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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Cadillac Fleetwood car and truck
repair procedures including Cadillac 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 1990 Cadillac Fleetwood automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1990 Cadillac Fleetwood
- 1990 Cadillac Fleetwood 4.5 V8 GAS, CID:273, Fuel Injection, Aspiration:273, Engine VIN:, Desg:3
- 1990 Cadillac Fleetwood 60 Special 4.5 V8 GAS, CID:273, Fuel Injection, Aspiration:273, Engine VIN:, Desg:3
- 1990 Cadillac Fleetwood Brougham 5.0 V8 GAS, CID:307, Carburetor, Aspiration:307, Engine VIN:, Desg:Y
- 1990 Cadillac Fleetwood Brougham 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:7
- 1990 Cadillac Fleetwood Brougham 5.0 V8 GAS, CID:307, Carburetor, Aspiration:307, Engine VIN:, Desg:9
BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Fleetwood AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Fleetwood cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> DELCO-MORAINE TANDEM DIAPHRAGM TYPE -> Assembly -> Brakes Grab -> DESCRIPTION -> Disassembly -> Hard Pedal -> OVERHAUL -> Slow Or No Release -> TROUBLESHOOTING
Vehicle: 1990 Cadillac Fleetwood 4.5 V8 GAS
DESCRIPTION
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 .
The unit operates in much the same manner as the single diaphragm unit described previously. The diaphragm and plate assemblies utilize the pressure differential between the engine intake manifold vacuum and atmospheric pressure to assist in braking.
TROUBLESHOOTING
Hard Pedal
- Internal vacuum leak.
- Faulty control valve.
Brakes Grab
- Faulty control valve...
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BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Fleetwood AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Fleetwood cars and light trucks from 1990+.
DRUM BRAKES, GENERAL MOTORS -> Types 1 & 2 -> INSPECTION
Vehicle: 1990 Cadillac Fleetwood Brougham 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...
CLICK HERE TO GET FULL ACCESS TO 1990 Cadillac Fleetwood BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Fleetwood AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Fleetwood cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> TESTING PROPORTIONING VALVE
Vehicle: 1990 Cadillac Fleetwood Brougham 5.0 V8 GAS
When a premature rear wheel slide is obtained on a brake application, it usually is an indication that the fluid pressure to the rear wheels is above the 50% reduction ratio for the rear line pressure and that malfunction has occurred within the proportioning valve.
To test the valve, install gauge set shown in Fig. in brake line between master cylinder and proportioning valve, and at outpu...
CLICK HERE TO GET FULL ACCESS TO 1990 Cadillac Fleetwood BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Fleetwood AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Fleetwood 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 Cadillac Fleetwood Brougham 5.7 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...
CLICK HERE TO GET FULL ACCESS TO 1990 Cadillac Fleetwood BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Fleetwood AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Fleetwood cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> 1990 Bonneville, DeVille, Eighty-Eight, Electra, Fleetwood, Ninety-Eight, Park Avenue & 6000 (Teves Type) -> OPERATING PRECAUTIONS -> COMPUTER SYSTEM SERVICE PRECAUTIONS -> GENERAL SERVICE PRECAUTIONS
Vehicle: 1990 Cadillac Fleetwood 60 Special 4.5 V8 GAS
Some of the following procedures require that hydraulic lines, hoses and fittings be disconnected for inspection of testing. This Teves brake system uses a hydraulic accumulator which, when completely charged, contains brake fluid under high pressure. Before disconnecting any hydraulic lines, hoses or fittings, ensure the accumulator is completely depressurized as described further on. Failure to depressurize the hydraulic accumulator may result in personal injury and/or damage to painted surfaces and/or the vehicle.
Certain components in the system are not intended to be s...
CLICK HERE TO GET FULL ACCESS TO 1990 Cadillac Fleetwood BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Fleetwood AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Fleetwood cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> GIRLOCK SINGLE DIAPHRAGM TYPE -> Assembly -> Brakes Grab -> Brakes Slow To Release Or Drag -> Brakes Slow To Respond -> DESCRIPTION -> Disassembly -> Excessive Pedal Effort -> OVERHAUL -> TROUBLESHOOTING
Vehicle: 1990 Cadillac Fleetwood 4.5 V8 GAS
DESCRIPTION
This booster is a single diaphragm, vacuum suspended unit with a lightweight cast alloy housing,Fig. . Vacuum is applied to the front and rear housings. When the brake pedal is released, negative pressure is equalized on both sides of the diaphragm and power piston assembly. Spring tension holds the piston at the rest position. When the brakes are applied, the atmospheric port in the power piston is opened. Negative pressure in the front chamber pulls the diaphragm and vacuum piston assembly, reaction disc and output rod forward. Pressure on the master c...
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