1998 Buick Century Brake Service (ONLINE REPAIR MANUALS)

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We have info for following modifications of 1998 Buick Century

  • 1998 Buick Century Custom 3.1 V6 GAS, CID:189, Fuel Injection, Aspiration:189, Engine VIN:, Desg:M
  • 1998 Buick Century Limited 3.1 V6 GAS, CID:189, Fuel Injection, Aspiration:189, Engine VIN:, Desg:M

BRAKE SERVICE PROCEDURES FOR 1998 Buick Century AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 Buick Century cars and light trucks from 1990+.

Disc Brakes -> AC-Delco Single Piston Front Disc Brake (Type 2) -> Description
Vehicle: 1998 Buick Century Custom 3.1 V6 GAS

The caliper has a single piston and is mounted to the support bracket by two mounting bolts, Figs. through . The caliper assembly slides on the two mounting bolts. Upon brake application, fluid pressure against the piston forces the inboard s...

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BRAKE SERVICE PROCEDURES FOR 1998 Buick Century AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 Buick Century cars and light trucks from 1990+.

Anti-Lock Brakes -> Delphi (Delco-Moraine) Type VI -> SYSTEM SERVICE -> 1997 -> 1998 -> Achieva, Beretta, Cavalier, Corsica, Cutlass Supreme, Grand Am, Grand Prix, Lumina, Malibu, Metro, Monte Carlo, Prizm, Regal & Sunfire -> Achieva, Beretta, Corsica, Grand Am & Skylark -> Achieva, Cutlass, Cutlass Supreme, Grand Am, Grand Prix, Lumina, Malibu, Monte Carlo, Regal & Skylark, 1998 Cavalier & Sunfire -> Beretta, Corsica & 1997 Cavalier & Sunfire -> Brake System Bleed -> Camaro & Firebird -> Cavalier & Sunfire -> Component Replacement -> Cutlass & Malibu -> Cutlass Supreme, Grand Prix, Intrigue, Lumina, Monte Carlo, Regal & 1997-98 Century -> Electronic Brake Control Module -> Front -> Hydraulic Modulator Assembly -> Hydraulic Modulator Solenoid -> Hydraulic System Flush -> Less Scan Tool -> Manual Bleed -> Manual Flush -> Metro -> Pressure Bleed -> Pressure Flush -> Prizm -> Rear -> Rehome -> Scan Tool -> Wheel Speed Sensor
Vehicle: 1998 Buick Century Custom 3.1 V6 GAS

Brake System Bleed

Before bleeding the brakes, the front and rear displacement cylinder pistons must be returned to their top most position as outlined under "Rehome."

Rehome
Scan Tool

All Diagnostic Trouble Codes (DTCs) must be repaired and cleared before attempting to rehome displacement cylinder pistons. Using suitably programmed scan tool, follow tool manufacturers instructions.

Less Scan Tool

On 1997-98 models, refer to " Scan Tool."

ABS warning lamp must not be illuminated. Do not place foot on brake pedal unless specifically directed to do so.

  • Remove foot from brake pedal.
  • Start engine...

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BRAKE SERVICE PROCEDURES FOR 1998 Buick Century AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 Buick Century cars and light trucks from 1990+.

Drum Brakes -> Type 5 -> Brake Service -> Installation -> Removal
Vehicle: 1998 Buick Century Custom 3.1 V6 GAS

Removal
  • Raise and support vehicle.
  • Mark relationship of wheel to axle, then remove wheel and tire assembly.
  • Remove brake drum. If drum is difficult to remove, proceed as follows:
    • Ensure parking brake is released.
    • Back off parking brake cable adjustment.
    • Remove access hole plug from backing plate, insert screwdriver through hole and push parking brake lever off its stop.
    • Insert punch through hole in splash shield Fig. , tap on punch to loosen drum. Then remove drum.
  • Remove actuator spring using brake tool J 38400, or equivalent to pry loop end of spring from adjuster actuator, Fig. . ...

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BRAKE SERVICE PROCEDURES FOR 1998 Buick Century AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 Buick Century cars and light trucks from 1990+.

Power Brake Units -> Description -> AC-Delco Single Diaphragm Type -> AC-Delco Tandem Diaphragm Type -> Toyota/GM Single Diaphragm Type
Vehicle: 1998 Buick Century Custom 3.1 V6 GAS

AC-Delco Tandem Diaphragm Type

This unit utilizes a vacuum power chamber, consisting of a front and rear shell, housing divider, front and rear diaphragm, plate assemblies, hydraulic pushrod and a diaphragm return spring, Figs. and .

In normal operating mode, with service brakes in released position, the booster operates with vacuum on both sides of its diaphragms. When brakes are applied, air at atmospheric pressure is admitted to one side of each diaphragm to provide power assist. When the service brake is released, atmospheric air is shut off from one side of each diaphragm. The a...

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BRAKE SERVICE PROCEDURES FOR 1998 Buick Century AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 Buick Century cars and light trucks from 1990+.

Hydraulic Brake Systems -> Hydraulic Brake System Specifications
Vehicle: 1998 Buick Century Custom 3.1 V6 GAS

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BRAKE SERVICE PROCEDURES FOR 1998 Buick Century AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 Buick Century cars and light trucks from 1990+.

Hydraulic Brake Systems -> Description -> Brake Distribution Valve & Switch -> Brake Warning Lamp Switches -> Combination Valve -> Components -> Diagonally Split System -> Failure Warning Switch -> Fluid Level Sensor -> Front & Rear Split System -> Metering Valve -> Proportioning Or Pressure Control Valve -> Warning Lamp
Vehicle: 1998 Buick Century Limited 3.1 V6 GAS

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, Fig. .

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 p...

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