Komatsu A90301, Shop Manual

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PC200LC-8 10-9
STRUCTURE, FUNCTION AND
MAINTENANCE STANDARD
POWER TRAIN
Specifications
Reduction ratio: . . . . . . – ((10 + 95)/10) x ((21 + 95)/21) + 1 = –57.000
Torque Values
1. Level Plug 6. No. 1 planetary carrier 11. Floating seal
2. No. 1 Planetary gear (No. of teeth:
42)
7. Cover 12. Travel motor
3. Drain plug 8. No. 2 planetary gear
13. No. 2 planetary gear (No. of teeth:
36)
4. No. 1 sun gear (No. of teeth:10) 9. Gear hub (No. of teeth: 95)
5. No. 2 sun gear (No. of teeth: 21) 10. Sprocket
Unit: mm (in)
No. Check item Criteria Remedy
14
Backlash between No. 2 sun
gear and No.2 planetary gear
Standard clearance Clearance limit
Replace
0.13–0.47(0.005– 0.018) 1.00 (0.040)
15
Backlash between No. 1 plane-
tary gear and gear hub
0.17–0.57 (0.007–0.022) 1.10 (0.043)
16
Backlash between No. 2 plane-
tary carrier and motor
0.06–0.25 (0.002–0.10) —
17
Backlash between No. 1 sun
gear and No.1 planetary gear
0.14–0.46 (0.005–0.018) 1.00 (0.040)
18
Backlash between No. 2 plane-
tary gear and gear hub
0.16–0.56 (0.006–0.022) 1.10 (0.043)
19
Backlash between No. 1 plane-
tary carrier and No. 2 sun gear
0.38–0.66 (0.015–0.026) 1.00 (0.040)
20
Amount of wear on sprocket
tooth
Repair limit: 6
Build-up welding or
replace
21 Width of sprocket tooth
Standard size Repair limit
71 (2.80) 68 (2.68)
Item N•m lbf ft
22 98 - 123 73 - 90
23 441 - 490 326 - 361
24 245 - 309 181 - 227
25 58.8 - 78.4 44 - 57