Idler Replacement - PREVOST H3-41 Maintenance Manual

SECTION 05a: H3 SERIES COOLING SYSTEM
FIGURE 36: COOLING FAN DRIVE MECHANISM
FIGURE 37: DISMOUNTING FAN DRIVE PULLEY
12.2

IDLER REPLACEMENT

If an idler is defective, replace as follow:
WARNING
Set the ignition to the OFF position and
remove the key from the contact switch to
prevent accidental starting of the engine.
PA1615 Maintenance Manual All Series | Section 05a revised September 2016
24
FIGURE 38: PULLEYS ARRANGEMENT
1. Remove the protective cap (replace with a
new one).
2. Unscrew the idler mounting bolt.
3. Replace idler with a new one.
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CAUTION
When installing the idler, make sure it rests
perfectly against the bearing surface on the
cast aluminum support. If not, the drive belt
may slip out of the idler. See figure below.
05123C
FIGURE 39: IDLER MOUNTED ON THE CAST ALUMINUM
SUPPORT
4. Tighten the new idler on the cast aluminum
support.
5. Place a new protective cap.
TORQUE: 32 lb-ft (43 Nm)
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