Invacare ARROW MWD - Manual (Page 56)

56
PROCEDURE 12 WHEELS/MOTORS
REMOVING/INSTALLING DRIVE
WHEEL HUB (FIGURE 1)
NOTE: This procedure can only be performed on sec-
ond generation storm wheelchairs with the conven-
tional motor/gearbox assembly. On second genera-
tion storm wheelchairs with the gearless/brushless
motor, the drive wheel hub CANNOT be removed.
Return motor to manufacturer for service.
Removing
1. Remove the drive wheel from the wheelchair. Refer to
REMOVING/INSTALLING DRIVE WHEELS in this
procedure of the manual.
2. Remove the locknut, washer, keystock and existing
drive wheel hub from the drive shaft of the gearbox.
Installing
1. Position the keystock on the gearbox drive shaft.
CAUTION
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 gearbox drive shaft.
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 wheelchair.
Refer to REMOVING/INSTALLING DRIVE WHEELS
in this procedure of the manual.
6. Repeat procedure for the opposite side of the wheel-
chair, if necessary.
Gearbox
Wheel Lock
Mounting
Bracket
Mounting
Screws
FIGURE 2 - INSTALLING WHEEL LOCK BRACKET
ONTO WHEELCHAIR
Suspension
Arm
INSTALLING WHEEL LOCK BRACKET
ONTO WHEELCHAIR (FIGURE 2)
NOTE: This procedure only pertains to second gen-
eration storm wheelchairs with the conventional mo-
tor and gearbox. On second generation storm wheel-
chairs 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 suspension arm.
2. Line up mounting holes in the wheel lock mounting bracket
with the gearbox mounting holes in the suspension arm.
3. Apply Loctite 242 to the two (2) mounting screws.
4. Reinstall the two (2) mounting screws into the mounting
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.
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