Q45 V8-4494cc 4.5L DOHC (VH45) (1992)
Fan Clutch: Technical Service Bulletins
Fan To Water Pump Flange - Installation Procedure
Classification:
EM96-002
Reference:
ITB96-046
Date:
October 23, 1996
FAN INSTALLATION TO WATER PUMP FLANGE
APPLIED VEHICLE:
All with water pump mounted fan
SERVICE INFORMATION
The fan mounting flange of the water pump may become loose on the shaft if the fan, fan coupling, or water pump pulley (fan pulley) are not properly
installed during a repair. The incident may be exhibited as a screeching noise from the engine when starting cold. When removing or installing the fan,
fan coupling or water pump pulley always perform the procedure listed below.
SERVICE PROCEDURE
1.
Turn the ignition switch to "off".
2.
Loosen the alternator then remove the drive belt. Do not leave the belt in place and release the drive belt tension by removing the water pump
pulley. (Releasing the drive belt tension by removing the water pump pulley may complicate component re-installation).
3.
Remove the fan, fan coupling, water pump pulley and any other components required for the service you are performing.
4.
Inspect the fan coupling for wobbling (Figure 1), oil leakage or bent/broken bimetal before assembly.
5.
Carefully install the fan, fan coupling and water pump pulley. Torque the M6 x 0.8 nuts and screws securing the fan to the tan coupling and the fan
coupling to the water pump flange according to the table below. Install the drive belt only after the fan and fan coupling to water pump flange
bolts/nuts have been properly torqued.
NOTE:
Proper alignment of these components is essential. Improper alignment will cause them to wobble and may eventually cause the fan to separate
from the water pump causing extensive damage.