DESCRIPTION - DISC BRAKES (REAR)
Rear disc brakes are optional equipment on some
models of this vehicle (Fig. 14). The rear disc brakes
are similar to the front disc brakes; however, there
are several distinctive features that require different
service procedures. The rear disc brakes consist of
the following components:
• Brake caliper - single-piston, floating type
• Brake caliper adapter
• Brake shoe and linings
• Brake rotor - drum-in-hat type
All vehicles equipped with rear disc brakes have a
small duo-servo drum brake mounted to the caliper
adapter. This is part of the parking brake system.
The drum brake shoes expand out against a braking
surface (hat section) on the inside area of the disc
brake rotor.
Vehicles are equipped with a caliper assembly that
has a 34 mm (1.43 in.) piston and uses a solid non-
vented rotor.
The caliper assembly for all applications floats on
rubber bushings using internal metal sleeves that
are attached to the adapter using threaded guide pin
bolts.
The brake caliper adapter and rotor shield are
mounted to the rear suspension knuckles of vehicle.
The adapter is used to mount the brake caliper to the
vehicle (Fig. 14). The adapter has two machined
abutments, which are used to position and align the
caliper and brake pads for movement inboard and
outboard. The adapter also mounts the parking brake
shoes and actuating cables to the vehicle.
DESCRIPTION - DISC BRAKES (REAR) - SRT-4
Rear disc brakes are standard on this vehicle (Fig.
14). The sales code for this performance brake sys-
tem is BR3. Each rear disc brake consists of the fol-
lowing components:
• Caliper - single-piston, floating type
• Caliper adapter
• Shoe and lining assemblies (Pads)
• Rotor - drum-in-hat type
BR3 rear disc brakes are similar to and operate
the same as standard PL brakes, but differ in the fol-
lowing ways. Like the standard PL with rear disc
brakes, vehicles with BR3 rear disc brakes are
equipped with a one piece caliper assembly that has
a 36 mm (1.42 in.) piston and use a solid non-vented
270 mm (10.63 in.) drum-in-hat brake rotor. But
unlike the standard PL, the BR3 rear disc brake cal-
iper is painted red. Also, the BR3 rear disc brake
rotor has a pad contact surface approximately 3 mm
thicker than the standard PL. BR3 brake rotors can
be easily identified by the recessed machined area
near the hub center (Fig. 15).
To accommodate the additional width brake rotors,
instead of using wider calipers, each rear brake shoe
metal backing plate is 1.5 mm thinner than that of
the standard PL with rear disc brakes (Fig. 16).
When replacing brake shoes, often referred to as
pads, only brake shoes meeting the original equip-
ment manufacturer (OEM) formulation (such as
Mopar
t replacement parts) should be used.
NOTE: Special care should be taken to assure that
the correct brake shoes are used only with the cor-
rect rotor.
As with the standard PL rear disc brakes, the BR3
caliper adapter is mounted to the rear suspension
spindle. The adapter is used to mount the disc brake
caliper to the vehicle (Fig. 14).
DESCRIPTION - DRUM BRAKES (REAR)
Rear drum brakes are standard equipment on this
vehicle. The rear drum brakes consist of the major
components listed in the figure (Fig. 17). Other com-
ponents related to the brake shoes themselves can be
seen in the next figure (Fig. 18).
The rear wheel drum brakes are a two-shoe, inter-
nal-expanding type with an automatic adjuster screw
(Fig. 18). The automatic adjuster screw is actuated
each time the brakes are applied and adjustment is
made when lining wear permits. The automatic
adjuster screw is located directly below the rear
brake wheel cylinder.
Fig. 14 Rear Disc Brakes
1 - DISC BRAKE CALIPER
2 - DISC BRAKE ADAPTER
3 - GUIDE PIN BOLTS
4 - HUB AND BEARING
5 - BRAKE ROTOR
6 - RETAINER CLIP
7 - DUST CAP
8 - NUT
5 - 14
BRAKES - BASE
PL/SRT-4
HYDRAULIC/MECHANICAL (Continued)