1 Swing the superstructure to the side and raise
the track by using boom down operation and
dozer blade operation. For this movement,
operate the lever slowly.
2 Turn the track slowly in forward and reverse
direction several time. Stop the track while
moving in the reverse direction.
3 Measure the track slack (L) at the center of track
frame, the clearance between the bottom of
track frame and the upper surface of track shoe.
4 Adjust the track tension according to the soil
characteristics.
For more information, see page
287
.
Recommended track tension is as below,
Working condition Clearance ( L)
(mm) (in)
Steel
shoe
General soil 130-140 (5.1-5.5)
Rocky ground 120-130 (4.7-5.1)
Moderate soil like
gravel, sand,
snow, and so on.
140-150 (5.5–5.9)
Rubber
shoe
Rubber track type 63-73 (2.5–2.9)
Rubber pad type 130-140 (5.1-5.5)
1 Bottom side of frame
2 Upper side of shoe
266
Maintenance
Maintenance service, every 50 hours
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