Section J - Tracks
Track Damage
Types of Rubber Track Damage
J-26 J-26
9803-9570-4
Inner Track Rubber - Cracks
Cause:
1 Excessive tension of the rubber
2 Excessive vibration whilst the machine remains
stationary, for example using an auxiliary attachment
such as a hammer.
Prevention:
1 Check the tension regularly.
2 Do not let the machine sit too long in the same
position when operating in these conditions. Move the
machine from time to time so that the pressure of the
vibrations is not always felt on the same place of the
track.
Fig 16.
Additional Notes:
The track can be used as long as the cracks do not reach
the metallic components. When the cracks expose the
steel cords, the track must be replaced or repaired.
Miscellaneous - Not Engaging Correctly
Cause:
1 Excessive abrasion of the sprocket teeth.
2 Excessive tension of the track leading to incorrect
track pitch.
Prevention:
1 Make sure that the sprocket is genuine JCB, ensure
sprocket is in good condition.
2 Check the track tension regularly (as recommended
in service schedules).
Miscellaneous - Detracking
Cause:
1 Low track tension.
2 The rollers are worn out and the track is not correctly
guided.
3 Sharp bends (shearing stress).
4 Machine working following a hillside which weathers
or is soft.
Prevention:
1 Check the tension regularly.
2 Check the rollers and running gear components in
accordance with the recommended service intervals.
3 Drive carefully on hard surfaces like concrete, asphalt
etc.
4 Make sure that ground is firm when working along a
hillside and in any case drive carefully.
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