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46
Brakes/Mechanical
928
3. Clean bearing and guiding surfacesof
brake pads in
brake calipers with gasoline or a cylindrical
brush.
Never use solutions containing
mineral oil or
sharp edged metal tools.
4. Check 20" piston position and if necessary adjust
with piston turning pliers.
Hold piston gauge at bottom guide surface on
front brake caliper.
Hold piston gauge at top guide surface on rear
brake caliper.
5. Insert outer brake pad and press floating caliper
frame in direction
of brake disc so far. that pin
engages in groove of pad backplate.
Note
To prevent seizure of brake pads in brake calipers
due to corrosion, apply a thin coat of grease on
bearing and guiding surfaces.
Use Optimoly
HT (copper paste) or Plastilube.
6. Insert inner brake pad.
7. Install cross spring, retaining pins and spring
lock or lock wire with wire guide plate.
8. Press warning contact into pad in correct
9.
position.
Depress brake pedal of stationary
car hard
reveral times to move brake pads to their
normal operating position.
Now check level of
brake fluid in tank, adding more if necessary.
Bedding-In
Brake
Pads
Brand-new brake pads have a once only loss of
braking effect (thermal fading), which disappears
after a breaking-in
time of about 200 km (125 mi.).
During this period full stops from top speeds
should be limited to emergency situations.
New
pads must be bedded in by applying
medium
forces to brake pedal and at larger intervals. Brake
pads will first provide maximum
braking effect
after being bedded in.
46.4
Removing and Installing Brake Pads
(Floating
Frame Caliper Disc Brakes)
Printed in Germany
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