiding spilling of dripping electrolyte.

5. Use proper jump start procedure.

If you spill acid on yourself: 1. Flush your skin with water.

2. Apply baking soda or lime to help neutralize the acid.

3. Flush your eyes with water for 10-15 minutes. Get medical attention immediately.

If acid is swallowed: 1. Drink large amounts of water or milk.

2. Then drink milk of magnesia, beaten eggs, or vegetable oil.

3. Get medical attention immediately.

13031GE22

1-7

USE TOOLS PROPERLY Use tools appropriate to the work. Makeshift tools, parts, and procedures can create safety hazards.

Use power tools only to loosen threaded tools and fasteners.

For loosening and tightening hardware, use the correct size tools. DO NOT use U.S. measurement tools on metric fasteners. Avoid bodily injury caused by slipping wrenches.

Use only recommended replacement parts.(See Parts catalogue.)

13031GE23

DISPOSE OF FLUIDS PROPERLY Improperly disposing of fluids can harm the environment and ecology. Before draining any fluids, find out the proper way to dispose of waste from your local environmental agency.

Use proper containers when draining fluids. Do not use food or beverage containers that may mislead someone into drinking from them.

DO NOT pour oil into the ground, down a drain, or into a stream, pond, or lake. Observe relevant environmental protection regulations when disposing of oil, fuel, coolant, brake fluid, filters, batteries, and other harmful waste.

13031GE24

REPLACE SAFETY SIGNS Replace missing or damaged safety signs. See the machine operator's manual for correct safety sign placement.

13031GE25

LIVE WITH SAFETY Before returning machine to customer, make sure machine is functioning properly, especially the safety systems. Install all guards and shields.

1-8

GROUP 2 SPECIFICATIONS 1. MAJOR COMPONENT Fuel tank

Tool box

Hydraulic oil tank

Main pump

Engine Radiator

Tooth

Arm

Bucket

Turning joint

Arm cylinder Boom

Bucket cylinder

Connecting link

Side cutter

Swing motor

Boom cylinder

Idler

Main control valve

Cab

Precleaner

Carrier roller

Connecting rod

Track roller

Battery

Muffler

Sprocket

Track

Oil cooler

Counterweight

Travel motor

29072SP00

1-9

2. SPECIFICATIONS

I(I’)

H

F

G

E

C

D

J

M

K

N B(L)

A

29072SP01

Description

Unit

Specification

Operating weight

kg(lb)

32200(70990)

Bucket capacity(PCSA heaped), standard

m (yd )

1.44(1.88)

3

3

Overall length

A

10980(36' 0")

Overall width, with 600mm shoe

B

3280(10' 9")

Overall height

C

3380(11' 1")

Superstructure width

D

2980( 9' 9")

Overall height of cab

E

3110(10' 2")

Ground clearance of counterweight

F

1215( 3' 12")

Engine cover height

G

2580( 8' 6")

Minimum ground clearance

H

Rear-end distance

I

3265(10' 9")

Rear-end swing radius

I'

3330(10' 11")

Distance between tumblers

J

4030(13' 3")

Undercarriage length

K

4940(16' 2")

Undercarriage width

L

3280(10' 9")

Track gauge

M

2680( 8' 10")

Track shoe width, standard

N

600(23.6")

Travel speed(Low/high)

mm(ft-in)

500( 1' 8")

km/hr(mph)

3.2/5.4(2.0/3.4)

Swing speed

rpm

9.1

Gradeability

Degree(%)

35(70)

Ground pressure(600mm shoe)

kgf/cm2(psi)

0.62(8.82)

1-10

3. WORKING RANGE A A'

B B' C

E

D

F

8ft 36072SP04

6.15m(20' 2")Boom

6.45m(21' 2") Arm

Description

3.2m(10' 6")Arm 4.05m(13' 3")Arm

2.2m(7' 3")Arm

Max digging reach

A 10330mm (33'11") 10550mm (34' 7") 11140mm (36' 7") 11950mm (39' 2")

10020mm (32'10")

Max digging reach on ground

A' 10110mm (33' 2") 10330mm (33'11") 10940mm (35'11") 11760mm (38' 7")

9800mm (32' 2")

Max digging depth

B

6370mm (20'11") 6710mm (22' 0") 7370mm (24' 2") 8220mm (26'12")

6160mm (20' 3")

Max digging depth (8ft level)

B'

6160mm (20' 3") 6470mm (21' 3") 7210mm (23' 8") 8080mm (26' 6")

5950mm (19' 6")

Max vertical wall digging depth C

5980mm (19' 7") 5920mm (19' 5") 6360mm (20'10") 7260mm (23'10")

5710mm (18' 9")

Max digging height

D 10220mm (33' 6") 10170mm (33' 4") 10310mm (33'10") 10710mm (35' 2")

9940mm (32' 7")

Max dumping height

E

7050mm (23' 2") 7050mm (23' 2") 7240mm (23' 9") 7630mm (25' 0")

6780mm (22' 3")

Min swing radius

F

4700mm (15' 5") 4500mm (14' 9") 4470mm (14' 8") 4470mm (14' 8")

4520mm (14'10")

177.5[193.6] kN

177.5[193.6] kN

177.5[193.6] kN

SAE 18100[19750] kgf 18100[19750] kgf 18100[19750] kgf 18100[19750] kgf

18100[19750] kgf

39900[43530] lbf 39900[43530] lbf 39900[43530] lbf 39900[43530] lbf

39900[43530] lbf

198.1[216.1] kN

198.1[216.1] kN

198.1[216.1] kN

ISO 20200[22040] kgf 20200[22040] kgf 20200[22040] kgf 20200[22040] kgf

20200[22040] kgf

44530[48580] lbf 44530[48580] lbf 44530[48580] lbf 44530[48580] lbf

44530[48580] lbf

185.3[202.2] kN

112.8[123.0] kN

185.3[202.2] kN

SAE 18900[20620] kgf 17200[18760] kgf 13500[14730] kgf 11500[12550] kgf

18900[20620] kgf

41670[45460] lbf 37920[41370] lbf 29760[32470] lbf 25350[27650] lbf

41670[45460] lbf

191.2[208.6] kN

115.7[126.2] kN

191.2[208.6] kN

ISO 19500[21270] kgf 17800[19420] kgf 13900[15160] kgf 11800[12870] kgf

19500[21270] kgf

42990[46900] lbf 39240[42810] lbf 30640[33430] lbf 26010[28370] lbf

42990[46900] lbf

Bucket digging force

Arm crowd force

2.2m(7' 3")Arm

2.5m(8' 2")Arm

177.5[193.6] kN

198.1[216.1] kN

168.7[184.0] kN

174.6[190.4] kN

[ ] : Power boost

1-11

177.5[193.6] kN

198.1[216.1] kN

132.4[144.4] kN

136.3[148.7] kN

4. WEIGHT R320LC-7

Item

kg

lb

Upperstructure assembly

14520

31590

Main frame weld assembly

2680

5900

Engine assembly

590

1300

Main pump assembly

180

380

Main control valve assembly

200

440

Swing motor assembly

310

680

Hydraulic oil tank assembly

230

490

Fuel tank assembly

210

450

Counterweight

6200

13670

Cab assembly

310

680

Radiator total assy

280

620

Lower chassis assembly

11500

25770

Track frame weld assembly

3970

8750

Swing bearing

410

900

Travel motor assembly

390

860

Turning joint

50

110

Tension cylinder

210

450

Idler

250

540

Sprocket

80

170

Carrier roller

40

80

Track roller

60

120

Track-chain assembly(600mm standard triple grouser shoe)

1860

4100

Front attachment assembly(6.45m boom, 3.2m arm, 1.44m3 PCSA heaped bucket)

6110

13470

6.45m boom assembly

2590

5710

3.2m arm assembly

1140

2510

1.44m3 PCSA heaped bucket

1110

2450

Boom cylinder assembly

280

620

Arm cylinder assembly

380

840

Bucket cylinder assembly

270

570

Bucket control linkage assembly

370

820

1-12

5. LIFTING CAPACITIES 1) 6.15m(20' 2") boom, 2.2m(7' 3") arm equipped with 1.44m3(PCSA heaped) bucket and 600mm(24") triple grouser shoe.

·

·

: Rating over-front

: Rating over-side or 360 degree

Load radius Load point height

3.0m(10.0ft)

4.5m(15.0ft)

At max. reach

6.0m(20.0ft)

7.5m(25.0ft)

Capacity

Reach m(ft)

7.5m (25.0ft) 6.0m (20.0ft) 4.5m (15.0ft) 3.0m (10.0ft) 1.5m (5.0ft) Ground Line -1.5m (-5.0ft) -3.0m (-10.0ft) -4.5m (-15.0ft)

kg lb kg lb kg lb kg lb kg lb kg lb kg lb kg lb kg lb

Note

1. Lifting capacity are based on SAE J1097 and ISO 10567.

2. Lifting capacity of the ROBEX series does not exceed 75% of tipping load with the machine on firm, level ground or 87% of full hydraulic capacity.

3. The load point is a hook located on the back of the bucket.

4. *indicates load limited by hydraulic capacity.

*16010 *35300 *21280 *46910 *16550 *36490

*16010 *35300 *21280 *46910 *16550 *36490

*11210 *24710 *14450 *31860 *16730 *36880 *17390 *38340 *16940 *37350 *15440 *34040 *12170 *26830

*11210 *24710 12090 26650 11300 24910 11020 24290 11010 24270 11200 24690 11630 25640

*7760 *17110 *8910 *19640 *10390 *22910 *11700 *25790 11570 25510 11480 25310 *11470 *25290

*7760 *17110 8260 18210 7760 17110 7330 16160 7070 15590 7000 15430 7100 15650

1-13

*7460 *16450 *7850 *17310 8500 18740 8250 18190 8080 17810 8040 17730

5770 12720 5630 12410 5400 11900 5180 11420 5030 11090 5000 11020

*6910 *15230 *6960 *15340 6180 13620 5810 12810 5780 12740 6090 13430 6900 15210 *7700 *16980

5680 12520 4510 9940 3920 8640 3650 8050 3610 7960 3800 8380 4330 9550 5530 12190

7.69 (25.2) 8.61 (28.2) 9.16 (30.1) 9.39 (30.8) 9.35 (30.7) 9.02 (29.6) 8.37 (27.5) 7.29 (23.9)

2) 6.45m(21' 2") boom, 2.2m(7' 3") arm equipped with 1.44m3(PCSA heaped) bucket and 600mm (24") triple grouser shoe.

Load radius Load point height

3.0m(10.0ft)

4.5m(15.0ft)

At max. reach

6.0m(20.0ft)

7.5m(25.0ft)

Capacity

Reach m(ft)

7.5m (25.0ft) 6.0m (20.0ft) 4.5m (15.0ft) 3.0m (10.0ft) 1.5m (5.0ft) Ground Line -1.5m (-5.0ft) -3.0m (-10.0ft) -4.5m (-15.0ft)

kg lb kg lb kg lb kg lb kg lb kg lb kg lb kg lb kg lb

*13660 *30120 *20480 *45150 *16460 *36290

*13660 *30120 *20480 *45150 *16460 *36290

*11460 *25260

*11460 *25260

*17110 *37720 *16560 *36510 *15160 *33420 *12360 *27250

10680 23550 10730 23660 10930 24100 11350 25020

*7600 *16760 *8830 *19470 *10320 *22750 *11580 *25530 11310 24930 11240 24780 11360 25040

*7600 *16760 8070 17790 7530 16600 7090 15630 6840 15080 6780 14950 6890 15190

*7100 *15650 *7610 *16780 8350 18410 8080 17810 7910 17440 7870 17350

5710 12590 5520 12170 5260 11600 5030 11090 4870 10740 4830 10650

*6570 *14480 6450 14220 5730 12630 5400 11900 5370 11840 5650 12460 6350 14000 *7290 *16070

5120 11290 4110 9060 3590 7910 3350 7390 3310 7300 3480 7670 3940 8690 4950 10910

8.07 (26.5) 8.95 (29.4) 9.47 (31.1) 9.70 (31.8) 9.66 (31.7) 9.34 (30.6) 8.72 (28.6) 7.70 (25.3)

3) 6.45m(21' 2") boom, 2.5m(8' 2") arm equipped with 1.44m3(PCSA heaped) bucket and 600mm (24") triple grouser shoe.

Load radius Load point height 7.5m (25.0ft) 6.0m (20.0ft) 4.5m (15.0ft) 3.0m (10.0ft) 1.5m (5.0ft) Ground Line -1.5m (-5.0ft) -3.0m (-10.0ft) -4.5m (-15.0ft)

kg lb kg lb kg lb kg lb kg lb kg lb kg lb kg lb kg lb

3.0m(10.0ft)

4.5m(15.0ft)

6.0m(20.0ft)

At max. reach 7.5m(25.0ft)

9.0m(30.0ft)

Capacity

Reach m(ft)

*14220 *31350 *21440 *47270 *17640 *38890

*14220 *31350 *21440 *47270 *17640 *38890

*10750 *23700 *14010 *30890 *16290 *35910 *16990 *37460 *16670 *36750 *15460 *34080 *12990 *28640

*10750 *23700 11740 25880 10880 23990 10590 23350 10590 23350 10760 23720 11140 24560

*8420 *18560 *9940 *21910 *11280 *24870 11260 24820 11150 24580 11240 24780 *9520 *20990

8120 17900 7550 16640 7070 15590 6790 14970 6700 14770 6770 14930 7060 15560

1-14

*6750 *14880 *7310 *16120 *8080 *17810 8060 17770 7860 17330 7790 17170

5750 12680 5540 12210 5260 11600 5000 11020 4820 10630 4760 10490

5970 13160

*6180 4840 *13620 10670 6170 3920 13600 8640 5500 3430 12130 7560 5190 3190 11440 7030 3680 5150 3150 8110 11350 6940 5390 3300 11880 7280 6010 3700 13250 8160 *7290 4590 *16070 10120 *6680 *6680 *14730 *14730

8.34 (27.4) 9.19 (30.2) 9.70 (31.8) 9.92 (32.5) 9.88 (32.4) 9.57 (31.4) 8.97 (29.4) 7.98 (26.2) 6.42 (21.1)

4) 6.45m(21' 2") boom, 3.2m(10' 6") arm equipped with 1.44m3(PCSA heaped) bucket and 600mm (24") triple grouser shoe.

Load radius Load point height

1.5m(5.0ft)

At max. reach

3.0m(10.0ft) 4.5m(15.0ft) 6.0m(20.0ft) 7.5m(25.0ft) 9.0m(30.0ft)

Capacity

Reach m(ft)

*4880 *4880 7.5m kg (25.0ft) lb *10760 *10760 *6000 5890 6.0m kg (20.0ft) lb *13230 12990 *7490 *7490 *6640 5640 *5070 4.5m kg (15.0ft) lb *16510 *16510 *14640 12430 *11180 *12430 12180 *9090 7700 *7490 5320 6140 3.0m kg *27400 26850 *20040 16980 *16510 11730 13540 (10.0ft) lb 1.5m kg *15210 11110 *10610 7150 8090 5020 5970 (5.0ft) lb *33530 24490 *23390 15760 17840 11070 13160 Ground kg *9720 *9720 *16620 10580 11260 6780 7830 4790 5830 Line lb *21430 *21430 *36640 23320 24820 14950 17260 10560 12850 -1.5m kg *10800 *10800 *13710 *13710 *16830 10440 11060 6600 7700 4660 (-5.0ft) lb *23810 *23810 *30230 *30230 *37100 23020 24380 14550 16980 10270 -3.0m kg *14530 *14530 *18410 *18410 *16100 10510 11050 6600 7700 4670 (-10.0ft) lb *32030 *32030 *40590 *40590 *35490 23170 24360 14550 16980 10300 -4.5m kg *20220 *20220 *14270 10790 *10560 6780 (-15.0ft) lb *44580 *44580 *31460 23790 *23280 14950 -6.0m kg *10450 *10450 (-20.0ft) lb *23040 *23040

*5500 4200 9.06 *12130 9260 (29.7) 5510 3470 9.84 12150 7650 (32.3) 3980 4960 3060 10.31 8770 10930 6750 (33.8) 3830 4690 2850 10.52 8440 10340 6280 (34.5) 3670 4640 2800 10.48 8090 10230 6170 (34.4) 3540 4810 2900 10.19 7800 10600 6390 (33.4) 5280 3200 9.63 11640 7050 (31.6) 6240 3840 8.74 13760 8470 (28.7) *6880 5250 7.37 *15170 11570 (24.2)

5) 6.45m(21' 2") boom, 4.05m(13' 3") arm equipped with 1.44m3(PCSA heaped) bucket and 600mm (24") triple grouser shoe.

Load radius Load point height

1.5m(5.0ft)

3.0m(10.0ft) 4.5m(15.0ft) 6.0m(20.0ft) 7.5m(25.0ft) 9.0m(30.0ft)

At max. reach Capacity

Reach m(ft)

7.5m kg *4760 3440 10.00 (25.0ft) lb *10490 7580 (32.8) 6.0m kg *4160 *4160 4700 2890 10.71 (20.0ft) lb *9170 *9170 10360 6370 (35.1) 4.5m kg *5710 *5710 *5320 4030 4270 2570 11.13 (15.0ft) lb *12590 *12590 *11730 8880 9410 5670 (36.5) 3.0m kg *16820 *16820 *10330 *10330 *7880 *7880 *6640 5380 *5940 3830 4050 2390 11.32 *37080 *37080 *22770 *22770 *17370 *17370 *14640 11860 *13100 8440 8930 5270 (37.1) (10.0ft) lb *9930 *9930 *13560 11450 *9590 7260 *7630 5030 5940 3630 4000 2340 11.29 1.5m kg (5.0ft) lb *21890 *21890 *29890 25240 *21140 16010 *16820 11090 13100 8000 8820 5160 (37.0) Ground kg *10280 *10280 *15690 10640 *10950 6770 7790 4730 5750 3460 4120 2410 11.03 Line lb *22660 *22660 *34590 23460 *24140 14930 17170 10430 12680 7630 9080 5310 (36.2) -1.5m kg *9390 *9390 *12710 *12710 *16580 10290 10950 6490 7580 4540 5630 3350 4450 2620 10.52 (-5.0ft) lb *20700 *20700 *28020 *28020 *36550 22690 24140 14310 16710 10010 12410 7390 9810 5780 (34.5) -3.0m kg *12370 *12370 *16100 *16100 *16450 10230 10840 6400 7500 4480 5620 3340 5110 3060 9.72 (-10.0ft) lb *27270 *27270 *35490 *35490 *36270 22550 23900 14110 16530 9880 12390 7360 11270 6750 (31.9) -4.5m kg *15810 *15810 *20640 *20640 *15320 10390 10930 6470 7590 4550 *6410 3940 8.53 (-15.0ft) lb *34860 *34860 *45500 *45500 *33770 22910 24100 14260 16730 10030 *14130 8690 (28.0) -6.0m kg *18370 *18370 *12770 10780 *9220 6760 *6150 6120 6.71 (-20.0ft) lb *40500 *40500 *28150 23770 *20330 14900 *13560 13490 (22.0)

1-15

6. BUCKET SELECTION GUIDE 1) GENERAL BUCKET

0.9m3 PCSA heaped bucket

Capacity

1.14m3 PCSA heaped bucket

※1.44m3 PCSA heaped bucket

Without With side cutter side cutter

Weight

CECE heaped

0.9m3 (1.18yd3)

0.8m3 (1.05yd3)

950mm (37.4")

1070mm (42.2")

870kg (1920lb)

1.14m3 (1.49yd3)

1.0m3 (1.31yd3)

1140mm (44.9")

1260mm (49.6")

980kg (2160lb)

※1.44m3 (1.88yd3)

1.25m3 (1.63yd3)

1380mm (54.3")

1500mm (59.1")

1110kg (2450lb)

1.74m3 (2.28yd3)

1.5m3 (1.96yd3)

1610mm (63.4")

1730mm (68.1")

1230kg (2710lb)

2.10m3 (2.75yd3)

1.8m3 (2.35yd3)

1900mm (74.8")

2020mm (79.5")

1370kg (3020lb)

2.2m arm (7' 3")

2.5m arm (8' 2")

3.2m arm (10' 6")

※ : Standard bucket

Applicable for materials with density of 2000kgf/m3 (3370lbf/yd3) or less Applicable for materials with density of 1600kgf/m3 (2700lbf/yd3) or less Applicable for materials with density of 1100kgf/m3 (1850lbf/yd3) or less

1-16

2.10m3 PCSA heaped bucket

Recommendation 6.45m (21' 2") boom

Width

PCSA heaped

1.74m3PCSA heaped bucket

6.15m (20' 2") boom 4.05m arm (13' 3")

2.2m arm (7' 3")

2) ROCK AND HEAVY DUTY BUCKET

◈1.44m3 PCSA heaped bucket

Capacity

1.44m3 PCSA heaped bucket

Recommendation 6.45m (21' 2") boom

Width Weight

PCSA heaped

CECE heaped

Without With side cutter side cutter

◈1.44m3 (1.88yd3)

1.25m3 (1.63yd3)

1380mm (54.3")

-

1380kg (3040lb)

1.44m3 (1.88yd3)

1.25m3 (1.63yd3)

1380mm (54.3")

-

1390kg (3060lb)

2.2m arm (7' 3")

2.5m arm (8' 2")

3.2m arm (10' 6")

◈ : Heavy duty bucket : Rock bucket

Applicable for materials with density of 2000kgf/m3 (3370lbf/yd3) or less Applicable for materials with density of 1600kgf/m3 (2700lbf/yd3) or less

1-17

6.15m (20' 2") boom 4.05m arm (13' 3")

2.2m arm (7' 3")

7. UNDERCARRIAGE 1) TRACKS X-leg type center frame is integrally welded with reinforced box-section track frames. The design includes dry tracks, lubricated rollers, idlers, sprockets, hydraulic track adjusters with shock absorbing springs and assembled track-type tractor shoes with triple grousers.

2) TYPES OF SHOES Triple grouser Shapes

Model

R320LC-7

Shoe width

mm(in)

600(24)

700(28)

800(32)

900(36)

Operating weight

kg(lb)

32200(71000)

32800(72300)

33200(73200)

33600(74100)

Ground pressure kgf/cm (psi)

0.62(8.82)

0.54(7.68)

0.48(6.83)

0.43(6.11)

Overall width

3280(10' 9")

3380(11' 1")

3480(11' 5")

3580(11' 9")

2

mm(ft-in)

3) NUMBER OF ROLLERS AND SHOES ON EACH SIDE Item

Quantity

Carrier rollers

2EA

Track rollers

9EA

Track shoes

48EA

4) SELECTION OF TRACK SHOE Suitable track shoes should be selected according to operating conditions.

Method of selecting shoes Confirm the category from the list of applications in table 2, then use table 1 to select the shoe.

Wide shoes(Categories B and C) have limitations on applications. Before using wide shoes, check the precautions, then investigate and study the operating conditions to confirm if these shoes are suitable.

Select the narrowest shoe possible to meet the required flotation and ground pressure. Application of wider shoes than recommendations will cause unexpected problem such as bending of shoes, crack of link, breakage of pin, loosening of shoe bolts and the other various problems. ※ Table 1 Specification

Category

600mm triple grouser

Standard

A

700mm triple grouser

Option

B

800mm triple grouser

Option

C

900mm triple grouser

Option

C

Track shoe

1-18

※ Table 2 Category A

B

Applications

Precautions

Rocky ground, river beds, normal soil

· Travel at low speed on rough ground with large obstacles such as

Normal soil, soft ground

· These shoes cannot be used on rough ground with large obstacles such

boulders or fallen trees

as boulders or fallen trees · Travel at high speed only on flat ground · Travel slowly at low speed if it is impossible to avoid going over obstacles

Extremely soft gound · Use the shoes only in the conditions that the machine sinks and it is (Swampy ground) impossible to use the shoes of category A or B

· These shoes cannot be used on rough ground with large obstacles such C

as boulders or fallen trees · Travel at high speed only on flat ground

· Travel slowly at low speed if it is impossible to avoid going over obstacles

1-19

8. SPECIFICATIONS FOR MAJOR COMPONENTS 1) ENGINE Item

Specification

Model

Cummins C8.3-C

Type

4-cycle turbocharged charger air cooled diesel engine

Cooling method

Water cooling

Number of cylinders and arrangement

6 cylinders, in-line

Firing order

1-5-3-6-2-4

Combustion chamber type

Direct injection type

Cylinder bore×stroke

114×135mm(4.49"×5.32")

Piston displacement

8300cc(505cu in)

Compression ratio

18 : 1

Rated gross horse power(SAE J1995)

259Hp at 1750rpm(193kW at 1750rpm)

Maximum torque

124.3kgf·m(899lbf·ft) at 1300rpm

Engine oil quantity

25.5ℓ(6.7U.S. gal)

Dry weight

588kg(1296lb)

High idling speed

1900+50rpm

Low idling speed

850±50rpm

Rated fuel consumption

158.8g/Hp·hr at 1750rpm

Starting motor

Delco Remy 39MT(24V-7.2kW)

Alternator

Delco Remy 24V-50A

Battery

2×12V×160Ah

2) MAIN PUMP Item

Specification

Type

Variable displacement tandem axis piston pumps

Capacity

2×148.6cc/rev

Maximum pressure

330kgf/cm2 (4690psi)[360kgf/cm2 (5120psi)]

Rated oil flow

2×260ℓ/min (68.7U.S. gpm/ 57.2U.K. gpm)

Rated speed

1750rpm

[ ]: Power boost

1-20

3) GEAR PUMP Item

Specification

Type

Fixed displacement gear pump single stage

Capacity

15cc/rev

Maximum pressure

35kgf/cm2(500psi)

Rated oil flow

27˶/min(7.1U.S. gpm/6.0U.K. gpm)

4) MAIN CONTROL VALVE Item

Specification

Type

9 spools

Operating method

Hydraulic pilot system

Main relief valve pressure

330kgf/cm2(4690psi)[360kgf/cm2(5120psi)]

Overload relief valve pressure

390kgf/cm2(5550psi)

[ ]: Power boost

5) SWING MOTOR Item

Specification

Type

Axial piston motor

Capacity

169.4cc/rev

Relief pressure

265kgf/cm2(3770psi)

Braking system

Automatic, spring applied hydraulic released

Braking torque

70kgfÂm(505lbfÂft)

Brake release pressure

26kgf/cm2(370psi)

Reduction gear type

2 - stage planetary

Swing speed

9.1rpm

6) TRAVEL MOTOR Item

Specification

Type

Variable displacement axial piston motor

Relief pressure

330kgf/cm2(4700psi)

Capacity(max / min)

279.1/160cc/rev

Reduction gear type

3-stage planetary

Braking system

Automatic, spring applied hydraulic released

Brake release pressure

15.7kgf/cm2(225psi)

Braking torque

78.8kgfÂm(570lbfÂft)

1-21

7) REMOTE CONTROL VALVE Item

Specification

Type

Pressure reducing type

Operating pressure

Single operation stroke

Minimum

6.5kgf/cm2(92psi)

Maximum

26kgf/cm2(370psi)

Lever

61mm(2.4in)

Pedal

123mm(4.84in)

8) CYLINDER Specification

Item Boom cylinder

Bore dia×Rod dia×Stroke Ø150×Ø105×1480mm Cushion

Extend only

Bore dia×Rod dia×Stroke Ø160×Ø110×1685mm

Arm cylinder

Cushion

Bucket cylinder

Extend and retract

Bore dia×Rod dia×Stroke Ø140×Ø100×1285mm Cushion

Extend only

※ Discoloration of cylinder rod can occur when the friction reduction additive of lubrication oil spreads on the rod surface. ※ Discoloration does not cause any harmful effect on the cylinder performance.

9) SHOE Item Standard R320LC-7

Option

Width

Ground pressure

Link quantity

Overall width

600mm(24")

0.62kgf/cm2(8.82psi)

48

3280mm(10' 9")

700mm(28")

0.54kgf/cm2(7.68psi)

48

3380mm(11' 1")

800mm(32")

0.48kgf/cm2(6.83psi)

48

3480mm(11' 5")

900mm(36")

0.43kgf/cm2(6.11psi)

48

3580mm(11' 9")

1-22

10) BUCKET Capacity

Item Standard

R320LC-7

Option

Width Tooth quantity Without side cutter With side cutter

PCSA heaped

CECE heaped

1.44m3(1.88yd3)

1.25m3(1.63yd3)

5

1380mm(54.3")

1500mm(59.1")

0.9m3(1.18yd3)

0.8m3(1.05yd3)

3

950mm(37.4")

1070mm(42.2")

1.14m3(1.49yd3)

1.0m3(1.31yd3)

4

1140mm(44.9")

1260mm(49.6")

1.74m3(2.28yd3)

1.5m3(1.96yd3)

5

1610mm(63.4")

1730mm(68.1")

2.10m3(2.75yd3)

1.8m3(2.35yd3)

5

1900mm(74.8")

2020mm(79.5")

◈1.44m3(1.88yd3)

1.25m3(1.63yd3)

5

1380mm(54.3")

-

1.44m3(1.88yd3)

1.25m3(1.63yd3)

5

1380mm(54.3")

-

◈ : Heavy duty bucket : Rock bucket(Esco type)

1-23

9. RECOMMENDED OILS Use only oils listed below or equivalent.

Do not mix different brand oil.

Service point

Kind of fluid

Ambient temperature ° C (° F)

Capacity ℓ(U.S. gal)

-20 (-4)

-10 (14)

0 (32)

10 (50)

20 (68)

30 (86)

SAE 30 Engine oil pan

SAE 10W Engine oil

25(6.6) SAE 10W-30 SAE 15W-40

7.0(1.9)

Swing drive Gear oil Final drive

Hydraulic tank

Hydraulic oil

SAE 85W-140

11.0×2 (2.9×2)

ISO VG 32

Tank; 210(55.5)

ISO VG 46 System; 320(84.5)

ISO VG 68

ASTM D975 NO.1 Fuel tank

Diesel fuel

480(127) ASTM D975 NO.2

Fitting (Grease nipple)

Grease

Radiator (Reservoir tank)

Mixture of antifreeze and water 50 : 50

NLGI NO.1

As required

NLGI NO.2

Ethylene glycol base permanent type

45(12)

SAE : Society of Automotive Engineers API : American Petroleum Institute ISO : International Organization for Standardization NLGI : National Lubricating Grease Institute ASTM : American Society of Testing and Material

1-24

40 (104)

SECTION 2 STRUCTURE AND FUNCTION

Group 1 Pump Device Group 2 Main Control Valve Group 3 Swing Device Group 4 Travel Device Group 5 RCV Lever Group 6 RCV Pedal

2-1 2-21 2-47 2-58 2-73 2-80

SECTION 2 STRUCTURE AND FUNCTION GROUP 1 PUMP DEVICE 1. STRUCTURE The pump device consists of main pump, regulator and gear pump.

Port

Port name

A1,2

Delivery port

SAE6000psi 1"

B1

Suction port

SAE2500psi 3"

Dr

Drain port

PF 3/4 - 23

Pi1,i2

Pilot port

PF 1/4 - 15

Pm1,m2 Qmax cut port

32072ST02

2-1

Port size

PF 1/4 - 15

Psv

Servo assist port

PF 1/4 - 15

a1,2,4

Gauge port

PF 1/4 - 15

a3

Gauge port

PF 1/4 - 14

A3

Gear pump delivery port

PF 1/2 - 19

B3

Gear pump suction port

PF 3/4 - 20.5

dr3

Gear pump drain port

PF 3/8

1) MAIN PUMP(1/2) The main pump consists of two piston pumps(front & rear) and valve block.

32072ST03

04 111 113 114 123 124 127 141 151 152 153 156 157 158 211 212 214 251

Gear pump Drive shaft(F) Drive shaft(R) Spline coupling Roller bearing Needle bearing Bearing spacer Cylinder block Piston Shoe Push plate Bushing Cylinder spring Spacer Shoe plate Swash plate Bushing Swash plate support

261 271 312 313 314 401 406 435 466 468 490 531 532 534 535 548 702 710

Seal cover(F) Pump casing Valve block Valve plate(R) Valve plate(L) Hexagon socket bolt Hexagon socket bolt Flange socket bolt VP plug VP plug VP plug Tilting pin Servo piston Stopper(L) Stopper(S) Pin O-ring O-ring

2-2

717 719 724 725 728 732 774 789 792 808 824 885 886 901 953 954

O-ring O-ring O-ring O-ring O-ring O-ring Oil seal Back up ring Back up ring Hexagon head nut Snap ring Pin Spring pin Eye bolt Set screw Set screw

MAIN PUMP(2/2)

544 543 545

079 725

325

541

466 725 490

407

725

732

B VIEW A

VIEW B 29072MP03

079 325 407 466

Proportional reducing valve Casing assy Hexagon screw Plug

490 541 543 544

Plug Seat Stopper 1 Stopper 2

2-3

545 Steel ball 725 O-ring 732 O-ring

2) REGULATOR(1/2)

32072ST04

2-4

Port

Port name

port size

A

Delivery port

SAE6000psi 1"

B

Suction port

SAE2500psi 3"

Pi

Pilot port

PF 1/4-15

Pm

Qmax cut port

PF 1/4-15

Hyundai R320LC-7 Crawler Excavator Workshop Service Manual

Engine: ● The excavator is typically equipped with a powerful diesel engine. ● The exact specifications of the engine may vary, but it usually has a displacement of around 8.8 liters.

Hyundai R320LC-7 Crawler Excavator Service Manual