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Checking and Adjusting the Track
Tension
Service Interval: After the first 50 hours
Every 100 hours
To check the tension of each track, place 20.4 kg (45
lb) on the track midway between the front road wheel
and the drive wheel. The track should flex no more
than 0.6 to 1 cm (1/4 to 3/8 inch). If it does, adjust the
track tension using the following procedure:
Figure 55
1.
Park the machine on a level surface, engage the
parking brake, and lower the boom.
2.
Shut off the engine and remove the key.
3.
Loosen the jam nut on the track tensioning bolt
and the clamp bolts on the tension arm
56).
Figure 56
1. Tensioning bolt
2. Jam nut
4.
Torque the tensioning bolt to 32.5 to 40 N∙m (24
to 30 ft-lb) to tighten the track
5.
Ensure that the track deflects less than 0.6 to 1
cm (1/4 to 3/8 inch) when 20.6 kg (45 lb) of force
g007833
(Figure
g007825
3. Clamp bolts
(Figure
56).
is applied to the track span. Adjust the torque on
the tensioning bolt as needed.
6.
Tighten the jam nut.
7.
Tighten the clamp bolts and torque to 102 N∙m
(75 ft-lb).
40
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