Drive Unit; Replacing The Drive Wheels; Replacement Tasks On The Drive Unit (Rear-Wheel Drive Rwd/Front-Wheel Drive Fwd) - Otto Bock 490E75 Series Service Manual

4.9

Drive unit

4.9.1

Replacing the drive 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: Allen wrench size 6; torque wrench with Allen insert size 6
Removing the drive wheel
1) Loosen and remove the 5 screws on the drive wheel (see Fig. 82, item 1).
2)
3) If necessary: Change the tyre (see Page 70).
Installing the drive wheel
1)
2)
item 1).
82
4.9.2

Replacement tasks on the drive unit (rear-wheel drive RWD/front-wheel drive FWD)

4.9.2.1 Replacing the drive wheel splash guard
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: Allen wrench size 6; torque wrench with Allen insert size 6
Removing the drive wheel splash guard
1) Remove the drive wheel (see Page 45).
2) Loosen and remove the 2 upper screws on the drive motor (see Fig. 83, item 1).
3) Remove the drive wheel splash guard (see Fig. 83, item 2).
4) Optional: Remove the control panel for the caster wheel swivel lock from the splash guard (see Fig. 83, item 3;
see Page 61).
490E75=0_C
25 Nm in a crosswise sequence (see Fig. 82,
Service work
Ottobock | 45