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4B-2 FRONT BRAKE
CALIPER
This caliper has a single bore and is mounted to the
steering knuckle with two mounting bolts. Hydraulic
pressure, created by applying the brake pedal, is
converted by the caliper to a stopping force. This force
acts equally against the piston and the bottom of the
caliper bore to move the piston outward and to slide
the caliper inward, resulting in a clamping action on
the rotor. This clamping action forces the linings against
the rotor, creating friction to stop the vehicle.
CLEARANCE CALIBRATION
When the hydraulic pressure is applied to the piston,
the piston moves leftward. The piston seal, which extent
considerable pressure against the piston, moves with
cylinder.
Application
Caliper Cylinder I.D.
Pad Thickness
Disc Thickness
DESCRIPTION AND OPERATION
YAD4B010
SPECIFICATIONS
Ventilated Disc Type
However, as a part of the piston seal is fixed into a
grove in the cylinder shape of the seal is as shown in
below figure, distorted toward the piston moving
direction.
When the pressure is taken off from the brake pedal
and the hydraulic pressure is released from the piston,
a restoring elastic force is generated at the seal and
pushes the piston rightward and back it in original
position.
As the pads wear away and the clearance between
rotor and pads become larger, the piston moves larger.
The seal then could change in shape further, but since
end of the seal is fixed into the groove in the cylinder,
the distortion is limited to the same amount as
previously described.
The piston moves further to cover the distance of
clearance. As the piston returns by the same distance
and the rubber seal recovers its original shape, the
clearance between the rotor and pads are maintained
in original condition.
MANDO
Ø 60 mm
10 mm
24 mm
YAD4B020
Delphi Korea
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SSANGYONG Y200
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