Komatsu A90301, Руководство по ремонту

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PC200LC-8 10-11
STRUCTURE, FUNCTION AND
MAINTENANCE STANDARD
POWER TRAIN
Specifications
Reduction ratio: . . . . . . . . . . . . . (17 + 58)/17) x ((18 + 58)/18) = 18.627
Torque Values
1. Drain Plug 5. No. 2 sun gear 9. Swing motor
2. Swing pinion (No. of teeth: 13) 6. No. 1 planetary carrier 10. Oil level gauge
3. No. 2 planetary carrier 7. No. 1 planetary gear 11. Ring gear
4. No. 2 planetary gear 8. No. 1 sun gear 12. Case
Unit: mm (in)
No. Check item Criteria Remedy
13
Backlash between swing motor
shaft and No. 1 sun gear
Standard clearance Clearance limit
Replace
0.18–0.28 (0.007–0.011) —
14
Backlash between No. 1 sun
gear and No.1 planetary gear
0.16–0.50 (0.006–0.020) 1.00 (0.040)
15
Backlash between No. 1 plane-
tary gear and ring gear
0.18–0.59 (0.007–0.023) 1.10 (0.043)
16
Backlash between No. 1 plane-
tary carrier and No. 2 sun gear
0.39–0.71 (0.015-0.025) 1.20 (0.047)
17
Backlash between No. 2 sun
gear and No.2 planetary gear
0.16–0.50 (0.006–0.020) 0.90 (0.035)
18
Backlash between No. 2 plane-
tary gear and ring gear
0.18–0.59 (0.007–0.023) 1.00 (0.040)
19
Backlash between No. 2 plane-
tary carrier and swing pinion
0.07–0.23 (0.003–0.009) —
20
Backlash between swing pinion
and swing circle
0.22–1.32 (0.009–0.052) 2.00 (0.079)
21
Clearance between plate and
No. 2 planetary carrier
0.66–1.14 (0.060–0.045) —
22
Clearance between No. 2 sun
gear and plate
1.66–2.94 (0.065–0.116) —
23
Wear of swing pinion surface
contacting with oil seal
Standard size Repair limit
Apply hard chrome
plating or replace
ø125 (+0/ –0.100) —
Item N•m lbf ft
24 59-74 44 - 54
25 157 - 196 116 - 144
26 157 - 196 116 - 144
27 59 - 74 44 - 54
28 490 - 608 362 - 448