OP000599
Inspection, Maintenance and Adjustment
4-82
TRACK TENSION
Track shoe link pins and bushings wear with normal usage,
reducing track tension. Periodic adjustment is necessary to
compensate for wear and it may also be required by working
conditions.
1.
Track tension is checked by jacking up one side of the
excavator. See Figure 140. Place blocking under frame
while taking measurement.
2.
Measuring the distance (A, Figure 141) between the
bottom of the side frame and the top of the lowest crawler
shoe. Recommended tension for operation over most
types of terrain is 320 - 340 mm (12.60 - 13.39 in)
NOTE:
This measurement can be thrown off if there is
too much mud or dirt or other material in the
track assembly. Clean off the tracks before
checking clearance.
WARNING!
Safely measuring track tension requires two people. One
person must be in the operator's seat, running the controls
to keep one side frame in the air, while the other person
makes dimensional checks. Take all necessary precautions
to make sure the machine won't move or shift position
during service. Warm up the engine to prevent stalls, travel
the excavator to an area that provides level, uniform ground
support and/or use support blocks when necessary.
The track adjusting mechanism is under very
high-pressure. NEVER release pressure too suddenly. The
grease cylinder valve should never be backed off more than
one complete turn from the fully snugged down position.
Bleed off pressure slowly and keep your body away from
the valve at all times.
FG000345
90 ~ 110
Figure 140
A
FG000162
Figure 141
Summary of Contents for DX140LC
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Page 67: ...OP000597 2 3 Operating Controls ...
Page 87: ...OP000597 2 23 Operating Controls ...
Page 122: ...OP000597 Operating Controls 2 58 CD Player Optional AST DIR FG000109 Figure 123 ...
Page 184: ...OP000598 Operation 3 48 ...
Page 193: ...OP000599 4 9 Inspection Maintenance and Adjustment ...
Page 272: ...OP000599 Inspection Maintenance and Adjustment 4 88 ...
Page 278: ...OP000600 Transportation 5 6 ...
Page 284: ...OP000013 Troubleshooting 6 6 ...
Page 292: ...OP000601 Specification 7 8 ...