Replacing Steering Head Bearings On Steering Wheels; Installing Ball Bearings; Seating; Moving Seat Into Service Position / Removing - Invacare Fox Service Manual

Invacare® Fox
Installing Anti-Tipper Wheel
1. Install parts in reverse order.
2. Tighten nut B just tight enough that wheel can still
rotate freely.

8.9.9 Replacing Steering Head Bearings on Steering Wheels

CAUTION!
Incorrect installation can damage bearings and
cause steering wheels to fall out.
The single-row angular ball bearing rings are not
identical on both sides. There is only one correct
way to insert them.
– Follow instructions precisely.
• When removing, take care of small parts such as
screws and washers. Put all small parts down so
that they can be installed in correct sequence.
• Remove legrests and other parts that are in the
way.
• Use proper lifting techniques so that swinging
axle is hanging free or remove swinging axle, see
8.5.2 Replacing / Reversing Swinging Axle, page
18, and place swinging axle in a bench vice.
• Phillips screwdriver, size 2
• 19 mm wrench
• Torque wrench
• Wooden block (approx. 12 x 12 x 30 cm)
Removing Steering Head Bearings
1. If installed, unlock caster locks C on swinging axle A.
2. Remove front fork. See 8.9.6 Replacing Front Fork, page
24.
3. Loosen and remove screws F, locking plate E and
sprung thrust pieces D.
4. Remove caster lock C.
5. Remove all steering head bearings B.
26
Fig. 8-12
Installing Steering Head Bearings
• Insert new steering head bearing precisely. See
8.9.10 Installing Ball Bearings, page 26.
• Left-hand and right-hand caster locks C are
different. Make sure to use correct caster lock.
• Make sure that sprung thrust pieces D are
seated precisely in securing seat when installing.
• Tighten screws F with a medium-strength
thread locking adhesive.
1. Install parts in reverse order.
2. If removed, install swinging axle. See 8.5.2 Replacing /
Reversing Swinging Axle, page 18.
3. Install front fork. See 8.9.6 Replacing Front Fork, page
24.
4. Tighten nut to 25 Nm ± 2 Nm.
5. Then loosen them slightly.
6. Then re-tighten to 15 Nm ± 1.5 Nm.
7. Test all functions.

8.9.10 Installing Ball Bearings

CAUTION!
Incorrect installation can damage bearings and
cause steering wheels to fall out
The single-row angular ball bearing rings are not
identical on both sides. There is only one correct
way to insert them.
– The bearings must always be assembled so that
narrow borders of the ball bearings are facing
each other (inside).
– The steering head bolts and nuts must always
be pressing against wide (outside) border of
ball bearings! Otherwise, the bearings will be
pressed apart and damaged by the bolts.
The illustrations show the wide border of the ball bearing
on outside of ball race A and the narrow ball bearing edge
on the inside B.
After installation wheels should rotate freely but bearings
should have no play.

8.10 Seating

This manual refers to configurations with standard seat
system.
For other seat systems (for example Modulite), refer to the
corresponding manual.
8.10.1 Moving Seat Into Service Position / Removing Seat
It is necessary to move seat into service position or to
remove it for maintenance purposes or if batteries have to
be removed.
• Secure mobility device against rolling away by pressing
manual wheel lock down.
• Remove legrests.
1577880-C