Komatsu D31EX-21, Operation & Maintenance Manual, Page: 154 / 256

OPERATION
OPERATION
3-102
MEASURING HEIGHT OF GROUSER
After taking up slack in track shoes, measure height at center
of shoe as shown below.
D31,37
q
Standard height (h): 47 mm
q
Repair limits: 20 mm
D39
q
Standard height (h): 53 mm
q
Repair limits: 25 mm
MEASURING OUTSIDE DIAMETER OF TRACK ROLLER
1. Measure the height (dimension C) of the link tread as
shown in the diagram.
2. Stop machine at position where link tread, whose size C
has been measured completely, contacts roller tread. Then
measure size B.
3. Calculate outside diameter of tread (size A):
A = (B - C) x 2
D31,37
q
Standard size (h): 170 mm
q
Repair limits: 156 mm
D39
q
Standard size (h): 175 mm
q
Repair limits: 150 mm