PART 8: MAINTENANCE AND SERVICE
ENGINE ACCESSORIES
(R05/10)
Y53-6032
– 211 –
Belt route for Caterpillar Engine
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.
Fan Clutch / Fan
WARNING!
Do not work on the fan with the
engine running. The engine fan can engage at
any time without warning. Anyone near the fan
when it turns on could be killed or seriously
injured. Before turning on the ignition, be sure
that no one is near the fan.
Your truck may be equipped with an On/Off or Viscous
Fan Drive. Follow these guidelines to check your engine
fan:
• Check the fan assembly mounting bolts for tightness.
Inspect the fan blades for damage.
On/Off Fan Drives - Check the clutch operation by starting
the engine when it is cold. Idle the engine at about 800
RPM. Listen for air leaks. Check that the fan is not work-
ing while the engine is warming up. When the clutch
engages, note the reading on the vehicle's panel-mounted
coolant temperature gauge. If the fan clutch engages at
low engine temperature or cycles on and off more fre-
quently than it should (receives "false signals"), have the
problem corrected at your dealership.
Y53-6032.book Page 211 Monday, May 24, 2010 3:37 PM
Summary of Contents for Peterbilt 587
Page 1: ......