Komatsu D51EX-24, Operation & Maintenance Manual

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METHOD FOR MEASURE LINK PITCH
1.
Put a wooden block, etc. between the track shoe and
sprocket to eliminate the sag of the track.
2.
Measure length (L) of 4 link pitches in a straight portion at
least 2 links apart from master link (A).
1/4 of the measured value is the link pitch.
Standard link pitch (P): 175.3 mm
Turning limit link pitch of bushing: 178 mm
The master link has no link window.
REMARK
The decimal portion of the measured value of link pitch
may be different from standard link pitch (P), depending on
the measurement accuracy and machining tolerance, even
if the track is not worn. Do not judge the track is worn by
only the value measured now, but judge by the trend of the
later measured values.
METHOD FOR MEASURE GROUSER HEIGHT
Eliminate the sag of the track, and measure at the center of the
track.
Standard dimension (h): 55 mm
Repairable limit: 25 mm
MACHINE OPERATIONS AND CONTROLS OPERATION
3-180