Komatsu PC88MR-10 Shop Manual page 1262

60 Maintenance standard
Swing machinery
No. Item
Backlash between No. 2
planetary gear and ring
6
gear
Backlash between No. 2
planetary carrier and
7
swing pinion
Backlash between swing
8
pinion and swing circle
Outside diameter of oil
seal contact surface of
9
swing pinion collar
60-10
Criteria
0.13 to 0.42
0.07 to 0.21
0.22 to 0.81
Standard
Tolerance
dimension
145
-0.100
0.8
-
1.6
Repair limit
0
144.8
Unit: mm
Remedy
Repair by hard
chrome plating
or replace
PC88MR-10