SECTION 05: COOLING SYSTEM
16
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version – Rev.2 April 2016)
11. CHARGE AIR COOLER LEAKAGE
Spec for CAC acceptable leakage:
“The CAC is considered acceptable if it can hold
30 psi (206 kPa) gauge pressure with less than
5 psi (34.5 kPa) loss in 15 seconds after turning
off the hand valve.”
NOTE
This spec does not apply if there is any
evidence that the leak was caused by a
foreign object impact.
12. COOLING FAN DRIVE MECHANISM
COOLING FAN DRIVE INSTALLATION
Ref
Note
Torque lbs-ft
1
Use Loctite 243
16 (12x)
2
60
(4x)
3
35
(2x)
4
32
(6x)
5
Use Loctite 243
16 (6x)
FIGURE 29:
COOLING FAN DRIVE MECHANISM
05123B
12.1 MOUNTING THE DRIVE BELT
To install the cooling fan drive belt, proceed as
follow:
WARNING
Turn the ignition switch and set rear start
selector switch to the OFF position to prevent
accidental starting of the engine.
WARNING
Potential Accident Risk. Always use extreme
caution when working in the vicinity of hot,
rotating or moving parts.
1. Wrap the new drive belt around the fan drive
mechanism pulley, the idlers and the
automatic tensioner idler as shown on figure
26.
FIGURE 30: DRIVE BELT ROUTING (VOLVO D13
ENGINE)
2. Rotate the automatic tensioner in clockwise
direction to relieve tension on the belt and
hold the tensioner in that position (Figure 30).
3. Finally, place the drive belt around the engine
crankshaft pulley.
4. Release the tensioner slowly and let it return
to its natural position.
12.2 DRIVE PULLEY AND UNIVERSAL JOINT
SHAFT
To disconnect the universal shaft, proceed as
follow:
WARNING
Turn the ignition switch to the OFF position
and set rear start selector switch to the OFF
position 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 fan drive pulley. Gain access to
the 6 mounting bolts from behind the pulley,
through the opening in the cast aluminum
support (Figure 31).
