Invacare A-4 User Manual page 70

8 WHEELS
3. Perform one of the following:
A. Short Fork - Install the NEW caster, bolt, locknut and axle spacers onto the fork and securely tighten.
B. Long Fork - Perform the following steps:
i. Determine the desired mounting hole for the caster installation. Refer to DETAIL "A".
ii. Line up the front caster and two spacers with the mounting hole in the fork determined in STEP B-1.
iii. Reinstall the bolt and locknut through the fork, front caster and two spacers.
WARNING
Both front casters MUST be positioned to the same corresponding mounting hole, otherwise injury or damage may occur..
4. Repeat STEPS 1-3 for the opposite caster if necessary.
 If replacing front casters with a different size than what was originally on the wheelchair, the front caster height MUST be adjusted
to keep the wheelchair frame parallel to the floor. Refer to Adjusting Caster Height on page 72. The size of the rear wheels may
also need adjustment. Refer to Handrim Replacement on page 67.
Fork
Bolt
Axle Spacer
NOTE: Only non-suspension short
fork style shown for clarity. All
fork styles install in the same way.
Invacare® A-4® Wheelchair
Locknut DETAIL "A" - LONG FORK MOUNTING POSITIONS
Axle Spacer
Top
Middle
Caster
Bottom
FIGURE 8 Replacing/Adjusting Casters
70
Non Suspension
Top
Middle
Bottom
Suspension
Part No 1110545