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A4 50 Part No. 1110545
WHEELS
REPLACING FORKS (FIGURE 9)
1. Remove front casters from wheelchair. Refer to REPLACING CASTERS in this section of the
manual.
2. Remove the headtube cap.
3. Remove the locknut and washer(s)/spacer(s).
*NOTE: There may be up to four (4) washers/spacers
on the fork stem above and/or below the headtube.
Note the number and position of these washers for
reinstallation.
4. Drop the fork out of the caster headtube.
5. Slide the new fork into the caster headtube.
NOTE: Check bearing assemblies and replace if
necessary.
6. Ensure that fork slides completely into caster
headtube.
7. Install washer(s)/spacer(s) and secure with
locknut.
WARNING
Improper positioning of the washer will prohibit the free movement of the fork.
8. Reinstall existing/install new front casters onto the wheelchair. Refer to REPLACING CASTERS
in this section of the manual.
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.
WHEELS
SECTION 5
Locknut
*Nylon
Washer(s)
FIGURE 9 - REPLACING FRONT
FORKS
Head Tube
Cap
Caster
Head tube
Fork
*Spacer