Repairing Tire Punctures; Brakes; Replacing Hand Brakes - Invacare Comet Series Service Manual

Comet
Adjusting
Presetting of shock absorber is middle setting B. This
setting relates to user weight of 100 kg up to 120 kg.
Turning stud A clockwise makes spring softer, turning
counter-clockwise harder.
1. Place shock absorber in vise.
2. Preload spring with hook wrench.
When preloading, for most users setting the stud
A to a middle setting B is convenient.
Installing
1. Install parts in reverse order.

4.8.7 Repairing tire punctures

Removing wheel
• 17 mm wrench
• Rubber hammer
1. Raise mobility device and place wooden blocks
underneath to support it.
2. Remove wheel locknut (1).
3. Remove wheel by tapping it gently with rubber hammer
on the rear face to carefully loosen it from the axle.
When reinstalling, tighten locknut to 30 Nm.
Problems when removing wheel?
– It may be necessary to use a special tool. Ask
your Invacare provider to help you.
Repairing flat tire
• Inner tube repair set or a new inner tube
• Talcum powder
• 12 mm wrench
26
Fig. 4-11
1. Remove valve cap.
2. Deflate tire by pressing in the center valve pin.
CAUTION!
Risk of explosion
The wheel explodes if the air pressure has
not been released from the wheel before the
wheel rim is removed.
– Always let all the air out of the tire before
removing the rim.
3. Loosen and remove 4 screws (1).
4. Remove both wheel rim halves out of tire and remove
inner tube.
5. Repair inner tube and refit in wheel, or replace it with
new inner tube.
If the old inner tube has been repaired and is to be
used again, and became wet during repair, it is easier
to replace it if it is lightly dusted with talcum powder
beforehand.
6. Refit wheel rim parts from outside into tire.
7. Pump up tire lightly.
8. Reinsert nuts and bolts which hold the wheel rim
together and tighten fully.
9. Make sure that tire is properly located on wheel rim.
10. Inflate tire up to recommended tire pressure.
11. Check to make sure that tire is still located properly on
wheel rim.
12. Screw valve cap back on.
13. Locate wheel on drive shaft again.
14. Apply handbrake and hold it there to center brake.
15. Tighten wheel locknut with handbrake applied.
CAUTION!
Risk of injury from wheels coming loose
If wheels are insufficiently secured during
mounting, they can come loose when driving.
– When mounting wheels, tighten bolts with
30 Nm.
– Never use normal nuts instead of
self-locking nuts.
– Always use new bolts with an undamaged
coating.

4.9 Brakes

4.9.1 Replacing hand brakes

CAUTION!
Risk of accident
Accidental rolling can lead to accidents.
– Secure the scooter against rolling away.
1603798-B