Engine Maintenance
81
Belts
The unit uses only two belts to transfer power
from the engine and the electric motor to the
alternator, compressor, and evaporator fans.
Engine/Electric Motor Belt
The engine/electric motor belt is a 3V belt that
also drives the engine side evaporator fan. Use the
following procedure to adjust this belt.
1. Loosen the idler pulley mounting bolt.Loosen
the locknut on the idler pulley adjustment bolt.
This bolt is located directly above the idler
pulley on the idler pulley mounting bracket.
2. Turn the idler pulley adjustment bolt to obtain
the proper belt tension (field reset—55 to 60
on TK gauge, see Tool Catalog).
Tighten the locknut on the idler pulley adjustment
bolt and tighten the idler pulley mounting bolt.
NOTE: Pulley and
belt alignment is very
critical for poly-v
belts. Feel pulleys
with hand to see that
belt is fully seated in
pulley.
Backside idler
is crowned to
help pull belt to
center of idler.
1. Engine Clutch Pulley 6. Alternator Pulley
2. Locate Belt Tension Gauge Here 7 Evaporator Fan Pulley (Flat) Crowned
3. Evaporator Fan Pulley (Grooved) 8. Compressor Pulley
4. Idler (Backside) 9 Electric Motor
5. Locate Belt Tension Gauge Here 10. Belt Flop-Stop Idler
Figure 43: Front View Belt Arrangement
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