ACCESSORY DRIVE
TABLE OF CONTENTS
page page
DRIVE BELTS
DIAGNOSIS AND TESTING - ACCESSORY
DRIVE BELT ..........................5
REMOVAL .............................7
INSTALLATION ..........................7
BELT TENSIONERS
DESCRIPTION ..........................8
OPERATION ............................8
DRIVE BELTS
DIAGNOSIS AND TESTING - ACCESSORY
DRIVE BELT
VISUAL DIAGNOSIS
When diagnosing serpentine accessory drive belts,
small cracks that run across the ribbed surface of the
belt from rib to rib (Fig. 1), are considered normal.
These are not a reason to replace the belt. However,
cracks running along a rib (not across) are not nor-
mal. Any belt with cracks running along a rib must
be replaced (Fig. 1). Also replace the belt if it has
excessive wear, frayed cords or severe glazing.
Refer to ACCESSORY DRIVE BELT DIAGNOSIS
CHART for further belt diagnosis.
NOISE DIAGNOSIS
Noises generated by the accessory drive belt are
most noticeable at idle. Before replacing a belt to
resolve a noise condition, inspect all of the accessory
drive pulleys for contamination, alignment, glazing,
or excessive end play.
Fig. 1 Belt Wear Patterns
1 - NORMAL CRACKS BELT OK
2 - NOT NORMAL CRACKS REPLACE BELT
WG ACCESSORY DRIVE 7a - 5
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