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We have info for following modifications of 1991 Buick Park Avenue
- 1991 Buick Park Avenue 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:L
- 1991 Buick Park Avenue Ultra 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:L
- 1991 Buick Park Avenue Ultra 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:1
BRAKE SERVICE PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Park Avenue cars and light trucks from 1990+.
DRUM BRAKES, GENERAL MOTORS -> Type 5 -> BRAKE ADJUSTMENTS -> PARKING BRAKE, ADJUSTMENT -> SERVICE BRAKE, ADJUSTMENT
Vehicle: 1991 Buick Park Avenue 3.8 V6 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 brakes are applied as the vehicle is moving rearward.
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 o...
CLICK HERE TO GET FULL ACCESS TO 1991 Buick Park Avenue BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Park Avenue cars and light trucks from 1990+.
DRUM BRAKES, GENERAL MOTORS -> General Information -> SERVICE PRECAUTIONS
Vehicle: 1991 Buick Park Avenue Ultra 3.8 V6 GAS
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 repai...
CLICK HERE TO GET FULL ACCESS TO 1991 Buick Park Avenue BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Park Avenue cars and light trucks from 1990+.
DRUM BRAKES, GENERAL MOTORS -> Type 5 -> INSPECTION
Vehicle: 1991 Buick Park Avenue Ultra 3.8 V6 GAS
- If any parts are of doubtful strength or quality due to heat discoloration, or are worn, replace them.
- Inspect wheel cylinder dust boots for signs of excessive wear or damage.
- Inspect adjusting screw for smooth operation over full length.
- Clean adjusting screw components in denatured alcohol.Ensure spring clip is installed in correct position, Fig. .
- Apply suitable lubricant to adjuster screw threads, inside diameter of socket and socket face. Adequate lubrication is achieve...
CLICK HERE TO GET FULL ACCESS TO 1991 Buick Park Avenue BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Park Avenue 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: 1991 Buick Park Avenue 3.8 V6 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...
CLICK HERE TO GET FULL ACCESS TO 1991 Buick Park Avenue BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Park Avenue cars and light trucks from 1990+.
HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> WHEEL CYLINDER OVERHAUL
Vehicle: 1991 Buick Park Avenue 3.8 V6 GAS
- Raise and support vehicle.
- Remove wheel, drum and brake shoes.
- Disconnect hydraulic line at wheel cylinder.Do not pull metal line away from cylinder, as this may kink or bend line. Line will separate from cylinder when cylinder is moved away from brake backing plate.
- Remove wheel cylinder-to-brake plate attaching screws, then the wheel cylinder.
- Remove boots, pistons, springs and cups from cylinder,Fig. .
- Clean all parts with brake fluid.
- Inspect cylinder bore. A scored bore may be honed as long as the diameter is not increased by m...
CLICK HERE TO GET FULL ACCESS TO 1991 Buick Park Avenue BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Park Avenue cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> BRAKE SHOES, LININGS & CALIPERS
Vehicle: 1991 Buick Park Avenue Ultra 3.8 V6 GAS
Remove wheels and inspect brake disc, caliper and linings. The wheel bearings should be inspected at this time and repacked if necessary. Do not get any grease on the linings.
Do not replace individual pads or replace pads on one wheel of an axle set alone, as braking performance will be adversely affected.
If a visual inspection does not ade...
CLICK HERE TO GET FULL ACCESS TO 1991 Buick Park Avenue BRAKE SERVICE PROCEDURES
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