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

SECTION 4
REPLACING AXLE TUBE (FIGURE 12)
NOTE: There is no need to remove the two (2) camber clamps when replacing the axle tube.
1. Note the position of the camber inserts so they can be installed to the original
position in the new axle tube.
2. Open the camber clamps. Refer to OPENING/CLOSING CAMBER CLAMPS in this
section of the manual.
3. Remove the two (2) rear wheels and camber inserts positioned in the axle tube.
4. Loosen, but do not remove the two (2) set screws that secure the toe adjustment
rings to the axle tube.
5. Pull the existing axle tube through one (1) of the camber clamps.
6. Remove the toe adjustment rings from the existing axle tube.
7. Pull the existing axle tube through the other camber clamp and remove from the
wheelchair.
8. Slide the new axle tube through one (1) of the camber clamps. Make sure the
notches in the axle tube are towards the rear of the wheelchair and the slots in the
axle tube are facing up.
9. Install the toe adjustment rings onto the new axle tube. Make sure the stops on the
toe adjustment rings are facing towards the outside of the wheelchair.
NOTE: DO NOT tighten the set screws that secure the toe adjustment rings to the axle tube at
this time.
10. Slide the new axle tube through the other camber clamp until the end of the axle
tube is flush with the outside of the camber clamp.
NOTE: DO NOT close the quick-release levers or tighten the socket screws that secure the axle
tube to the camber clamps at this time.
NEVER position the camber inserts in the axle tube with more than 3-
inches (12 indexing marks showing) of the camber insert outside of the
axle tube. Otherwise, the camber inserts will not be securely tightened in
the axle tube resulting in possible injury to the user or damage to the
wheelchair.
11. Install the rear wheels and camber inserts into the new axle tube and slide the
camber inserts to the position noted in STEP 1. Make sure there are no more than
3-inches (12 indexing marks) of the camber inserts outside of the axle tube.
12. Slide the indexing ring on the camber insert until it is flush with the camber clamp
NOTE: To maximize rollability: Before using the wheelchair, make sure both camber inserts are
set to the same indexing notch. This will make sure the distance between the rear wheel and the
wheelchair is the same on both sides.
13. Adjust the axle tube. Refer to ADJUSTING THE AXLE TUBE in this section of the
manual.
NOTE: The performance of the wheelchair will be affected if the axle tube has not been adjusted
to correct the toe in/toe out of the wheelchair.
14. Ensure the camber clamps are closed. Refer to OPENING/CLOSING CAMBER
CLAMPS in this section of the manual.
A4™AND A4™TITANIUM
WARNING
42
FRAME
Part No. 1110545