4 ADJUSTMENTS
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35
4.6. REAR WHEELS
4.6.1. CHANGING THE WHEEL MODEL
Changing the floor-to-seat height may involve changing the rear wheel diameter. To do
this:
a)
THREADED AXLES:
1. To remove the wheels, loosen the screw (
A
) and nut (
B
), using a
3/4 in. open-end
wrench
(see Figure 14-B).
2. To reassemble the wheel, screw it back on, using a new ½-20 UNC nut. Avoid
over-tightening the assembly, as it may interfere with wheel rotation.
b)
QUICK RELEASE AXLES:
1. Hold down the button (
A
) and pull the wheel towards you by the centre (see Figure
14-C);
2. Proceed in the same way to replace the wheel, making sure that the axle is locked
in its housing by the stop pin (
B
). Adjust the depth of the nut if necessary (see
note).
Figure 14-B: Threaded axle
Figure 14-C: Quick release axle
Make sure the stop pin on the two (2) rear wheels is released
before using the wheelchair. The stop pins MUST protrude
from the wheel axle spacer for a secure lock. Keep the stop
pins clean.