Removing/Installing Drive Wheel Hub; Installing Wheel Lock Bracket Onto Wheel Chair - Invacare Arrow RWD Service Manual

PROCEDURE 12
REMOVING/INSTALLING DRIVE
WHEEL HUB (FIGURE 2)
W
NOTE: This procedure can only be performed on 3G
H
storm wheelchairs equipped with the conventional mo-
E
tor/gearbox assembly. On 3G storm wheelchairs
E
equipped with the gearless/brushless motor, the drive
L
wheel hub CANNOT be removed. Return motor to
S
manufacturer for service.
/
Removing
M
O 1. Remove the drive wheel from the wheelchair. Re-
fer to REMOVING/INSTALLING DRIVE WHEELS
T
in this procedure of the manual.
O
R
2. Remove the locknut, washer, keystock and existing
S drive wheel hub from the drive shaft of the motor/gear-
box assembly.
Installing
1. Position the keystock on the drive shaft of the motor/
gearbox assembly.
DO NOT apply more than a one (1)-inch (in length)
thin film of anti-seize compound to the drive shaft.
Applying more than one (1)-inch (in length) can
cause the anti-seize compound to leak resulting
in damage to flooring (carpet, tile, etc.).
2. Apply a thin film of anti-seize compound one (1) inch in
length to the end of the drive shaft.
3. Reinstall drive wheel hub onto the drive shaft of the
motor/gearbox assembly.
Keystock
Drive Wheel
Hub
Washer
Locknut
FIGURE 2 - REMOVING/INSTALLING DRIVE WHEEL
C C C C C A A A A A UTION UTION UTION UTION
UTION
Motor
Gearbox
HUB
NOTE: While installing the drive wheel hub onto the drive
shaft, spin the drive wheel hub to evenly distribute the
anti-seize compound over the entire drive shaft.
4. Reinstall the washer and locknut and torque locknut
to 45 foot pounds (540-inch pounds).
5. Reinstall the drive wheel assembly to the wheel-
chair. Refer to REMOVING/INSTALLING DRIVE
WHEELS in this procedure of the manual.
6. Repeat procedure for the opposite side of the
wheelchair, if necessary.
INSTALLING WHEEL LOCK BRACKET
ONTO WHEELCHAIR (FIGURE 3)
NOTE: This procedure only pertains to third genera-
tion storm wheelchairs with the conventional motor
and gearbox. On third generation storm wheelchairs
with the gearless/brushless motor, the wheel lock
bracket is not required.
1. Remove the two (2) mounting screws closest to the
large wheel that secure the gearbox to the suspen-
sion arm.
2. Line up mounting holes in the wheel lock mounting
bracket with the gearbox mounting holes in the sus-
pension arm.
3. Apply Loctite 242 to the two (2) mounting screws.
4. Reinstall the two (2) mounting screws into the mount-
ing holes of the wheel lock mounting bracket and gear
box and torque to 75-inch pounds.
5. Repeat STEPS 1-4 for opposite wheel lock bracket.
6. Adjust the wheel locks. Refer to ADJUSTING WHEEL
LOCKS in PROCEDURE 9 of the owner's manual,
1081227.
Mounting
Screws
Gearbox
FIGURE 3 - INSTALLING WHEEL LOCK BRACKET
ONTO WHEELCHAIR
58
WHEELS/MOTORS
Wheel Lock
Mounting
Bracket
Suspension
Arm