Adjusting The Suspensions - Otto Bock 490E75 Series Service Manual

4.12.2

Adjusting the suspensions

INFORMATION
For fine-tuning according to the overall weight of the wheelchair, the spring tension can be increased or decreased
slightly. Always adjust the left and right suspension equally and in pairs.
INFORMATION
The suspensions have to be removed in order to adjust them.
For replacing the suspension on a front or rear-wheel drive (FWD/RWD), see Page 46/Page 63.
For replacing the suspension on a mid-wheel drive (MWD), see Page 67/Page 68.
Prerequisites:
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).
Adjusting the springs (RWD/FWD see Fig. 147/148, MWD see Fig. 149/150)
1) Remove the suspension.
2) Turn the adjustment element (see item 1) to the left (counter-clockwise) until the spring tension is fully released.
3) Turn the adjustment element to the right (clockwise) until it is up against the spring.
4) Turn the adjustment element further to the right until the spring pre-tension is max. 1 – 1.5 mm.
INFORMATION: This pre-tension corresponds to approx. 1 – 1.5 turns of the adjustment element. The
spring must be free of play and is not permitted to rattle.
5) Install the suspension.
147
149
490E75=0_C
148
150
Service work
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