11-1
Twist Owner’s Manual
OM_TWIST_0811RevA
CHAPTER 11: CASTERS AND FORKS
I WARNING
Always mount identical size casters and forks on both sides of your chair.
If you ignore this Warning, you may fall, tip
over or lose control of the wheelchair and seriously injure yourself or others or damage the wheelchair.
Standard Forks
Replacing Casters
Tools Needed:
• Two #2 Phillips Head Screw Drivers
1. Remove the two Phillips Head screws, C Spring washers and axle. Use one screw driver to hold one screw in
place and a second screw driver to loosen the other screw. See Figure 11-1.
2. Remove the caster and spacers.
3. Install the new caster, spacers and C Spring washers onto the fork and securely tighten the two screws so there
is no space between the caster, the spacers and the fork sides. Use one screw driver to hold one screw in place
and securely tighten the other screw with the second screw driver.
Note: If your chair has 4” or 5” TiLite Performance casters, make sure that Spacer 2 (which is wider than Spacer 1) is
positioned on the recessed side of the caster, which should be oriented outwards when the casters are in the trailing
position.
Figure 11-1
Bearing Fork
Caster Cap
Fork
Washer
Nylock Nut
C Spring Washer
Phillips
Head Screw
Caster
Spacer 2
Spacer 1
C Spring
Washer
Phillips
Head
Screw
Axle
Fork Stem
Replacing Forks
Tools Needed:
• 9/16” Socket Wrench
1. Remove the casters. See “Standard Forks – Replacing Casters” on page 11-1.
2. Loosen and remove the nylock nut and washer. See Figure 11-1.
3. Remove the old fork and caster cap and install the replacement fork and old caster cap on the fork stem.
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