Caster Wheels; Replacing The Cover Cap Set; Replacing The Caster Wheels - Otto Bock 490E75 Series Service Manual

4.10

Caster wheels

4.10.1

Replacing the cover cap set

The cover cap set on both caster wheels consists of 3 cover caps each (see Fig. 117).
Tools: Small slotted screwdriver
Removing the cover caps
1) Carefully guide the slotted screwdriver under the edge of the cover cap (see Fig. 118).
2) Use a slight levering motion to carefully pry out and remove the cover cap.
Attaching the cover caps
1) Clean and check the cover cap and the cover cap retainer for damage.
2) Push the cover cap gently into the retainer and check to ensure it is securely in place.
117
4.10.2

Replacing the caster wheels

INFORMATION
When replacing the wheels, check the tyres on both sides for even and sufficient tread. Replace the tyres if ne-
cessary.
Prerequisites:
Optional: Move the seat to the lowest seat height (see Page 15).
Switch off the control unit and deactivate the main fuse (see Page 15).
If necessary: Remove the legrests.
Jack up the wheelchair (see Page 14).
Tools: Small slotted screwdriver size; Allen wrench size 8; torque wrench with Allen insert size 8; socket wrench
size 19
Removing the caster wheel
1) Pry out and remove the 2 cover caps on the ends of the caster wheel axle (see Fig. 118; see Page 57).
2) Loosen and remove the screw on the caster wheel with its nut and 2 washers (see Fig. 119/120).
3) Remove the caster wheel with 1 washer.
4) If necessary: Change the tyre (see Page 70).
Installing the caster wheel
1) Position the caster wheel with 1 washer on the caster fork.
2)
3) Close the ends of the caster wheel axle with the 2 cover caps (see Page 57).
490E75=0_C
118
Service work
Ottobock | 57