Drive Belts
Drive belts typically stretch and wear during their serv-
ice life. The fan and A/C belts should be checked for
tension, condition and presence daily prior to operating
your machine.
To check fan and A/C belt tension:
1. With the engine cold and off, remove the key from
the ignition to avoid accidental start.
2. Lift the hood at the rear of the machine and check
to make sure the fan belts are present on the pul-
leys.
3. Lay a straight edge across the alternator and crank
pulleys and apply a force of 10 lbs (4.5 kg) mid-
way between the pulleys. (fig. 11-36)
4. Measure the distance from the bottom of the
straight edge to the top surface of each belt
(deflection). Belt deflection should measure (.39in,
.99cm) if properly tensioned.
5. If the belts are too loose or too tight, adjust the
tension until correct.
6. Also visually inspect the belts. If they appear
excessively worn, or cracked, replace them.
Note: Replace the belts as a pair.
To adjust fan or A/C belt tension:
1. Make sure the engine is cold, off, and the key has
been removed from the ignition to avoid accidental
start.
2. Lift the hood at the rear of the machine and loosen
the bolts securing the alternator or A/C pump
slightly to allow the alternator or A/C pump to
pivot. (fig. 11-37, 11-38)
3. Once loose, use a small pry bar as a lever to force
the alternator or A/C pump against the belt(s) to
increase belt tension to the appropriate level, then
tighten bolts to specification. (fig. 11-38, 11-39)
4. Check the tension by following the procedure listed
previously on this page.
5. Readjust belt tension as necessary until tension is
correct.
11-17
Compact Track Loader
11. Maintenance
Alternator
Bolts
A/C pump
Bolts
Pry bar
11-36
11-38
11-39
11-37
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