Procedure 6 - Wheels; Replacing Pneumatic Tires/Tubes - Drive Wheels/Casters; Removing/Installing Drive Wheels - Invacare Power 9000 Service Manual

WHEELS
This Procedure Includes the Following:
Replacing Pneumatic Tires/Tubes -
Drive Wheels/Casters

Removing/Installing Drive Wheels

Replacing Casters
Replacing Forks
WARNING
After ANY adjustments, repair or service
and BEFORE use, make sure all attaching
hardware is tightened securely - otherwise
injury or damage may result.
CAUTION
As with any vehicle, the wheels and tires
should be checked periodically for cracks
and wear and should be replaced.
REPLACING PNEUMATIC TIRES/
TUBES - DRIVE WHEELS/CASTERS
WARNING
DO NOT use your 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 an
Invacare dealer or qualified technician.
NOTE: If drive wheels or casters are pneumatic,
under-inflation causes excessive wear which results in
poor performance of the tires.
REMOVING/INSTALLING DRIVE
WHEELS (FIGURE 1)
WARNING
NEVER use a locking tab washer more
than once. ALWAYS use a NEW locking tab
washer when installing the drive wheels.
Otherwise injury or damage may result.
Removing
1. Remove the hex screw, locking tab washer and washer
that secure the existing drive wheel to the wheel hub.
2. Use a wheel puller to remove the existing drive wheel
from the motor drive shaft.
Loctite - Registered trademark of Loctite Corporation.
Installing
NOTE: The keystock in the wheel hub MUST lineup with
the cutout in the gearbox drive shaft.
1. Install new/existing drive wheel onto the motor drive
shaft. Make sure the chamfered (angled in) side of
the wheel hub is pointing away from the wheelchair.
2. Install washer onto motor drive shaft.
3. Install the NEW locking tab washer onto the motor
drive shaft. Make sure the locking tab is in line with the
keyway of the front wheel.
®
4. Apply Loctite 242 to the hex screw.
5. Install the hex screw. Use a torque wrench only and
torque to 90-inch pounds.
6. Examine the head of the hex screw and the locking tab
washer. Make sure one (1) of the tabs on the locking
tab washer is parallel with one (1) of the flats on the
head of the hex screw.
Keystock
Chamfered
Side of Wheel
Hub
Locking Tab
Washer
Washer
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 7)
Flat on Head
of Hex Screw
Bend Tab up tight against Flat on
Head of Hex Screw (STEP 8)
FIGURE 1 - REMOVING/INSTALLING
DRIVE WHEELS
13
PROCEDURE 6
Motor
Driveshaft
Keyway
Locking Tab Parallel
with Flat on Head of
Hex Screw (STEP 6)
Locking
Tab
W
H
E
E
L
S