Bendix Disc Brake Shoe And Lining - Chevrolet 1980 Light Duty Truck Service Manual

CALIPER
Fig. 5-31--Bendix Front Disc Brake Assembly
BENDIX DISC BRAKE SHOE AN D LINING
The brake linings should be inspected any time the
wheels are removed. Check both ends of the outboard shoe
by looking in at each end of the caliper (fig. 5-31). This is
the point at which the highest rate of wear normally occurs.
At the same time, check the lining thickness on the inboard
shoe by looking down through the inspection hole in the top
of the caliper; see "Brake Inspection" portion of this section.
The inboard shoe is installed with the ends of the shoe
resting in the steering knuckle. The large tab at the bottom
of the outboard shoe is bent over at the right angle and fits
in the cutout in the outboard section of the caliper.
INBOARD SHOE
Removal (Front or Rear)
See "Notice" on page 1 of this section.
NOTICE:
1. Remove master cylinder cover and observe brake
fuuid level in front reservoir is more than 1/3 full, siphon
the necessary amount out to bring the level to 1/3 full. This
step is taken to avoid reservoir overflow when the caliper
piston is pushed back into its bore. Discard the brake fluid
removed. Never reuse brake fluid.
2. Raise the vehicle on a hoist and remove wheels.
3. Push the piston back into its bore. This can be
accomplished by using a "C" clamp as shown in Figure
5-33.
4. Remove the bolt at the caliper support key. Using
a brass punch, remove the key and spring (fig. 5-34).
5. Lift the caliper off the disc and support in a raised
position with a heavy wire (fig. 5-35).
Do not support the weight of the caliper on
NOTICE:
the brake hose as damage to the brake hose could
result.
6. Remove the inboard shoe from the steering knuckle
or rear caliper support (fig. 5-32). Remove and discard the
inboard shoe clip. Remove the outboard shoe from the
caliper. It may be necessary to tap the shoe to loosen it in
the caliper housing.
Mark disc pad positions if pads are to be reinstalled.
Cleaning and Inspection
The shoes should be replaced when the lining is worn
to approximately 1/32" (0.80 mm) thickness over the rivet
heads. Replace shoes in axle sets.
1. Examine the inside of the caliper for evidence of
fluid leakage. If leakage is noted, the caliper should be
overhauled.
2. Wipe the inside of the caliper clean, including the
exterior of the dust boot. Check the boot for cuts, cracks
or other damage.
BRAKES 5-29
LIG H T T R U C K SERV ICE M ANUAL