Idler - Komatsu PC20R-8 Shop Manual

IDLER

No. Check item
Outer diameter of
1
track shoe guide
Outer diameter
2
of tread
Width of track
3
shoe guide
4 Total width
5 Width of tread
Clearance between
6
bushing and idler
Clearance between
7
shaft and support
PC20R-8 PC27R-8
5
4
6
7
Standard size
338
300
28
64
18
Standard
size
Shaft
± 0.025
35
± 0.064
Standard size
0.25
3
1
2
RKP01720
Criteria
Repair limit
Tolerance
Standard
clearance
Hole
+ 0.142 0.105 ±
+ 0.080 0.206
Repair limixt
Unit: mm
Remedy
330
292
Build up by
welding or
replace
20
59
22
Clearance
limit
1.5 Replace
1.0
40-7