Pg. 4
2) WHEELS
Once a month or more check your wheels for broken or loose spokes. Keeping your
wheels true helps the overall performance of your chair. To replace a broken spoke, first
remove tire, tube and rim liner to expose the spoke nuts. You should now be able to
remove the broken spoke. Install the new spoke and nut. Spin the wheel as you tighten
the nut, checking for wheel run-out. Have your wheels professionally trued if the run-out
is not acceptable.
Check that the wheel bearings spin freely with no grinding or flat spots. The bearings are
sealed and require no lubrication. When replacing the bearings, make certain they are
fully seated in their bore, if not, you will have difficulty installing the axle
NOTE: The use of aluminum spoke guards on offensive chairs may cause the wheel to
offset from center as the aluminum applies pressure to the outboard spokes, which has the
same effect as tightening the outboard spokes. DO NOT ATTEMPT TO ADJUST THE
AXLE SLEEVE TO OVERCOME THIS PROBLEM AS DAMAGE MAY OCCUR
3) AXLES, AXLE RECEIVERS & JAMB NUTS
Keep your axles clean and properly adjusted. Adjust the axle by holding the flats at the
axle end with a 7/16” (9/16”on 5/8” axles) wrench while turning the adjusting nut with a
3/4” (15/16” on 5/8” axles) wrench. The axle is adjusted correctly when you can feel a
VERY SLIGHT amount of play with the wheel fully inserted into the axle sleeve. If the
axle is adjusted too tight, the detent ball won’t be able to fully deploy, allowing the axle
to come loose.
The axle receiver and jamb nut are installed with high strength ‘red’ #271 loc-tite, so
they SHOULD never need tightening. A red ‘reference’ line is painted across the jamb
nut and the camber tube bung to indicate if loosening of the jamb nut has occurred.
CAUTION: DO NOT ATTEMPT TO ADJUST THE AXLE RECEIVER OR
OVERTIGHTEN THE JAMB NUT AS DAMAGE WILL OCCUR.
PLEASE CALL US FIRST IF YOU FEEL YOU HAVE A DAMAGED RECEIVER!
If the axle receiver has become damaged and must be replaced, the following procedure
MUST be followed or damage may occur. Before removing, measure the distance the
receiver protrudes from the camber tube as the new receiver MUST be installed at the
same distance. NOTE: see page 8 for default reveal distance. Using a high temperature
heat gun, heat the sleeve end of the camber tube, from the end to approximately 3”
toward the center. Depending on the wattage of the heat gun, you may have to apply heat
from 5 to 15 minutes. If possible, use the jamb nut to remove the axle receiver. If the
jamb nut turns before the receiver, remove the nut completely to allow more wrench
access to the receiver. Continue to apply heat until the loc-tite begins to soften allowing
you to turn the receiver. Before installing a new receiver, all remaining loc-tite MUST be
removed. Apply #271 Loc-tite in a zig-zag pattern from the bottom to approx. 1/2" from
