Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...

Accessory Drive Belts
• Always torque fasteners from the nut end.
For standard capscrews
• Always use the torque values listed in the capscrew
table.
• Reduce torque by 10% when engine oil is used as a
lubricant.
• Reduce torque by 20% if new plated capscrews are
used.
PART 8: MAINTENANCE AND SERVICE
1. Route the new belt around the pulleys, and then rotate
the automatic tensioner so that the idler pulley swings
toward the belt routing. Figure 1 shows an example of
the rotation direction to release the tensioner.
2. Slip the belt around the idler pulley attached to the
automatic tensioner.
3. Release the automatic tensioner.
4. Check the belt alignment on each pulley. The belt must
fall between the flanges of each pulley.
Engine Accessories
Accessory Drive Belts
You can extend the reliability and service life of your vehicle’s
drive belts with proper attention to installation, and
maintenance. 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 this procedure to install an accessory drive belt:
0009
– 180 – Y53-6015 R(08/07)