11-1
ZR Owner’s Manual
OM_ZR_0913RevA
CHAPTER 11: CASTERS And FORKS
Standard 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.
Replacing Casters
Tools Needed:
• Two #2 Phillips Head Screw Drivers
1. Remove the two Phillips Head screws, C Spring washers and axle that secure the caster to the fork. 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 from the fork.
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.
Caster Cap
Fork
Washer
Nylock Nut
Caster
Axle
Phillips
Head
Screw
Spacer 1
Phillips
Head Screw
Spacer 2
Figure 11-1
Bearing Fork
C Spring
Washer
C Spring Washer
“Bullet” Caster
Housing
Replacing Forks
Tools Needed:
• 9/16” Socket Wrench
I
WARNING
The ZR fork stem is permanently installed in the “Bullet” Caster Housing. Do not attempt to unscrew the fork stem
or the set screw. If it should become necessary to replace the fork stem on these chairs, this repair can only be
performed by TiLite at our factory.
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.