1990 Oldsmobile Custom Cruiser Brake Service (ONLINE REPAIR MANUALS)

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BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile Custom Cruiser AUTOMOBILES

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

DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston w/Dual Mounting Bolts (Type 2) -> SERVICE -> BRAKE SHOE & LINING INSTALLATION -> BRAKE SHOE & LINING REMOVAL -> CALIPER ASSEMBLY -> CALIPER DISASSEMBLY -> CALIPER INSTALLATION -> CALIPER REMOVAL
Vehicle: 1990 Oldsmobile Custom Cruiser 5.0 V8 GAS

CALIPER REMOVAL

  • Remove approximately2/3 of brake fluid from master cylinder.
  • Raise and support front of vehicle, then remove wheel and tire assembly.
  • Position suitable pliers over inboard pad and housing as shown in Fig. , and squeeze pliers to compress caliper piston.
  • If caliper assembly is being removed for service, remove inlet fitting attaching bolt, copper washer, and inlet fitting from caliper housing. Plug opening in inlet fitting to prevent fluid loss and contamination. Do not crimp brake hose, as this may damage internal structure of hose. If only shoe and lining assemblies are t...

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BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile Custom Cruiser AUTOMOBILES

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

DRUM BRAKES, GENERAL MOTORS -> Types 1 & 2 -> INSPECTION
Vehicle: 1990 Oldsmobile Custom Cruiser 5.0 V8 GAS

  • Inspect components for damage and unusual wear. Replace as necessary.
  • Inspect wheel cylinders. Boots which are torn, cut or heat damaged indicate need for wheel cylinder replacement.On type 1 brakes, remove wheel cylinder links. Fluid spill from boot center hole indicates cup leakage and need for wheel cylinder replacement.On type 2 brakes, use a small screwdriver to pry center hole of boot away from piston. If fluid spills from center hole, cup lea...

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BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile Custom Cruiser AUTOMOBILES

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

DRUM BRAKES, GENERAL MOTORS -> Type 4 -> BRAKE ADJUSTMENTS -> PARKING BRAKE, ADJUSTMENT -> SERVICE BRAKE, ADJUSTMENT
Vehicle: 1990 Oldsmobile Custom Cruiser 5.0 V8 GAS

The rear drum brakes have self-adjusting shoe mechanisms that assure correct lining-to-drum clearances at all times. The automatic adjusters operate only when the service brakes are applied.

Although the brakes are self-adjusting, an initial adjustment is necessary after the brake shoes have been replaced, or when the length of the star wheel adjuster has been changed during some other service operation.

SERVICE BRAKE, ADJUSTMENT

  • Raise and support vehicle, then remove rear wheels and brake drums.
  • Check to make sure parking brake cable linkage and levers on secondary brake shoe are...

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BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile Custom Cruiser AUTOMOBILES

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

POWER BRAKE UNITS, GENERAL MOTORS -> DELCO-MORAINE SINGLE DIAPHRAGM TYPE -> Brakes Grab -> DESCRIPTION -> Hard Pedal -> OVERHAUL -> Slow Or No Release -> TROUBLESHOOTING
Vehicle: 1990 Oldsmobile Custom Cruiser 5.0 V8 GAS

DESCRIPTION

This power brake unit is a suspended type vacuum brake booster which utilizes engine intake manifold vacuum and atmospheric pressure to assist in braking,Fig. .

The unit consists of a vacuum power section and a hydraulic master cylinder section. The vacuum power section contains a power piston with rolling diaphragm mechanism and power piston return spring.

The control valve consists of an air valve and floating vacuum control valve assembly. The reaction mechanism consists of a hydraulic piston, reaction plate and a series of levers. The valve opera...

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BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile Custom Cruiser AUTOMOBILES

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

HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> COMPONENT DESCRIPTION -> BRAKE DISTRIBUTION VALVE & SWITCH -> BRAKE WARNING LAMP SWITCHES -> COMBINATION VALVE -> Failure Warning Switch -> Fluid Level Sensor -> Metering Valve -> Proportioning or Pressure Control Valve -> Testing Warning Lamp Operation
Vehicle: 1990 Oldsmobile Custom Cruiser 5.0 V8 GAS

BRAKE WARNING LAMP SWITCHES

There are four basic types of brake warning lamp switches as shown,Figs. through . When a pressure differential occurs between the front and rear brake systems, the valves will shuttle toward the side with the low pressure.

In the switch shown inFig. , movement of the differential valve forces the switch plunger upward over the tapered shoulder of the valve to close the switch contacts and light the dual brake warning lamp, signaling a brake system failure.

InFig. , the valve assembly consists of two valves in a common bore that are spring loaded ...

CLICK HERE TO GET FULL ACCESS TO 1990 Oldsmobile Custom Cruiser BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile Custom Cruiser AUTOMOBILES

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

POWER BRAKE UNITS, GENERAL MOTORS -> TOYOTA/GM SINGLE DIAPHRAGM TYPE -> ADJUSTMENTS -> Assembly -> Booster Pushrod -> Brake Pedal -> Brakes Drag -> Brakes Grab -> Disassembly -> Hard Pedal/Brakes Inefficient -> Low Or Spongy Brake Pedal -> OVERHAUL -> TROUBLESHOOTING
Vehicle: 1990 Oldsmobile Custom Cruiser 5.0 V8 GAS

ADJUSTMENTS

Brake Pedal
  • With engine running and brake pedal in rest position, measure distance between face of pedal and floor mat.
  • If distance is not 5.79-6.18 inches, adjust pedal height as follows:
    • Remove left lower instrument panel trim section and air duct.
    • Loosen stop lamp switch sufficiently to gain clearance for pedal adjustment.
    • Loosen locknut and rotate pedal pushrod as needed to obtain specified pedal height, then tighten locknut.
    • Adjust position of brake light switch so that plunger lightly contacts pedal stopper and brake lamps are off when pedal is release...

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