2001 Chevrolet Prizm Brake Service (ONLINE REPAIR MANUALS)

ABS Service

Before performing any repairs on the ABS system, note the following precautions:

• Before using electric welding equipment, disconnect EBCM.
• Carefully note routing, position and mounting ABS and TCS wiring, connectors, clips and brackets. ABS and TCS are extremely sensitive to electromagnetic interference.
• Do not use a fast charger when battery is connected. Never disconnect battery from system with engine running.
• Ignition switch must be in Off position when disconnecting EBCM.
• Many ABS system components ...

Two basic types of power assist mechanisms are used: vacuum assist diaphragm assemblies, which use engine vacuum or, in some cases vacuum pressure developed by an external vacuum pump. The second type is a hydraulic pressure assist mechanism, which use pressure developed by an external pump (usually the power steering pump). Both systems act to increase the force exerted on the master cylinder piston by the operator. This in turn increases the hydraulic pressure delivered to the wheel cylinders while decreasing driver effort required to obtain acceptable stopping performance.

Vac...

The caliper is a single bore design and is mounted to a carrier assembly. Hydraulic pressure, created by applying the brake pedal, is converted by the caliper to a stopping force. This force acts equally against the piston a...

Removal

• Siphon ^2/3 of brake fluid from master cylinder.
• Raise and support vehicle, then remove wheels.
• Install two wheel lug nuts to retain rotor, then remove caliper mounting bolts, Fig. .
• Remove union nut securing brake hose to caliper and drain fluid into a suitable container. If caliper is only being removed for brake pad replacement, do not disconnect brake hose.
• Compress piston as needed, then remove caliper. If brake hose remains connected, secure caliper aside to prevent hose from being stretched.

Disassemble

• Remove two caliper slide bushings, four dust boots and spacer collars...

Front & Rear Split System

When the brake pedal is depressed, both the primary (front brake) and the secondary (rear brake) master cylinder pistons are moved simultaneously to exert hydraulic fluid pressure on their respective systems.

If the rear (secondary) brake system fails, initial brake pedal movement will cause the unrestricted secondary piston to bottom in the master cylinder bore. Primary piston movement will displace hydraulic fluid in the primary section of the master cylinder to actuate the front brake system.

If the front (primary) brake system fails, initial brake pedal mo...

When working on or around brake assemblies, care must be taken to prevent breathing asbestos dust, as many manufacturers incorporate asbestos fibers in the production of brake linings. During routine service operations the amount of asbestos dust from brake lining wear is at a low level due to a chemical breakdown during use, and a few precautions will minimize exposure.

• Do not sand or grind brake linings unless suitable local exhaust ventilation equipment is used to prevent excessive asbestos exposure.
• Wear a suitable respirator approved for asbestos dust use during all repair proced...