Adjusting The Brakes; Adjusting The Wheel Locks - Otto Bock Ventus Instructions For Use Manual

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5) Install the castor wheel.

6) Slide on the 2nd spacer bush (not pictured).

7) Insert the screw in the threaded axle and tighten to 8 Nm.

→ Once changed, the left and right castor wheels must both have the same vertical position in the castor wheel

fork.

→ Once the anterior seat height has been adjusted, the rear wheel tracking (see Page 14) and the castor journal

angle (see Page 17) must be checked and, if necessary, readjusted.

6.4 Adjusting the Brakes

CAUTION

Insufficient braking action of the knee lever wheel lock

Risk of accidents, falling

► Check the air pressure of the rear wheels and the correct setting of the knee lever wheel lock. The correct

tyre pressure is printed on the casing. For rear wheels, the minimum air pressure is 7 bar.

► Use only original rear wheels with an approved radial excursion of 1 mm maximum.

Adjusting the Knee Lever Wheel Locks/Scissor Wheel Locks

INFORMATION

If the rear wheel position is changed (adjusting sliders on the frame) or a different rear wheel size is installed, the

481H25=PK025 knee lever wheel lock must be installed with a seat depth < 340 mm (depending on the horizontal

rear wheel position and rear seat height). For more information, see the 647G829 service manual.

This adjustment must be made after the rear wheel has been repositioned or during fine adjustment.

The following brake types are adjusted in the same way: "Standard" knee lever wheel lock, "Upgrade" knee lever

wheel lock, scissor wheel lock.

1) Loosen the Allen head screws in the clamp bracket on the underside of the frame (see fig. 32, item 1).

2) Adjust/move the support for the knee lever wheel lock (see fig. 32, item 2) to any position in the clamp bracket

(see fig. 32, item 3).

When the wheel lock is disengaged, the gap between the tyre and wheel lock bolt must not exceed 5 mm (see

fig. 33).

INFORMATION: For special requirements when adjusting the scissor wheel lock, see the section

"Special requirements when adjusting the scissor wheel lock".

3) Tighten the Allen head screws to 10 Nm.

→ After adjustment the left and right knee lever wheel locks must both have the same braking force.

Ventus

Adjustments

Ottobock | 19

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