Replacing The Caster Fork; Assembly G: Rear Wheels; Replacing The Rear Wheels - Otto Bock Discovery tmax Service Manual

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3.10.2 Replacing the Caster Fork

1) Remove the caster wheel (see previous chapter).

2) Remove the cap on the caster wheel bearing (see Fig. 48, item 1).

3) Loosen the upper hexagon nut (see Fig. 48, item 2). Counter-support the hexagon nut below the caster fork as

you do so (see Fig. 48, item 3).

4) Remove and replace the caster fork with caster wheel axle.

5) Slide the new caster fork onto the caster wheel axle. Ensure there is a spring washer between the caster fork

and caster wheel axle (see Fig. 49, item 1).

6) Tighten the hexagon nut to a torque of 23 Nm.

INFORMATION: During installation, tighten the ball bearings on the caster wheel axle so that the

hexagon nut is firmly seated, but the caster fork can still be turned easily.

CAUTION

Prohibited changes of the wheel size/installation position

Risk of injury or damage due to altered driving characteristics or breakage of load-bearing components

► Only replace wheels with wheels of the same size and use the previous installation position. Changes could

have incalculable effects on the stability of the product when driving.

Replacing the Rear Wheels with Quick-Release Axle

1) Loosen the quick-release axle (see Fig. 50) and remove and replace the wheel.

2) Slide the rear wheels onto the wheel attachments of the wheel adapters.

3) If required, adjust the length of the quick-release axle by turning the hexagonal (no illustration).

→ Ensure that the locking mechanism disappears fully in the quick-release axle after releasing the pushbutton.

If this is not the case: lengthen the quick-release axle. In order to do so, turn the hexagon nut on the quick-

release axle anti-clockwise in small increments.

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Service Work

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