Invacare Lightweight Aluminum Wheelchair manual F R O N T C A S T E R S, Front Casters, Procedure

PROCEDURE 5 FRONT CASTERS

F R O N T

C A S T E R S

This Procedure Includes the Following:

Replacing Front Casters

Installing/Replacing Forks

Caster Headtube Mounting Adjustments

WA R N I N G

After making adjustments, always make sure that parts are properly tight- ened BEFORE using the wheelchair.

REPLACING FRONT CASTERS (FIGURE 1)

1.Remove the hex screw and locknut that secure the existing front caster to the fork.

2.Install the new front caster onto the fork.

3.Reinstall the spacer and washers and securely tighten the new front caster with the existing hex screw and locknut.

WARNING

Make sure both front casters are posi- tioned in the same mounting hole BE- FORE using the wheelchair; otherwise injury can occur.

4.Repeat STEPS 1-3for the opposite front caster if necessary.

ForkLocknut

Washer Hex Screw

Front

Caster

Spacer

Washer

FIGURE 1 - REPLACING FRONT CASTERS

INSTALLING/REPLACING FORKS (FIGURE 2)

1.Remove the existing front caster from the fork.

2.Remove the black dust cover.

3.Remove locknut and large plastic washer.

4.Drop the fork out of the caster headtube.

5.Slide in the new fork.

6.Reassemble, except black dust cover by revers- ing STEPS 1-5.

7.Repeat STEPS 1-6for the opposite front caster, if necessary.

8.To properly tighten fork stems 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.

9.Test wheelchair for maneuverability.

10.Readjust locknuts if necessary and repeat STEPS 8-9until correct.

11.Snap dust caps over the locknut and stem.

Dust Cover

Locknut

Large Plastic

Washer

Caster Headtube

Front Caster

and Fork

FIGURE 2 - INSTALLING/REPLACING

FORKS

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