PART 8: MAINTENANCE AND SERVICE
PB1319 (CAT. NO. 5296 ) —153— 22-01691 (R02/02)
Engine Accessories
Accessory Drive Belts
You can extend the reliability and service life of your vehicle’s drive
belts with proper attention to installation, adjustment, and mainte-
nance. Neglect could cause belt failure. The result could be the loss
of the electrical or air system as well as possible engine damage from
overheating. So it’s a very good idea to check your belts frequently
and replace them as soon as you detect trouble.
Follow the procedure below to install an accessory drive belt:
1. Loosen the pulley bracket(s) and shorten the distance between the
pulley centers. Install the new belt without forcing it. Do not roll or
pry the belt over the pulley.
Pulley Brackets
2. Check the pulley alignment and adjustment if necessary. Pulley
misalignment must not be more than 1/16 in. for each 12 inches of
belt free span (1.5 mm for each 300 mm of belt free span). Belt
free span is measured between pulley centers.
3. Check the riding depth. Belt riding depth should not vary more
than 1/16 in. (1.5 mm) on match belt sets.
4. Check that the belt does not ride on the bottom of the pulley
groove, and that the outside edge of the belt does not stick out
more than 1/16 in. (1.5 mm) beyond the outside edge of the pulley.
CAUTION: When installing bolts on the frame, use only
metric grade 10.9 bolts of the proper length.
02952
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