Replacing Front Fork - Invacare Orbit Owner's Operator And Maintenance Manual

Replacing Front Fork

NOTE: For this procedure, refer to FIGURE 8.2.
1. Remove the front caster assemblies from the wheelchair. Refer to Replacing/Installing
Front Caster Assemblies on page 58.
2. Remove the dust cover.
3. Remove the locknut and nylon washer.
4. Drop the existing fork out of the caster head tube.
5. Slide the new fork into the caster head tube.
NOTE: Check bearing assemblies and replace if necessary.
6. Ensure that fork slides completely into the caster head tube.
Improper positioning of the washer will prohibit the free movement of the forks and
may result in injury to the user.
7. Install nylon washer and secure with locknut.
8. Reinstall the front caster assemblies onto the wheelchair. Refer to Replacing/Installing
Front Caster Assemblies on page 58.
9. To properly tighten caster journal system and guard against flutter, perform the
following check:
A. Tip front of wheelchair off floor.
B. Pivot forks and casters to top of
their arc simultaneously.
C. Let casters drop to bottom of arc
(wheels should swing once to
one‐side, then immediately rest in a
straight downward position).
D. Adjust locknuts according to
freedom of caster swing.
E. Test wheelchair for
maneuverability.
10. Reinstall dust cover.
Part No. 1073955
SECTION 8—FRONT CASTERS
WARNING
Locknut
Nylon
Washer
Caster Fork
Assembly
NOTE: Five‐inch front caster shown only
for clarity.
FIGURE 8.2 Replacing Front Fork
59
Dust Cover
Caster
Headtube
Washer
™
Orbit