Adjusting The Axle Tube - Invacare A4 Owner's Operator And Maintenance Manual

FRAME
ADJUSTING THE AXLE TUBE (FIGURE 8)
QUICK-RELEASE LEVERS - Make sure the quick-release levers are in the
CLOSED position BEFORE using the wheelchair, otherwise personal injury
or damage to the wheelchair may occur.
STANDARD AND SUSPENSION CAMBER CLAMPS - Make sure the hex
screws are securely tightened BEFORE using the wheelchair, otherwise
personal injury or damage to the wheelchair may occur.
DO NOT close the quick-release levers or tighten the socket screws or hex screws
without camber inserts in the axle tube. Damage to the axle tube will occur.
NOTE: Before performing this procedure, make sure the camber inserts are positioned to the
lowest degree of camber. Refer to REPOSITIONING CAMBER INSERTS (ADJUSTING REAR WHEEL
CAMBER) in this section of the manual.
NOTE: Stand behind the wheelchair to determine LEFT or RIGHT.
1. If necessary, open BOTH camber clamps. Refer to OPENING/CLOSING CAMBER
CLAMPS in this section of the manual.
2. Loosen the set screw that secures each toe adjustment ring to the axle tube
(FIGURE 8).
3. Using an "L" square, rotate the axle tube until the flat edge of the camber insert is at
a 90° angle with the ground/floor as shown in FIGURE 8.
4. Close the RIGHT camber clamp. Refer to OPENING/CLOSING CAMBER clamps in
this section of the manual.
5. Rotate the LEFT toe adjustment ring until the tab stops against the LOWER edge of
the camber clamp.
6. Securely tighten set screw on LEFT toe adjustment ring.
7. Measure the distance between the rear of the rear wheels and front of the rear
wheels at the centerline of the rear wheels. Refer to DETERMINING TOE IN/TOE
OUT in this section of the manual.
8. Perform one (1) of the following:
A. TOE IN/TOE OUT MEASUREMENT IS WITHIN ±1/8-INCH - Proceed
to STEP 8.
B. TOE IN/TOE OUT MEASUREMENT IS NOT WITHIN ±1/8-INCH -
Repeat STEPS 1-7 until toe in/toe out measurement is within ±1/8 inch.
9. Open the RIGHT camber clamp. Refer to OPENING/CLOSING CAMBER CLAMPS in
this section of the manual.
10. Reposition the camber inserts to the highest degree of camber. Refer to
REPOSITIONING CAMBER INSERTS (ADJUSTING REAR WHEEL CAMBER) in
this section of the manual.
11. Repeat STEP 3.
12. Close the LEFT camber clamp. Refer to OPENING/CLOSING CAMBER CLAMPS in
this section of the manual.
13. Rotate the RIGHT toe adjustment ring until the tab stops against the UPPER edge of the
camber clamp.
14. Securely tighten set screw on RIGHT toe adjustment ring.
Part No. 1110545
WARNING
CAUTION
35
SECTION 4
A4™AND A4™TITANIUM