Procedure 8 Casters; Adjusting Forks - Invacare Wheelchair Owner's Operator And Maintenance Manual

PROCEDURE 8
This Procedure Includes the Following:

Adjusting Forks

C
After ANY adjustments, repair or service and BE-
A
FORE use, make sure all attaching hardware is
S
tightened securely - otherwise injury or damage
T
may result.
E
R
As with any vehicle, the wheels and tires should
S
be checked periodically for cracks and wear
and should be replaced when necessary.
ADJUSTING FORKS (FIGURE 1)
1. Remove the dust cover from the caster headtube.
2. To properly tighten caster journal system and guard
against flutter, perform the following check:
a. Tip back the wheelchair to floor.
b. Pivot both 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.
3. Test wheelchair for maneuverability.
4. Readjust locknuts if necessary, and repeat STEPS
1-3 until correct.
5. Snap dust cover into the caster headtube.
WARNING
CAUTION
Dust Cover
Locknut
Nylon Washer
FIGURE 1 - ADJUSTING FORKS
22
CASTERS
Caster
Headtube
Fork
Caster