46
FIGURE 6 - INSTALLING/REPLACING REAR WHEELS
Motor
Driveshaft
Washer
Locking Tab
Washer
Keyway
Keystock
Chamfered
Side of Wheel
Hub
Hex Screw (Apply Loctite 242 and use a Torque
Wrench only to Torque to 90-inch pounds)
TIGHTEN Hex Screw if Locking Tab is not
Parallel with Flat on Head (STEP 9)
Flat on Head
of Hex Screw
Locking
Tab
Locking Tab Parallel
with Flat on Head of
Hex Screw (STEP 9)
Bend Tab up tight against Flat on
Head of Hex Screw (STEP 10)
3. Install the new/existing rear wheel onto the motor drive
shaft. Make sure the chamfered side of the wheel
hub is pointing away from the wheelchair.
4. Install washer onto motor drive shaft.
5. Install the NEW locking tab washer onto the motor
drive shaft. Make sure the locking tab is in line with the
keyway of the rear wheel.
6. Apply Loctite 242 to the hex screw.
7. Install the hex screw. Use a torque wrench only and
torque to 90-inch pounds.
8. Examine head of hex screw and locking tab washer.
Make sure one (1) of the tabs on locking tab washer is
parallel with one (1) of the flats on head of hex screw.
9. If one (1) of the tabs on the locking tab washer is NOT
parallel with one (1) of the flats on the head of the hex
screw (FIGURE 6), TIGHTEN the hex screw until the
closest flat and locking tab are parallel.
W
H
E
E
L
S
/
A
N
T
I
-
T
I
P
P
E
R
PROCEDURE 12
WHEELS/ANTI-TIPPER
8. Disengage the following:
MOTORS w/MOTOR LOCKS - Motor locks. Refer
to DISENGAGING/ENGAGING MOTORS WITH
MOTOR LOCKS in this procedure of the manual.
MOTORS w/CLUTCHES - Clutches. Refer to DISEN-
GAGING/ENGAGING MOTORS WITH CLUTCHES
in this procedure of the manual.
9. Engage the wheel locks and push against the wheel-
chair to determine if the wheel locks engage the rear
wheels enough to hold the wheelchair.
10. Repeat STEPS 3-8 until the wheel locks engage the
rear wheels enough to hold the wheelchair.
11. Engage the following:
MOTORS w/MOTOR LOCKS - Motor locks. Refer
to DISENGAGING/ENGAGING MOTORS WITH
MOTOR LOCKS in this procedure of the manual.
MOTORS w/CLUTCHES - Clutches. Refer to DISEN-
GAGING/ENGAGING MOTORS WITH CLUTCHES
in this procedure of the manual.
REPLACING PNEUMATIC TIRES AND
TUBES - FRONT CASTERS AND
REAR WHEELS
WARNING
DO NOT use your power wheelchair unless it has
the proper tire pressure (p.s.i.). DO NOT overinflate
the tires. Failure to follow these suggestions may
cause the tire to explode and cause bodily harm.
If tires are pneumatic, replacement of tire or tube
MUST be performed by a qualified technician.
NOTE: If front casters or rear wheels are pneumatic, un-
der-inflation causes excessive wear which results in poor
performance of the tires.
INSTALLING/REPLACING REAR
WHEELS (FIGURE 6)
WARNING
NEVER use a locking tab washer more than once.
ALWAYS use a NEW locking tab washer when in-
stalling the rear wheels.
1. Remove the hex screw, lockwasher and washer that
secure the existing rear wheel assembly to the wheel
hub assembly.
2. Use a wheel puller to remove the existing rear wheel
assembly from the motor drive shaft.
NOTE: The keystock in the wheel hub MUST lineup with
the cutout in the gearbox drive shaft.
