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Komatsu
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PC340LC
Service Manual
630 pgs119.81 Mb2

Komatsu PC340LC, 340NLC-7K Service Manual

UEBM001501
PC340LC, 340NLC-7K
MACHINE MODEL SERIAL NUMBER
PC340LC-7K 00 K40001 AND UP 00 PC340NLC-7K 00 K40001 AND UP 00
• This shop manual may contain attachments and optional equipment that are not available in your area. Please consult your local Komatsu distributor for those items you may require.
Materials and specifications are subject to change without notice.
For details of the engine, see the 114 Series Engine Shop Manual.
© 2002 All Rights Reserved 00-1 Printed in Belgium 12-02
CONTENTS
No. of page
01 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1
10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD . . . . . . .10-1
20 TESTING AND ADJUSTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-1
30 DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30-1
90 OTHERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90-1
00
00-2
LIST OF REVISED PAGES
The affected pages are indicated by the use of the following marks. It is requested that necessary actions be taken to these pages according to the table below.
LIST OF REVISED PAGES
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revision
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00-1 10-13 10-42 10-70 10-100
00-2 10-14 10-43 10-71 10-101
00-2-1 10-15 10-44 10-72 10-102
00-2-2 10-16 10-45 10-74 10-103
00-2-3 10-17 10-46 10-75 10-104
00-2-4 10-18 10-47 10-76 10-105
10-19 10-48 10-77 10-106
10-20 10-50 10-78 10-107
10-21 10-51 10-79 10-108
01-1 10-22 10-52 10-80 10-109
01-2 10-23 10-53 10-81 10-110
01-3 10-24 10-54 10-82 10-111
01-4 10-26 10-55 10-83 10-112
01-5 10-27 10-56 10-84 10-113
01-6 10-28 10-57 10-85 10-114
01-7 10-29 10-58 10-86 10-115
01-8 10-30 10-59 10-87 10-116
10-31 10-60 10-88 10-117
10-1 10-32 10-61 10-89 10-118
10-2 10-33 10-62 10-90 10-120
10-3 10-34 10-62 10-91 10-121
10-4 10-35 10-63 10-92 10-122
10-6 10-36 10-64 10-94 10-123
10-7 10-37 10-65 10-95 10-124
10-8 10-38 10-66 10-96 10-125
10-9 10-39 10-67 10-97 10-126
10-10 10-40 10-68 10-98 10-127
10-12 10-41 10-69 10-99 10-128
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Page to be replaced Replace
( ) Page to be deleted Discard
Pages having no marks are those previously revised or made additions.
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PC340-7 00-2-1
LIST OF REVISED PAGES
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10-129 10-171 20-101 20-141 20-181
10-130 10-172 20-102 20-142 20-182
10-132 10-173 20-103 20-143
10-133 10-174 20-104 20-144
10-134 10-175 20-105 20-145
10-135 10-176 20-106 20-146 20-201
10-136 10-177 20-107 20-147 20-202
10-137 10-178 20-108 20-148 20-203
10-138 10-179 20-109 20-149 20-204
10-139 10-180 20-110 20-150 20-205
10-140 10-181 20-111 20-151 20-206
10-141 10-182 20-112 20-152 20-207
10-142 10-183 20-113 20-153 20-208
10-143 10-184 20-114 20-154 20-209
10-144 10-185 20-115 20-155 20-210
10-146 10-186 20-116 20-156 20-211
10-147 10-187 20-117 20-157 20-212
10-148 10-188 20-118 20-158 20-213
10.149 10-189 20-119 20-159 20-214
10-150 10-190 20-120 20-160 20-215
10-151 10-191 20-121 20-161 20-216
10-152 10-192 20-122 20-162 20-218
10-153 10-193 20-123 20-163 20-219
10-154 10-194 20-124 20-164 20-220
10-155 10-195 20-125 20-165 20-221
10-156 10-196 20-126 20-166 20-222
10-157 10-197 20-127 20-167 20-224
10-158 10-198 20-128 20-168 20-225
10-159 20-129 20-169 20-226
10-160 20-1 20-130 20-170 20-227
10-161 20-2 20-131 20-171 20-228
10-162 20-3 20-132 20-172 20-230
10-163 20-4 20-133 20-173 20-231
10-164 20-5 20-134 20-174 20-232
10-165 20-6 20-135 20-175 20-233
10-166 20-7 20-136 20-176 20-234
10-167 20-8 20-137 20-177 20-235
10-168 20-9 20-138 20-178 20-236
10-169 20-10 20-139 20-179 20-237
10-170 20-140 20-180 20-238
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00-2-2 PC340-7
LIST OF REVISED PAGES
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20-239 20-320 20-360 20-514 20-601
20-240 20-321 20-362 20-515 20-602
20-241 20-322 20-363 20-516 20-603
20-242 20-323 20-364 20-517 20-604
20-243 20-324 20-365 20-518 20-605
20-244 20-325 20-366 20-519 20-606
20-245 20-326 20-367 20-520 20-607
20-246 20-327 20-368 20-521 20-608
20-247 20-328 20-369 20-522 20-609
20-248 20-329 20-370 20-523 20-610
20-249 20-330 20-371 20-524 20-611
20-250 20-331 20-372 20-525 20-612
20-251 20-332 20-374 20-526 20-613
20-252 20-333 20-375 20-527 20-614
20-253 20-334 20-376 20-528 20-615
20-254 20-335 20-377 20-530 20-616
20-255 20-336 20-378 20-531 20-617
20-256 20-337 20-379 20-532 20-618
20-257 20-338 20-380 20-533 20-619
20-339 20-381 20-534 20-620
20-340 20-382 20-535 20-621
20-341 20-383 20-536 20-622
20-342 20-384 20-537 20-623
20-301 20-343 20-385 20-538
20-302 20-344 20-386 20-540
20-304 20-345 20-541
20-305 20-346 20-542
20-306 20-347 20-543
20-307 20-348 20-501 20-544 30-1
20-308 20-349 20-502 20-545 30-2
20-309 20-350 20-503 20-546 30-3
20-310 20-351 20-504 20-547 30-4
20-311 20-352 20-505 20-548 30-5
20-312 20-353 20-506 20-549 30-6
20-313 20-354 20-507 30-7
20-314 20-355 20-508 30-8
20-315 20-356 20-510 30-9
20-316 20-357 20-511 30-10
20-317 20-358 20-512 30-11
20-318 20-359 20-513 30-12
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PC340-7 00-2-3
LIST OF REVISED PAGES
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30-13 30-53 20-93
30-14 30-54 30-94
30-15 30-55 30-95
30-16 30-56 30-96
30-17 30-57
30-18 30-58
30-19 30-59
30-20 30-60 90-1
30-21 30-61 90-3
30-22 30-62 90-5
30-23 30-63 90-7
30-24 30-64 90-9
30-25 30-65
30-26 30-66
30-27 30-67
30-28 30-68
30-29 30-69
30-30 30-70
30-31 30-71
30-32 30-72
30-33 30-73
30-34 30-74
30-35 30-75
30-36 30-76
30-37 30-77
30-38 30-78
30-39 30-79
30-40 30-80
30-41 30-81
30-42 30-82
30-43 30-83
30-44 30-84
30-45 30-85
30-46 30-86
30-47 30-87
30-48 30-88
30-49 30-89
30-50 30-90
30-51 30-91
30-52 30-92
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00-2-4 PC340-7
01 GENERAL
Specification Dimension Drawings . . . . . . . . 01-2
Specifications
PC340LC-7, PC340NLC-7. . . . . . . . . . 01-4
Weight Table
PC340LC-7, PC340NLC-7. . . . . . . . . . 01-6
Fuel, Coolant, And Lubricants . . . . . . . . . . . . 01-8
PC340-7
01-1
GENERAL SPECIFICATION DIMENSION DRAWINGS
SPECIFICATION DIMENSION DRAWINGS
DIMENSIONS
WORKING RANGES
01-2 PC340-7
GENERAL SPECIFICATION DIMENSION DRAWINGS
12
DIMENSIONS
Item Unit PC340LC-7 PC340NLC-7
A Overall length mm 11,140 11,140
B Overall height mm 3,290 3,280
C Overall width mm 3,190 2,990
D Track shoe width mm 700 600
E Height of cab mm 3,130 3,130
F Tail swing radius mm 3,450 3,450
G Track overall length mm 4,955 4,955
H Length of track on ground mm 4,030 4,030
Min. ground clearance mm 498 498
WORKING RANGES
Item Unit PC340LC-7 PC340NLC-7
A Max. digging reach mm 11,100 11,100
B Max. digging depth mm 7,380 7,380
C Max. digging height mm 10,210 10,210
D Max. vertical wall depth mm 6,480 6,480
E Max. dumping height mm 7,110 7,110
F Min. dumping height mm 2,640 2,640
G Max. reach at ground level mm 10,920 10,920
PC340-7 01-3
GENERAL SPECIFICATIONS
SPECIFICATIONS
PC340LC-7, PC340NLC-7
Machine model PC340LC-7 PC340NLC-7
Serial Number 40001 and up
Bucket capacity m³ 1.4 1.4
Operating weight kg 33,530 33,230
Max. digging depth
Max. vertical wall depth
Max. digging reach
Max. reach at ground level
Max. digging height
Working ranges
Max. dumping height
Max. digging force
(using power max. function)
Swing speed
Performance
Swing max. slope angle
Travel speed
Gradeability
Ground pressure
[standard shoe width]
Overall length (for transport)
Overall width
Overall width of track
Overall height (for transport)
Overall height to chassis
Ground clearance to bottom of upper structure
Min. ground clearance
Tail swing radius
Dimensions
Min. swing radius of work equipment
Height of work equipment at min. swing radius
Length of track on ground
Track gauge
Height of machine cab
mm
mm
mm
mm
mm
mm
kN {kg}
kN {kg}
rpm
deg.
km/h
deg.
kPa {kg/cm²}
[mm]
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
7,380
6,480
11,100
10,920
10,210
7,110
211.8 {21,600} (226.5
{23,100})
9.5
21
Lo: 3.2 ( Mi: 4.5)
Hi: 5.5
35
53.0 {0.54}
[700]
11,140
3,190
3,290
3,280
3,130
1,186
498
3,450
4,310
8,520
4,030
2,590
3,130
7,380
6,480
11,100
10,920
10,210
7,110
211.8 {21,600} (226.5
{23,100})
9.5
21
Lo: 3.2 ( Mi: 4.5)
Hi: 5.5
35
61.8 {0.63}
[600]
11,140
3,190
2,990
3,280
3,130
1,186
498
3,450
4,310
8,520
4,030
2,590
3,130
: The "Mi" mode is on the multi-monitor specification machine only.
01-4 PC340-7
GENERAL SPECIFICATIONS
12
Machine model PC340LC-7 PC340NLC-7
Serial Number 40001 and up
Model
Type
No. of cylinders - bore x stroke
Piston displacement
Flywheel horsepower
Max. torque
Engine
Under-
carriage
Max. speed at no load
Min. speed at no load
Performance
Min. fuel consumption
Starting motor
Alternator
Battery
Radiator core type CF19-4
Carrier roller 2 on each side
Track roller 7 on each side 8 on each side
Track shoe
Type x No.
Delivery
pump
Set pressure
Hydraulic
Nm/rpm {kgm/rpm}
mm
l {cc}
kW/rpm {HP/rpm}
rpm
rpm
g/kWh {g/HPh}
l/min
MPa (kg/cm²)
4-cycle, water-cooled, in-line, vertical, direct injection, with
Assembly-type triple
grouser, 45 on each side
HPV125+125, variable displacement, Piston type x2
SAA6D114E
turbo charger and aftercooler
6 - 114 x 135
8.27 {8,270}
180.3/1,900 {242/1,900}
1,079/1,400 {110/1,400}
2,160
900
205 {153}
24V, 7.5 kW
24V, 35 A
12V, 126 Ah x 2
Assembly-type triple
grouser, 48 on each side
267.5 x 2
37.8 {380}
valve
Control
motor
Hydraulic
Hydraulic system
Hydraulic cylinder
Hydraulic tank
Hydraulic filter
Hydraulic cooler
Type x No.
Control method
Travel motor
Swing motor
Type
Inside diameter of cylinder
Diameter of piston rod
Stroke
Max. distance between pins
Min. distance between pins
mm
mm
mm
mm
mm
6-spool type + 1-spool type x 1
Hydraulic
HMV160ADT-2, Piston type
(with brake valve, parking brake): x 2
KMF230ABE-5, Piston type
(with safety valve, holding brake): x 1
reverse rotation check valve
Boom Arm Bucket
Double acting
piston
140
100
1,480
3,525
2,045
Double acting
piston
160
110
1,825
4,255
2,430
Closed box type
Tank return side
CFT-1 (Air cooled)
Double acting
piston
140
100
1,285
3,155
1,870
PC340-7 01-5
GENERAL WEIGHT TABLE
WEIGHT TABLE
This weight table is for use when handling components or when transporting the machine.
PC340LC-7, PC340NLC-7
Unit: kg
Machine model PC340LC-7 PC340NLC-7
Serial Number 40001 and up
Engine assembly
• Engine
• Damper
• Hydraulic pump
Radiator oil cooler assembly 153 153
Hydraulic tank, filter assembly (excluding hydraulic oil) 176 176
Fuel tank (excluding fuel) 238 238
Revolving frame 2,723 2,723
Operator’s cab 292 292
Operator’s seat 35 35
Counterweight 5,470 5,470
Swing machinery 442 442
Control valve 242 242
Swing motor 88 88
Travel motor 164 x 2 164 x 2
Center swivel joint 29.9 29.9
Track frame assembly
• Track frame
• Swing circle
• Idler
• Idler cushion
• Carrier roller
• Track roller
• Final drive (including travel motor)
1,148
860
14.3
178
7,979
4,441
487
169 x 2
287.5 x 2
31.3 x 4
52.9 x 14
583 x 2
1,148
860
14.3
178
7,979
4096.79
169 x 2
287.5 x 2
31.3 x 4
52.9 x 16
583 x 2
01-6 PC340-7
GENERAL WEIGHT TABLE
12
Unit: kg
Machine model PC340LC-7 PC340NLC-7
Serial Number 40001 and up
Track shoe assembly
• Standard triple grouser shoe (600 mm)
• Standard triple grouser shoe (700 mm)
• Wide triple grouser shoe (800 mm)
• Road liner (rubber pad type) (600 mm)
Boom assembly 2,290 2,290
Arm assembly 1,105 1,105
Bucket assembly 1,015 1,015
Boom cylinder assembly 254 x 2 254 x 2
Arm cylinder assembly 382 382
Bucket cylinder assembly 228 228
Link assembly (large) 316 316
Link assembly (small) — —
Boom pin 76 + 15 x 2 + 56 + 17 + 42 76 + 15 x 2 + 56 + 17 + 42
Arm pin 13 +17 13 +17
3,700
4,300
4,680
—
3,700
4,300
4,680
—
Bucket pin 30 x 2 30 x 2
Link pin 27 x 2 27 x 2
PC340-7 01-7
GENERAL FUEL, COOLANT, AND LUBRICANTS
12
FUEL, COOLANT, AND LUBRICANTS
KIND
RESERVOIR
OF
FLUID
Engine oil pan 38 35
Damper case 1.3
Swing machinery case 13.4 13.4
Final drive case (each side)
Idler (1 each) 0.22 ~ 0.24 0.22 ~ 0.24
Track roller (1 each) 0.25 ~ 0.28 0.25 ~ 0.28
Carrier roller (1 each) 0.145 ~ 0.155 0.145 ~ 0.155
Engine
oil
AMBIENT TEMPERATURE CAPACITY (
-22 -4 14 32 50 68 86 104°F
-30 -20 -10 0 10 20 30 40°C
SAE 30
SAE 10W
SAE 10W-30
SAE 15W-40
SAE 30 8.5 8.5
SAE 10W
Specified Refill
l)
—
SAE 10W-30
Hydraulic system 365 188
Hydraulic
oil
Fuel tank
Cooling system Coolant Add antifreeze 32 —
Diesel
fuel
ASTM D975A
No.1
SAE 15W-40
H046-HM (★)
ASTM D975 No. 2
605
★ For the H-046-HM, use the oil recommended by Komatsu.
—
01-8 PC340-7
10 STRUCTURE, FUNCTION AND
MAINTENANCE STANDARD
1252
Engine Related Parts. . . . . . . . . . . . . . . . . . 10-2
Radiator • Oil Cooler • Aftercooler . . . . . . 10-3
Power Train. . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Final Drive . . . . . . . . . . . . . . . . . . . . . . . . . 10-6
Swing Machinery . . . . . . . . . . . . . . . . . . . . 10-8
Swing Circle . . . . . . . . . . . . . . . . . . . . . . . 10-10
Track Frame • Recoil Spring . . . . . . . . . . 10-12
Idler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-14
Carrier roller . . . . . . . . . . . . . . . . . . . . . . . 10-16
Track roller . . . . . . . . . . . . . . . . . . . . . . . . 10-17
Track Shoe . . . . . . . . . . . . . . . . . . . . . . . . 10-18
Hydraulic Equipment Layout Drawing
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22
Hydraulic tank. . . . . . . . . . . . . . . . . . . . . . 10-24
Hydraulic Pump . . . . . . . . . . . . . . . . . . . . 10-26
Variable Volume Valve . . . . . . . . . . . . . . 10-47
Control Valve . . . . . . . . . . . . . . . . . . . . . . 10-50
CLSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-66
Self Pressure Reducing Valve. . . . . . . . . . 10-69
Swing Motor . . . . . . . . . . . . . . . . . . . . . . . 10-72
Reverse Prevention Valve. . . . . . . . . . . . . 10-78
Center Swivel Joint. . . . . . . . . . . . . . . . . . 10-80
Travel Motor . . . . . . . . . . . . . . . . . . . . . . . 10-81
Travel Junction Valve. . . . . . . . . . . . . . . . 10-91
Travel PPC Shuttle Valve . . . . . . . . . . . . . 10-94
Valve Control . . . . . . . . . . . . . . . . . . . . . . 10-98
Work Equipment • Swing PPC Valve. . . . 10-99
Travel PPC Valve . . . . . . . . . . . . . . . . . . 10-103
Service PPC Valve . . . . . . . . . . . . . . . . . 10-112
Solenoid Valve . . . . . . . . . . . . . . . . . . . . 10-115
PPC Accumulator . . . . . . . . . . . . . . . . . . 10-117
Return Oil Filter . . . . . . . . . . . . . . . . . . . 10-118
Boom Hydraulic Drift Prevention Valve
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-120
Quick Return Valve . . . . . . . . . . . . . . . . 10-126
Lift Check Valve. . . . . . . . . . . . . . . . . . . 10-128
Attachment Circuit Selector Valve . . . . . 10-129
Hydraulic Cylinder . . . . . . . . . . . . . . . . . 10-132
Work Equipment. . . . . . . . . . . . . . . . . . . 10-134
Air Conditioner . . . . . . . . . . . . . . . . . . . . 10-140
Engine Control . . . . . . . . . . . . . . . . . . . . 10-141
Electronic Control System . . . . . . . . . . . 10-149
Multi Monitor System. . . . . . . . . . . . . . . 10-173
Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-195
PC340-7
10-1
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD ENGINE RELATED PARTS
12
ENGINE RELATED PARTS
1. Drive plate
2. Torsion spring
3. Stopper pin
4. Friction plate
5. Damper assembly
6. Muffler
7. Rear engine mount
8. Front engine mount
OUTLINE
• The damper assembly is a wet type. Oil capacity: 1.3 l
10-2 PC340-7
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD
12
RADIATOR • OIL COOLER • AFTERCOOLER
RADIATOR • OIL COOLER •
AFTERCOOLER
SWP08671
1. Reservoir tank
2. Oil cooler
3. Radiator
4. Radiator inlet hose
5. Radiator outlet hose
6. Net
7. Shroud
8. Radiator cap
9. Aftercooler
PC340-7
SPECIFICATIONS
Radiator : CF19-4 Oil cooler : CF40-1
10-3
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD POWER TRAIN
12
POWER TRAIN
1. Idler
2. Center swivel joint
3. Control valve
4. Final drive
5. Travel motor (HMV 160ADT-2)
6. Engine (SAA6D114E)
7. Hydraulic pump (HPV125+125)
8. Travel speed solenoid valve
9. Swing brake solenoid valve
10. Swing machinery
11. Swing motor (KMF230ABE-5)
12. Swing circle
10-4 PC340-7
12
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD FINAL DRIVE
12
FINAL DRIVE
10-6 PC340-7
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD FINAL DRIVE
12
1. Level plug
2. Drain plug
3. No. 1 planetary gear (No. of teeth: 42)
4. No. 1 sun gear (No. of teeth: 11)
5. No. 2 sun gear (No. of teeth: 19)
6. No. 1 planetary carrier
7. No. 2 planetary carrier
8. Cover
9. Ring gear (No. of teeth: 97)
10. Hub
11. Sprocket
12. Floating seal
13. Travel motor
14. No. 2 planetary gear (No. of teeth: 38)
SPECIFICATIONS
Reduction ratio:
9711
+
11
×
 
−
 
No. Check item Criteria Remedy
Backlash between No. 1 sun gear and No. 1
15
planetary gear
Backlash between No. 1 planetary gear and
16
ring gear
Backlash between No. 2 planetary carrier and
17
motor
Backlash between No. 2 sun gear and No. 2
18
planetary gear
Backlash between No. 2 planetary gear and
19
ring gear
Standard clearance Clearance limit Replace
0.12 ~ 0.44 0.90
0.18 ~ 0.62 1.20
0.06 ~ 0.25 —
0.15 ~ 0.51 1.00
0.19 ~ 0.66 1.30
9719
+
19
 
943.58
−=
 
Unit: mm
Backlash between No. 2 planetary carrier and
20
No. 2 sun gear
21 Amount of wear on sprocket tooth Repair limit: 6
22 Width of sprocket tooth
PC340-7 10-7
0.39 ~ 0.80 1.60
Standard size Repair limit
87 84
Rebuild or replace
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD SWING MACHINERY
12
SWING MACHINERY
10-8 PC340-7
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD SWING MACHINERY
12
1. Swing pinion (No. of teeth: 13)
2. Spacer
3. Case
4. No. 2 planetary gear
5. No. 2 sun gear
6. Ring gear
7. No. 1 sun gear
8. Swing motor
9. Oil level gauge
10. No. 1 planetary gear
11. No. 1 planetary carrier
12. No. 2 planetary carrier
13. Drain plug
SPECIFICATIONS
Reduction ratio:
 
—
—
—
—
24
6824
+
553.17
=
 
Replace
Apply hard chrome plating, recondition, or replace
6819
+
19
×
 
1.00
1.10
1.20
1.00
1.10
2.00
 
No. Check item Criteria Remedy
Backlash between swing motor shaft and No. 1 sun
14
gear
Backlash between No. 1 sun gear and No. 1 plane-
15
tary gear
Backlash between No. 1 planetary gear and ring
16
gear
Backlash between No. 1 planetary carrier and No. 2
17
sun gear
Backlash between No. 2 sun gear and No. 2 plane-
18
tary gear
Backlash between No. 2 planetary gear and ring
19
gear
20 Backlash between coupling and swing pinion
21 Backlash between swing pinion and swing circle
22 Clearance between plate and coupling
Wear of swing pinion surface contacting with oil
23
seal
Standard clearance Clearance limit
~ 0.28
0.18
0.15
~ 0.51
0.17
~ 0.60
0.40
~ 0.75
0.16
~ 0.55
0.17
~ 0.60
0.08
~ 0.25
~ 1.21
0.00
0.57
~ 1.09
Standard size Repair limit
0
145
-0.100
Unit: mm
PC340-7 10-9
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD SWING CIRCLE
SWING CIRCLE
1. Swing circle inner race (No. of teeth: 90)
SPECIFICATIONS
2. Ball
3. Swing circle outer race
a. Inner race soft zone S position
Reduction ratio:
90 13
923.6
−=−
b. Outer race soft zone S position
Amount of grease: 33 l (G2-LI)
Unit: mm
No. Check item Criteria Remedy
Axial clearance of bearing
4
(when mounted on chassis)
Standard clearance Clearance limit
0.5
~ 1.6
3.2
Replace
10-10 PC340-7
12
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD TRACK FRAME • RECOIL SPRING
TRACK FRAME • RECOIL SPRING
SWP08996
1Idler 2 Track frame 3 Carrier roller 4 Final drive 5 Track roller 6 Track shoe 7 Center guard 8 Recoil spring 9Front guard
• The dimensions and the number of track rollers depend on the model, but the basic structure is not different.
• Number of track rollers
Model Q’ty
PC340LC-7 8
PC340NLC-7 8
10-12 PC340-7
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD TRACK FRAME • RECOIL SPRING
12
Standard shoe
Model
Item
PC340LC-7 PC340NLC-7
Shoe width 700 mm 600 mm
Link pitch 216 mm 216 mm
No. on track (one side) 48 (pieces) 48 (pieces)
Unit: mm
No. Check item Criteria Remedy
Standard size Tolerance Repair limit
10 Vertical width of idler guide
11 Horizontal width of idler guide
Track frame 123
+2
-1
Idler support 120 ± 0.5 118
Track frame 266
+3
-1
127
Rebuild or
replace
271
Idler support 261 — 259
Standard size Repair limit
12 Recoil spring
Free length
x O.D.
795 X 241 648
Installation
length
Installation
load
173.3 kN
(17,680 kg)
Free length
—
Installation
load
138.56 kN
(14,140 kg)
Replace
PC340-7 10-13
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD IDLER
12
IDLER
10-14 PC340-7
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD IDLER
12
Unit: mm
No. Check item Criteria Remedy
1 Outside diameter of protruding
2 Outside diameter of tread 590 578
3 Width of protrusion 102 —
4 Total width 190 —
5 Width of tread 44 50
6 Clearance between shaft and bushing
Interference between idler and bush-
7
ing
Standard size Repair limit
635 —
Standard
size
80
Standard
size
87.6
Tolerance
Shaft Hole
-0.225
-0.325
Shaft Hole
+0.087 +0.037
+0.130
-0.024
Tolerance
-0.027
-0.079
Standard clear-
ance
~ 0.455
0.201
Standard inter-
ference
~ 0.166
0.064
Rebuild or
replace
Clearance limit
1.5 Replace
bushing
Interference
limit
—
PC340-7 10-15
STRUCTURE, FUNCTION, & MAINTENANCE STANDARD CARRIER ROLLER
12
CARRIER ROLLER
SWP08998
Unit: mm
No. Check item Criteria Remedy
1 Outside diameter of flange
2 Outside diameter of tread 148 106
3 Width of tread 50.3 —
4 Thickness of tread 32 29.5
5 Width of flange 19 —
Interference between shaft and
6
bushing
Interference between roller and
7
bushing
Standard size Repair limit
175 —
Standard
size
50
Standard
size
57
Tolerance
Shaft Hole
-0.250
-0.270
Shaft Hole
+0.117 +0.087 0-0.040
+0.099
-0.032
Tolerance
Standard inter-
ference
~ 0.369
0.218
Standard inter-
ference
0.087
~ 0.158
Clearance limit
Replace
—
Interference
limit
—
8 Axial clearance of roller
Standard clearance Clearance limit
0.60 - 0.80 —
10-16 PC340-7
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