Engine Maintenance
100
Engine—Compressor Belt
Adjustment
1. Loosen the idler pulley mounting bolt.
2. Turn the sprocket with a 7/8 in. (22 mm)
wrench to tension the belt.
3. Tighten the idler pulley mounting bolt with a
3/4 in. (19 mm) wrench when the belt is at the
proper tension. Use one of the following
methods to check (or set) the belt tension.
a. The belt tension should be set at a reading
of 70 ± 3 on the Thermo King Belt
Tension Gauge.
b. The belt should deflect 1/2 in. (13 mm) at
the center of the longest (lower) span.
1. Sprocket 5. Flatwasher
2. Idler Pulley Bracket 6. Belleville Washer
3. Fender Washer 7. Screw
4. Idler Pulley Assembly
Figure 52: Engine—Compressor Belt Adjustment
1
2
3
4
5
6
7
ARD041
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