Komatsu D61EX-24 Operation & Maintenance Manual page 273

MACHINE OPERATIONS AND CONTROLS
METHOD FOR CHECKING AND REPAIRING
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 re-
pairable limits and reversing limits.
METHOD FOR MEASURE GROUSER HEIGHT
Eliminate the sag of the track, and measure at the center of the
track.
Standard dimension (h): 57.5 mm {2.3 in}
Repairable limit: 16.5 mm {0.6 in}
METHOD FOR MEASURING TRACK ROLLER DIAMETER
1.
Measure the link tread (dimension C) as shown in the fig-
ure.
2.
Stop the machine at a position where the link tread, at
which dimension C was measured, is perfectly in contact
with the roller tread.
3.
Measure dimension B.
4.
Calculate outside diameter of the tread (dimension A).
A = (B - C) x 2
Standard dimension (h): 200 mm {7.9 in}
Repairable limit: 164 mm {6.5 in}
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OPERATION