Chevrolet 1980 Light Duty Truck Service Manual page 384

5-30 BRAKES
Fig. 5-34~R em oving the C a lip e r S upport Key
N O TICE: Do not use compressed air to clean the
inside of the caliper since this may cause the dust boot
to become unseated.
3. Use a wire brush to remove any rust or corrosion
from the machined surfaces of the steering knuckle (or
support) and caliper. It is important to clean those areas of
the caliper and support that are in contact during the sliding
action of the caliper.
Installation
If original disc pads are being reinstalled, they must be
installed in original positions (as marked at removal).
SUPPORT
KEY
BRASS ROD
support) sliding surfaces and the support spring with Delco
Silicone Lube (or equivalent).
knuckle or rear support. Be sure the tabs are positioned
correctly and the loop-type spring positioned away from the
rotor. Install the lower end of the inboard shoe into the
groove provided in the steering knuckle or support (against
the spring clip). Slide the upper end of the shoe into position.
Be sure the clip remains in position.
ears at the top of the shoe over the caliper ears and the tab
at the bottom of the shoe engaged in the caliper cutout. If
assembly is difficult, a
not to mar the lining.
the bottom edge of the outboard lining on the outer edge
of the brake disc to make sure there is no clearance between
the tab at the bottom of the outboard shoe and the caliper
abutment. The outboard shoe should fit tightly in the caliper
and should not rattle.
upper caliper groove onto the mating surface of the steering
knuckel or caliper support. Position the caliper to the lower
steering knuckle (or support) sliding surface.
the assembly between the steering knuckle (or rear support)
and lower caliper groove. Tap into place (until the key
retaining screw can be installed) using a brass punch and
a light hammer (fig. 5-36).
N*m). The bolt boss must fit fully into the circular cutout
in the key.
1. Lubricate the caliper and steering knuckle (or
2. Install a NEW inboard shoe clip in the steering
3. Postion the outboard shoe in the caliper with the
clamp may be used. Be careful
"C"
4. With both shoes installed, lift up the caliper and rest
5. Position the caliper over the brake disc, guiding the
Make sure that the brake hose is not twisted
N O TICE:
or kinked since damage to the brake hose could result.
6. Place the spring over the caliper support key, install
7. Install the screw and torque to 12 to 18 lb. ft. (18-24
See "Notice" on Page 1 of this section.
N O TICE:
8. Reinstall the front wheel and tire assembly.
LIG H T T R U C K S ER V IC E M AN UAL