Advertisement
4. PARKING BRAKE SYSTEM
1)
STRUCTURE
9
1
Housing
2
Pressure ring
3
Thrust bolt
2)
OPERATION
The two identical brake pads and slide freely on the guide bolt, which is fastened in the housing.
The guide bolts are guided in an additional brake anchor plate which in turn is screwed onto the
vehicle, i.e. its axle.
On actuation, the brake generates a clamping force at the brake lining pads, which cause a
tangential force/braking moment to be generated at the brake disk, the extent of which depends on
the coefficients of friction generated by the linings.
The clamping force is generated by the bank of cup springs, during which the piston is moved
together with the adjusting screw, the thrust bolt and the brake pad towards the brake disk.
When the brake pad comes into contact with the brake disk, the reaction force shifts the housing
onto the guide bolts until the brake pad is also pressed against the brake disk.
The brake is released by complete pre-tensioning of the bank of cup springs. Du-ring this process,
through application of the necessary release pressure after overcoming the cup spring force, the
piston must move back until it comes to rest against the pressure ring.
The clamping force diminishes with wear of the brake lining and brake disk. The brake must be
adjusted at the latest at the times indicated by the adjusting specification followings.
8
7
3
6
4
Adjust screw
5
Bank of cup springs
6
Piston
5
4-12
1
2
4
7
Lining pad
8
Lining pad
9
Gliding bolt
100D7BS111
Advertisement
