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Settings and assembly instructions
7.4 Adjusting the caster wheels
With this wheelchair type, the caster wheel position and caster wheel journal angle cannot be adjusted.
7.4.1 Replacing the caster wheels
The caster wheels can be replaced in case of wear.
1) Loosen the caster wheel axle screw connection (see fig. 9, item 1).
2) Remove the caster wheel axle/spacers (see fig. 9, item 2).
3) Remove and replace the caster wheels.
4) Install the caster wheels together with the spacers. Tighten the caster wheel axle screw connection to 8 Nm.
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7.5 Adjusting the wheel locks
WARNING
Failure to verify brake functionality
Accident, user falls due to incorrect adjustment and improperly inflated tyres
► Check the correct spacing between the wheel lock bolt and tyre (see the following section for details).
► Check the correct position of the wheel lock bolt relative to the tyre. During braking, the wheel lock bolt has to
cover at least half the tyre width.
► Always carry out adjustments to the wheel lock on both sides.
► Ensure that the user can operate the wheel lock without great effort. The force required to do so must not
exceed 60 N.
► Check the tyre pressure of the drive wheels. Note the information in the section "Technical data" or on the tyre
sidewall.
► Only use original drive wheels with a verified maximum radial out-of-round of 1 mm.
Adjustment is required if the braking force decreases.
Special Requirements for Adjustments (All Types of Wheel Locks)
Depending on the adjustment, it may be necessary to rotate or replace the support for the wheel lock. This makes
further wheel lock adjustments possible.
7.5.1 Adjusting the knee lever wheel locks
1) Loosen the Allen head screws in the clamp brackets (Invader: see fig. 10, item 1; Invader Heavy Duty: see
fig. 12, item 1).
2) Adjust/move the support for the knee lever wheel lock to any position in the clamp bracket (Invader: see fig. 10,
item 2; Invader Heavy Duty: see fig. 12, item 2).
If necessary: Slide and twist the clamp bracket on the seat tube.
3) When the wheel lock is disengaged, the gap between the tyre and wheel lock bolt must not exceed 5 mm (see
fig. 11/see fig. 13).
4) Tighten the Allen head screws to 15 Nm.
→ After adjustment, the left and right knee lever wheel locks must both have the same braking force.
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Invader 480S26=10000_K
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