Procedure 9 - Wheels; Replacing Pneumatic Tires/Tubes - Drive Wheels/Casters; Removing/Installing Drive Wheels - Invacare Pronto R2 Series Servise Manual

PROCEDURE 9
This Procedure Includes the Following:
Replacing Pneumatic Tires/Tubes -
Drive Wheels/Casters

Removing/Installing Drive Wheels

W
Removing/Installing Drive Wheel Hub
H
Replacing Casters
E
Replacing Forks
E
L
After ANY adjustments, repair or service
S
and BEFORE use, make sure all attaching
hardware is tightened securely - otherwise
injury or damage may result.
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
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 a qualified
technician.
NOTE: If drive wheels or casters are pneumatic, under-
inflation causes excessive wear which results in poor per-
formance of the tires.
REMOVING/INSTALLING DRIVE
WHEELS
NEVER use a locking tab washer more than
once. ALWAYS use a NEW locking tab
washer when installing the drive wheels.
12-inch Drive Wheel (FIGURE 1)
REMOVING.
1. The tab of the locking washer that is bent 90
the head of the mounting screw MUST be flattened
before the mounting screw can be removed.
2. Remove the hex screw, locking tab washer and washer
that secure the existing front wheel to the wheel hub.
WARNING
CAUTION
WARNING
WARNING
o
INSTALLING.
NOTE: The keystock in the wheel hub MUST lineup with
the cutout in the gearbox drive shaft.
1. Install new/existing front 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.
Keystock
Chamfered
Side of Wheel
Hub
Locking Tab
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 9)
Flat on Head
of Hex Screw
up against
FIGURE 1 - REMOVING/INSTALLING 12-
28
Motor
Driveshaft
Keyway
Washer
Locking Tab Parallel
with Flat on Head of
Hex Screw (STEP 9)
Locking
Tab
Bend Tab up tight against Flat on
Head of Hex Screw (STEP 10)
INCH DRIVE WHEELS
WHEELS