Cooling Fan Drive Mechanism; Drive Pulley And Universal Joint Shaft; Idler Replacement - PREVOST H3-41 Maintenance Manual

SECTION 05b: X3 SERIES COOLING SYSTEM

13. COOLING FAN DRIVE MECHANISM

FIGURE 21: COOLING FAN DRIVE MECHANISM
13.1 DRIVE PULLEY AND UNIVERSAL JOINT
SHAFT
To disconnect the universal shaft, proceed 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.
1. Unwrap the drive belt from around the pulley
(see paragraph MOUNTING THE DRIVE
BELT).
2. Dismount the drive pulley. Gain access to the
6 mounting bolts from behind the pulley,
through the opening in the cast aluminum
support (Figure 22).
3. Unscrew and remove the universal joint shaft
mounting bolts (6) at the right angle gearbox.
4. Slowly, move the shaft toward the rear of the
vehicle.
5. Finally, dismount the universal joint shaft from
the drive pulley (6 bolts).
22
PA1615 Maintenance Manual All Series
Installation of the universal joint shaft is the
same as removal, but in reverse order.
FIGURE 22: PULLEY AND SHAFT

13.2 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.
1. Remove the protective cap (replace with a
new one).
2. Unscrew the idler mounting bolt.
3. Replace idler with a new one.
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 of the idler. See following figure.
FIGURE 23: IDLER MOUNTED ON THE CAST ALUMINUM
SUPPORT
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Section 05b revised September 2016
TORQUE: 16 lb-ft (22 Nm)
05123B