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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Buick Regal car and truck
repair procedures including Buick engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your 1991 Buick Regal automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1991 Buick Regal
- 1991 Buick Regal Limited 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:L
- 1991 Buick Regal Limited 3.1 V6 GAS, CID:189, Fuel Injection, Aspiration:189, Engine VIN:, Desg:T
- 1991 Buick Regal Custom 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:L
- 1991 Buick Regal Custom 3.1 V6 GAS, CID:189, Fuel Injection, Aspiration:189, Engine VIN:, Desg:T
BRAKE SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Regal cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Dual Piston w/Dual Mounting Bolts -> SERVICE -> BRAKE SHOE & LINING INSTALLATION -> BRAKE SHOE & LINING REMOVAL -> Bushing & Boot Replacement -> CALIPER ASSEMBLY -> CALIPER DISASSEMBLY -> CALIPER INSTALLATION -> CALIPER REMOVAL -> Installation -> MOUNTING BRACKET SERVICE -> Removal
Vehicle: 1991 Buick Regal Custom 3.1 V6 GAS
CALIPER REMOVAL
- Siphon enough brake fluid out of the master cylinder to bring fluid level to1/3 full to avoid fluid overflow when the caliper pistons are pushed back into bores.
- Raise vehicle and remove front wheels.
- Mark relationship between wheel to hub and bearing assembly. Remove tire and wheel assembly.
- Using a suitable C-clamp and block of wood, push pistons back together into caliper bores.
- If caliper assembly is to be serviced, remove inlet fitting attaching bolt, copper washer, and inlet fitting from caliper housing. Plug opening in inlet fitting to prevent fluid loss and contaminat...
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BRAKE SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Regal 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 Regal Custom 3.1 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...
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BRAKE SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Regal cars and light trucks from 1990+.
HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> MASTER CYLINDER SERVICE -> Assembly -> CAST IRON TYPE -> COMPOSITE TYPE -> CORVETTE -> Disassembly -> EXCEPT CORVETTE -> Inspection
Vehicle: 1991 Buick Regal Limited 3.1 V6 GAS
COMPOSITE TYPE
Refer toFigs. and when performing the following procedures.
EXCEPT CORVETTE
Disassembly
- Remove master cylinder from vehicle as follows:
- Disconnect and plug hydraulic lines.
- Remove two master cylinder attaching nuts, then the master cylinder.
- Remove reservoir cover and diaphragm. Discard old brake fluid in reservoir.
- Inspect cover and diaphragm. Replace if cut, cracked or deformed.
- Remove fluid level switch, if equipped.
- On models with compact master cylinder, remove proportioner valve assembly,Fig. .
- Depress primary piston and remove lock ring.
- Plug primary fluid ou...
CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Regal cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston Rear Disc Brake -> SERVICE -> BRAKE SHOE & LINING REPLACEMENT -> CALIPER ASSEMBLY -> CALIPER DISASSEMBLY -> CALIPER REMOVAL
Vehicle: 1991 Buick Regal Custom 3.1 V6 GAS
CALIPER REMOVAL
Do not mix power steering fluid with brake fluid. If brake seals contact steering fluid or steering seals contact brake fluid, damage will result.
- Remove two thirds of the total brake fluid capacity from the master cylinder front reservoir, to prevent overflow of brake fluid.
- Support vehicle on a hoist and remove tire and wheel assembly.
- Install one nut with flat side facing rotor to prevent rotor from falling out when caliper is removed.
- Loosen parking brake cable tension at equalizer, then remove cable from parking brake lever and remove return spring, locknut, lever, lever...
CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Regal cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston w/Dual Mounting Bolts (Type 3) -> FRONT BRAKE ASSEMBLY -> BRAKE SHOE & LINING INSTALLATION -> BRAKE SHOE & LINING REMOVAL -> CALIPER ASSEMBLY -> CALIPER DISASSEMBLY -> CALIPER INSTALLATION -> CALIPER REMOVAL
Vehicle: 1991 Buick Regal Limited 3.1 V6 GAS
CALIPER REMOVAL
- Drain approximately2/3 of brake fluid from master cylinder assembly.
- Raise and support vehicle, then remove tire and wheel assembly.
- If caliper is to be serviced or replaced, remove bolt securing inlet fitting, then disconnect brake hose, and plug end to prevent loss of fluid and contamination. Do not crimp brake hose, as this may damage internal structure of hose. If only shoe and lining assemblies are being replaced, do not disconnect brake hose from caliper.
- Remove caliper retaining bolts and boots, Fig. .
- Compress piston, placing suitable adjustable pliers ov...
CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Buick Regal cars and light trucks from 1990+.
HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> SYSTEM SERVICE -> BLEEDING BRAKES -> Flushing Hydraulic System -> Manual Bleeding -> Pressure Bleeding -> Wheel Bleeding Sequence
Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS
BLEEDING BRAKES
Manual Bleeding
Pressure bleeding is recommended for all hydraulic systems. However, if a pressure bleeder is unavailable, use the following procedure.Brake fluid damages painted surfaces. Immediately clean any spilled fluid.
- Remove vacuum reserve by pumping brakes several times with engine off.
- Fill master cylinder reservoir with clean brake fluid. Check fluid level often during bleeding procedure; do not let reservoir fall below half full.
- If necessary, bleed master cylinder as follows:
- Disconnect master cylinder forward brake line connection until fluid flows from re...
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