2.6
ASSEMBLY GROUP BRAKES
2.6.1 Drum brake
The brake force of the drum brakes is set ideally by our tech-
nicians.
ATTENTION
For safety reasons it is recommended to check the func-
tionality regularly since a readjustment of the brake force
or even a replacement of the Bowden cables becomes
necessary from permanent use.
(1+2) The following parts of the drum brake are of impor-
tance in order to adjust the brake force.
•
setscrew (A)
•
lock nut (B)
•
push-on nipple (C)
•
holder (D)
•
inner cable (E)
•
locking lever (F)
•
clamp (G)
•
brake shoe (H)
To install the Bowden cable:
(3) place the push-on nipple (C) with the setscrew
•
(A) and the lock nut (B) at the bottom end in the
holder (D),
•
guide the inner cable (E) through the clamp (G),
•
place the clamp (G) in the locking lever (F) and
•
push the locking lever (F) slightly forward toward
push-on nipple (C), so that a slight pull between
clamp and push-on nipple occurs.
•
Tighten the clamp (G).
•
Put the wheel back on and check if the brake
shoes (H) already grind against the brake pad.
•
For this, jack up the wheelchair or tilt it to the side.
The wheel must be able to turn unhindered.
•
Should the brake shoes grind (without using the
control lever), loosen the clamp (G) and
•
give the locking lever (F) more room.
•
After, retighten the clamp (G).
To set the brake force:
•
loosen the lock nut (B) on the drum brake pad,
•
tighten or loosen the inner cable (E) of the Bowden
cable and turn the setscrew (A),
•
test the traction on the control lever and
•
retighten the lock nut (B).
�
INDICATION
Possible impairments of the brake force can occur from:
•
wrongfully adjusted traction of the Bowden ca-
bles,
•
defected Bowden cable,
•
dirty brake pads/brake shoes.
(1)
(E)
(C)
(2)
(H)
(F)
(G)
(E)
(3)
(H)
(F)
(G)
(E)
service record
(D)
(B)
(A)
(C)
(B)
(D)
(A)
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