SECTION
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.
WARNING
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 |
Locknut
Nylon
Washer
Dust Cover
Caster
Headtube
freedom of caster swing. |
E. Test wheelchair for |
maneuverability. |
10. Reinstall dust cover. |
Caster Fork
Assembly
Washer
NOTE: Five‐inch front caster shown only for clarity.
