Komatsu ecot3 PC300LC-8 Shop Manual page 89

10 Structure, function and maintenance standard
No. Check Item
1
Outside diameter of protrusion
2
Outside diameter of tread
3
Difference of tread
4
Thickness of tread
5
Total width
6
Width of tread
Clearance between shaft and bush-
7
ing
Interference between idler and
8
bushing
Clearance between bushing and
9
support
(Sum of clearance at both sides)
PC300, 350-8
Standard size
635
590
22.5
—
190
44
Tolerance
Standard
size
Shaft
–0.225
80
–0.325
Tolerance
Standard
size
Shaft
+0.087
87.6
+0.037
Standard size
0.68 – 1.22
Criteria
Rapair limit
—
578
28.5
—
—
50
Standard Clearance
clearance
Hole
+0.130 0.201 –
–0.024 0.455
Standard Interference
interference
Hole
–0.027 0.064 –
–0.079 0.166
Clearance limit
—
SEN01992-00
Unit: mm
Remedy
Build-up welding for
rebuilding or
replace
limit
—
Replace bushing
limit
—
5