7.10.2 Rear Castor Wheels - Invacare Tornado Service Manual

7.10.2 Rear Castor Wheels

•
Use the flat-bladed screwdriver to carefully
pry the rear plastic cover off, as shown in
the picture.
•
Prop up the wheelchair by lifting it up on the
side that you want to work on and then
placing the wooden block underneath the
battery box on that side.
•
Loosen and remove the 19 mm nut (1) that
holds the castor wheel using the socket
wrench. Hold the wheel so it does not rotate
while removing the nut.
•
Pull the steering head shaft down and out of
the steering head tube.
•
Remove the washer and the bearing race
from the top of the tube. The other bearing
race should be on the shaft.
IMPORTANT REASSEMBLY INFORMATION!
The pictures show the wide rim on the outside of the bearing race
(A) and the narrow rim on the inside (B).
The bearings must always be assembled so that the narrow rims
are facing each other (inwards)! The steering head bolt and the
nut must always press against the wide rims from the outside!
Otherwise the bearings will be forced out apart by the pressure of
the bolt!
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