Chevrolet Light Duty Truck 1973 Service Manual page 82

1A-56 HEATER A N D AIR C O N D IT IO N IN G
Compressor Belt Tension Adjustment
Adjust the compressor belt to the specifications shown in
the Tune-Up chart in the Engine section of the Service
Manual.
NOTE: On some G and Motor Home Chassis
models it may be necessary to increase idler
pulley slack adjustm ent. This may be
3 0 7 - 3 5 0 V - 8 C-K
G MODELS AND MOTOR HOME CHASSIS
4 5 4 V -8 C-K MODELS
Fig. 56-Compressor Mountings
accomplished by (1) Remove and discard the
idler adjustment bolt. (2) Remove the idler
backing plate and elongate all 3 adjusting
slots 1/2 inch inboard or outboard as
required. (3) Reinstall the idler assembly and
adjust belt tension using a lever (screwdriver,
etc.) to move the pulley outboard until proper
belt tension is reached. If the belt is being
LIGHT DUTY TRUCK SERVICE MANUAL