Procedure 7 - Front Casters; Installing/Replacing Six-Inch Front Casters And Forks; Replacing/Repairing Front Caster Tire/Tube; Front Caster Mounting Adjustments - Invacare 9000 JYMNI PEDIATRIC Series Owner's Operator And Maintenance Manual

PROCEDURE 7
This Procedure Includes the Following:
Installing/Replacing Six Front Casters and Forks
F

Replacing/Repairing Front Caster Tire/Tube

R

Front Caster Mounting Adjustments

O
N
T
After ANY adjustments, repair or service and BE-
FORE use, make sure all attaching hardware is
C
tightened securely - otherwise injury or damage
A
may result.
S
NOTE: Refer to PROCEDURE 1 - GENERAL GUIDE-
T
LINES which include GENERAL WARNINGS .
E
R
INSTALLING/REPLACING SIX-INCH
S
FRONT CASTERS AND FORKS
(FIGURE 1)
1. Remove the dust cover.
2. Remove the locknut that secures the fork to the caster
headtube.
3. Drop the front caster and fork out of the caster
headtube.
4. Slide in the new six front caster and fork.
5. Reassemble by reversing STEPS 1-3.
6. Repeat STEPS 1-5 for the opposite front caster.
7. To properly tighten caster journal system and guard
against flutter, perform the following check:
a. Tip back of 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.
WARNING
8. Test wheelchair for maneuverability.
9. Readjust locknuts if necessary, and repeat STEPS
7-8 until correct.
10. Snap dust cover over the locknut and stem.
FIGURE 1 - INSTALLING/REPLACING SIX INCH
FRONT CASTERS AND FORKS
REPLACING/REPAIRING FRONT
CASTER TIRE/TUBE
Replacement of front caster tire or tube MUST be
performed by a qualified technician.
As with any vehicle, the wheels and tires should
be checked periodically for cracks and wear,
and should be replaced.
FRONT CASTER MOUNTING
ADJUSTMENTS
Front caster mounting adjustments MUST be per-
formed by a qualified technician.
26
FRONT CASTERS
Dust Cover
Locknut
Caster Headtube
Front Caster
and Fork
WARNING
CAUTION
WARNING