Engine Maintenance
85
Compressor/Electric Motor/Jackshaft Belt
Slide the jackshaft or induction alternator away
from the compressor to tighten this belt.
Belts should be tensioned cold and retensioned
cold after 10 hours of unit running.
Gauge tension on new belts should be 72 ± 3.
Gauge tension on used belts should be 67 ± 3.
This tension allows 1/2 in. (13 mm) deflection in
the center of the span.
Water Pump Belt
Adjust tension by adding or removing shims
between pulley sheaves, until the belt allows 1/2
in. (13 mm) of deflection at the center of the span.
IDLER ASSEMBLY
I
1. Sprocket 5. Flatwasher—1/2 SS
2 Idler Bracket 6. Hex Head Screw—1/2-13 UNC x 4.00 STL
3. Special Water—1/2 STL 7. Lockwasher—1/2 SS
4. Pulley
Figure 42: Idler Assembly
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