SHOP MANUAL
Ch 5 page 51
HYDRAULIC SYSTEM
The Fan Drive Motor is located at the front end of the engine,
just behind the cooler package
Access is obtained by removing the bonnet.
Removal:
Drain the cooling system.
Remove the upper coolant and charge air hoses from
cooler package.
Remove the two bolts securing the cooler package to
the dumper frame.
Remove the bracket securing the cooler package to
the engine by unscrewing the bolts.
Unscrew the two upper bolts, and loosen the two lower
bolts securing the fan unit support bracket to cooler package.
Cooler package can now be tilted forwards, and the fan unit
support bracket tilted rearwards to give more space for
further removal of parts.
Thoroughly clean the fan drive motor and the area
around for any accumulated dirt.
Remove fan.
When removing the fan drive motor the fan can be left standing inside the radiator shell assembly, using rags to
protect radiators.
Otherwise the fan can be lifted out from cooler package.
Place a container below the motor to catch any hydraulic fluid spilt during removal.
Mark hydraulic lines for proper location and plug as they are removed from motor.
Remove the hydraulic tubing attached to the motor.
Unscrew the eight bolts securing the motor to the support bracket, and the motor can be removed for exchange
or overhaul. Pull cooler package and fan unit support bracket forwards, and pull fan drive motor backwards If the
motor is exchanged, save the connectors attached to the valve body.
Installation
Check the condition of the connector seals, replace if necessary. Install the connectors in motor body, using a
light coat of oil on the seals and tighten.
Install fan drive motor in support bracket, and tighten the eight bolts.
Attach the hydraulic tubing to the motor.
Position key in motor shaft slot, and slide fan in position on shaft. Tighten axle nut, and secure with cotter pin.
Replace fan unit support bracket on cooler package, and tighten the four bolts.
Replace the cooler package securing bolts, and tighten.
Install the coolant and air hoses between engine and cooler package.
Control
Before startup - Check that all connections are located in the same positions as before removal, and that all
hoses and tubes are correctly routed.
Perform startup test procedure. Ref. section: Startup test procedure.
Fan Drive Motor
Figure 44
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