OP000471
4-57
Inspection, Maintenance and Adjustment
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.
Inspection
1.
Turn upper body so it is at a 90° angle to the tracks.
NOTE:
On rubber crawlers, move machine body so
seam of crawler pad is on the axle center line,
then turn body.
2.
Track tension is checked by jacking up one side of the
excavator. See Figure 70. Place blocking under frame
while taking measurement.
3.
Measure clearance between track roller and track
contact surfaces. Clearance should be approximately 10
- 15 mm (0.39 - 0.59 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 1 complete turn from the fully tightened down
position. Bleed off pressure slowly and keep your body
away from the valve at all times. If there is problem in
the fitting thread, the valve or fitting might be ejected at
high-speed, causing a fatal injury.
Figure 70
FG007704
Figure 71
10~15mm
FG007705
Summary of Contents for DX35Z
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Page 6: ...Table of Contents K1025196E IV Index 8 1 ...
Page 60: ...OP000468 Safety 1 54 ...
Page 90: ...OP000469 Operating Controls 2 30 ...
Page 132: ...OP000470 Operation 3 42 ...
