Description - Disc Brakes (Rear); Description - Drum Brakes (Rear) - Chrysler PT Cruiser Service & Repair Manual

PT
HYDRAULIC/MECHANICAL (Continued)

DESCRIPTION - DISC BRAKES (REAR)

Rear disc brakes are optional equipment on some
models of this vehicle (Fig. 13). The rear disc brakes
are similar to the front disc brakes; however, there
are several distinctive features that require different
service procedures. Each rear disc brake consists of
the following components:
• Caliper - single-piston, floating type
• Caliper adapter
• Shoe and lining assemblies
• Rotor - drum-in-hat type
Fig. 13 Rear Disc Brakes
1 - DISC BRAKE ADAPTER
2 - GUIDE PIN BOLTS
3 - HUB AND BEARING
4 - BRAKE ROTOR
5 - RETAINER CLIP
6 - DUST CAP
7 - NUT
8 - DISC BRAKE CALIPER
Vehicles are equipped with a one piece caliper
assembly that has a 36 mm (1.42 in.) piston and uses
a solid non-vented 270 mm (10.63 in.) brake 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 is mounted to the rear
suspension spindle. The adapter is used to mount the
disc brake caliper to the vehicle (Fig. 13). The
adapter has two machined abutments which are used
to position and align the caliper and brake shoes for
movement inboard and outboard.
When brake shoes, sometimes referred to as pads,
are replaced, only brake shoes meeting the original
equipment manufacturer (OEM) formulation (such as
Mopar replacement parts) should be used.
The adapter also mounts the parking brake shoes
and actuating cables to the vehicle. 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. (Refer to 5
- BRAKES/PARKING BRAKE - DESCRIPTION)
This vehicle has an optional performance brake
system. The sales code for this system is BR4.
Although similar in appearance to the BRT (Disc/
Disc combination), this system features heavy duty
wheel brake components. BR4 rear disc brakes uti-
lize brake rotors that have a pad contact surface
approximately 3 mm thicker. To accommodate that
additional width, instead of using wider calipers as
the front brakes do, each rear brake shoe metal back-
ing plate is 1.5 mm thinner than that of the standard
BRT rear disc brakes (Fig. 14). BR4 brake rotors can
be easily identified by the recessed machined area
near the hub center (Fig. 15).
Fig. 14 Standard And BR4 Brake Shoes
1 - BRAKE CALIPER WITH BRT SHOES
2 - BRAKE CALIPER WITH BR4 SHOES
3 - 4.5 MM
4 - 6.0 MM
NOTE: Special care should be taken to assure that
the correct brake shoes are used only with the cor-
rect rotor.

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. 16). Other com-
ponents related to the brake shoes themselves can be
seen in the next figure (Fig. 17).
BRAKES - BASE 5 - 13