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7.4 Reset mechanism
The disc brake features a reset mechanism at the front for replacing the brake pads and brake disc.
The return spring gear wheel (13) is mechanically connected to the external gearing of the threaded tube (14) so
that the thrust tappets (6) can return to their initial position. Only minimal torque is required to move the thrust
tappets (6) back to this position or preset the play.
7.5 Brake cylinder
Air pressure builds up behind the diaphragm due to the action of compressed air on the brake cylinder.
Air pressure forces the thrust rod out of the cylinder via the diaphragm plate.
The brakes may only be fi tted with brake cylinders which, apart from the sealing of the fl ange surface, are fi tted
with a so-called „inner sealing".
This means that the pushrod acting on the lever (1) must be hermetically sealed from the secondary chamber of
the brake cylinder as otherwise the clamping mechanism is completely open to its surroundings.
9
11 / 11a
14
10
5
(362)
(390)
(380)
6
7a
8
(390)
7b
1
2
3
4
5
6
7a
7b
8
9
10
11
11a
12
13
14
Brake lever
Intermediate plate
Needle bearing
Pressure plate
Traverse
Thrust tappets
Inner brake pad
Outer brake pad
Brake disc
Pressure spring
Adjustment device
Adjuster pin with
Movement thread
Indented ball coupling
Return spring gear
wheel
Threaded tube
Fig. 2
7-2
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