Komatsu D65EX-12 Operation & Maintenance Manual page 144

OPERATION
INSPECTION AND REPAIR
Frequent inspection and prompt repair will reduce repair costs.
The following items for inspection will serve as a guide to maintenance service of each undercarriage part. Per-
form periodical inspection and contact the Komatsu distributor in your area when machine has approached repair-
able limits and reversing limits.
MEASURING LINK PITCH
1. Insert a wooden block between track shoe and sprocket
to take up the slack in track shoes.
2. Measure pitch length (L) of 4 links in stretched portion at
more than 2 links away from master pin. Of length
obtained, 1/4 is the link pitch.
Basic link pitch (P): 203 mm (8 in)
Link pitch limit for turning: 206 mm (8.1 in)
There is no link window on the master link.
REMARK
The measured value after the decimal point for the link pitch may be different from basic link pitch (P), even if
there is no wear. This depends on the tolerance for the machining dimensions and the precision of measurement.
Do not immediately judge that there is wear; take measurements periodically and judge from the trend.
MEASURING HEIGHT OF GROUSER
(D65EX)
After taking up slack in track shoes, measure height at center
of shoe as shown below.
Standard height (h): 65 mm (2.6 in)
Repair limits: 25 mm (1 in)
OPERATION
3-97