Caster Fork; Removing Springs, Changing The Spring Tension; Removing The Drive Axle Spring - Otto Bock C2000 Service Instructions Manual

figure 21 Removing the steering caster splash guard

6.8.7 Caster fork

CAUTION
Risk of accidents and injury due to improper completion of work on the steering system. In order
to avoid damage or incorrect settings on the chain steering system, the removal and installation of the
caster forks may only be completed at the plant of Otto Bock Manufacturing Königsee GmbH.
6.9 Removing Springs, Changing the Spring Tension
NOTICE
Risk of damage due to improper preparation of maintenance tasks. Use suitable objects such as
wooden blocks to secure the power wheelchair against sliding or tipping. The drive wheels must ro-
tate freely.

6.9.1 Removing the Drive Axle Spring

The springs on the drive axles are mounted at two points and connect the drive unit sustainer
to the drive motor mounts.
Preparation:
❒ Remove the drive wheel (see Section 6.8.2).
❒ Remove the splash guard (see Section 6.8.6).
Tools:
❒ 2 x Allen wrench, size 5
Steps:
1. Loosen both Allen head screws that attach the spring to the drive axle.
2. Remove the drive axle spring and replace if required.
Properly reassemble all components upon completion of the work.
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