Chevrolet 4500 HD 2023 Manual page 347

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346
Technical Data
Engine Drive Belt Routing
Fan Belt and Air Conditioning
Compressor Belt
See the Maintenance Schedule 0 312.
No.
Name
1
Fan belt
2
Fan pulley
3
A/C belt
4
A/C compressor
5
Tension pulley
6
Crank pulley
No.
Name
7
Alternator
If your air conditioning system is
functioning properly, it is not necessary to
remove and replace the refrigerant or
compressor oil.
A V-ribbed belt is used for the fan belt.
This type of belt requires the tension to
be adjusted more accurately than is
required with the conventional V belt.
Inappropriate tension could cause the belt
to make noise or break. When the fan
belt is damaged, electricity is not properly
generated or becomes a cause of engine
overheating. You must check the tension
of the fan belt carefully.
Use dealer-certified genuine parts when
changing the fan belt.
Have the vehicle inspected and serviced at
your dealer.
The air conditioning drive belt,
if equipped, must be adjusted after fan
belt adjustment. If the belt is not
adjusted properly, the A/C belt may
experience excessive tension, and possible
premature failure.

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