FINAL DRIVE
7.14
FRONT GEARCASE
OPERATION FOR (4X4 &
6X6
-- CENTRALIZED
HILLIARD)
Normal Operation: With the AWD switch off the
vehicle is only driving the rear wheels (2 wheel drive).
When the A WD switch is activated it engages the
Hilliard and locks both front wheels and we then have,
T rue All Wheel Drive.
Coil
Cover
Output
Hub
Armature
Plate
Engagement: When the AWD switch is activated it
charges the coil. It then charges an armature plate
that is keyed to a roller cage that contains 14 rollers
which are forced in by an external cam. The 14 rollers
engage themselves to the output hubs that link both
front axles. The vehicle now has T rue All Wheel Drive.
CAUTION: If the rear wheels are spinning, release
the throttle before turning the A WD switch on. If AWD
is engaged while the wheels are spinning, severe
drive shaft and clutch damage could result.
Roller Cage
& Bearings
Output
Hub
Armature
Plate
Disengagement: As soon as the front and rear
wheels gain traction and are rotating at very close to
the same speed the front wheels will overdrive the
output hubs and the rollers are forced outward,
disengaging A WD. The vehicle is now back to rear
wheel drive.
Roller Cage and Bearing’ s Rotate Inward and
Grip the Output Hub for AWD Engagement
Output Hub
Rollers
Roller Cage
Roller Cam
FRONT GEARCASE
REMOVAL (4X4 &
6X6)
1. Stop engine, place machine in gear and set parking
brake.
2. Loosen right front wheel nuts slightly.
3. Elevate and support machine under footrest/frame
area.
CAUTION: Serious injury may result if machine tips
or falls. Be sure machine is secure before beginning
this service procedure. Wear eye protection when
removing and installing bearings and seals.
4. Remove right wheel nuts and wheel.
5. Remove cotter pin, lower ball joint nut, and A-arm
from ball joint.
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