6.6.2 Replacing the castor fork
IMPORTANT!
The following sub-assembly contains pre-coated screws.
– Only use original Invacare spare parts.
– If the screws need adjustment, replace by new ones.
Socket spanner (10 mm) / Wrench (17 mm)
■■□
1.
Remove the castor wheel, see
.
2.
Remove bolt
B
, washer
C
, the castor fork
A
with
bearings
D
and part
E
from the threaded bolt
F
.
3.
If necessary, turn the threaded bolt
F
out of the
supporter
G
and replace with a new one. Apply
high-strength adhesive on the thread.
4.
Replace the castor fork and reinstall in reverse order.
IMPORTANT!
Risk of damaging the castor fork bearing
– Do not overtighten the bolt
B
.
– Tighten the bolt only so far that the fork can still be
turned freely.
5.
Reinstall the castor wheel.
F
= 13 Nm (high-strength)
Function check
Tip the wheelchair backwards by 90° so that it is lying on
the backrest and the rear wheels. Make sure that the clevis
pin is as horizontal as possible. Turn the fork upwards
(position A) and let it tip downwards. The fork has been
correctly adjusted if it easily turns to slightly beyond the
bottommost point (position B) and then maximally turns
back to the bottommost point (position C). If the fork turns
back over the bottommost point or even swings back and
forth, it has not been sufficiently tightened. There is a risk
that the castor wheel will start to wobble at high speeds.
A
B
C
6.7 Rear wheels
WARNING!
Risk of accidents to the wheelchair user
– Check and adjust the antitipper and parking brake settings after each change on the rear wheel position.
6.7.1 Ensuring the rear wheels are parallel
Allen key (5 mm)
■■□
1659339-A
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