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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Ford Bronco II car and truck
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BRAKE SERVICE PROCEDURES FOR 1990 Ford Bronco II AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Ford Bronco II cars and light trucks from 1990+.
POWER BRAKE UNITS, FORD -> Bendix Hydro-Boost Brake Booster -> BRAKE BOOSTER SERVICE -> INSTALLATION -> REMOVAL
Vehicle: 1990 Ford Bronco II 2.9 V6 GAS
The hydra-boost power brake booster is serviced as a unit.
REMOVAL
- With engine off, depress brake pedal several times to discharge the accumulator.
- Remove master cylinder from brake booster and position up and out of the way. Do not apply booster with master cylinder removed.
- Disconnect three hydraulic lines from booster, then disconnect input pushrod from brake pedal assembly, Fig. .
- Remove booster mounting nuts, then remove booster from vehicle. Do not carry booster by the accumulator and be careful not to drop booster on the accumulator. The snap ring on the accumulator shou...
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BRAKE SERVICE PROCEDURES FOR 1990 Ford Bronco II AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Ford Bronco II cars and light trucks from 1990+.
POWER BRAKE UNITS, FORD -> Bendix Hydro-Boost Brake Booster -> DIAGNOSIS & TESTING -> HYDRA-BOOST LEAK TEST -> PERFORMANCE CHECK -> RESERVE RETENTION CHECK
Vehicle: 1990 Ford Bronco II 2.9 V6 GAS
Normal hydro-boost units will produce certain noises that current technology cannot correct. These noises occur when brake pedal is manipulated in a manner not associated with everyday braking habits. Normal operating noise can be a hissing, clunk, click or a chatter.
If above normal pedal efforts are applied, the hydra-boost unit will emit hissing noises. These noises will be particularly noticeable with the vehicle motionless and will increase in intensity as pedal efforts increase and system operating temperatures increase. Loud hissing noises at or below normal pedal effo...
CLICK HERE TO GET FULL ACCESS TO 1990 Ford Bronco II BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Ford Bronco II AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Ford Bronco II cars and light trucks from 1990+.
HYDRAULIC BRAKE SYSTEMS, FORD -> MASTER CYLINDER REPLACE -> AEROSTAR -> BRONCO II, RANGER & EXPLORER -> BRONCO, ECONOLINE & F SERIES -> Less Power Brakes -> With Power Brakes
Vehicle: 1990 Ford Bronco II 2.9 V6 GAS
AEROSTAR
- Disconnect brake warning lamp electrical connector from master cylinder.
- Disconnect hydraulic lines from master cylinder, then remove master cylinder to brake booster retaining nuts and the master cylinder.
- Before installing cylinder, check distance from outer end of master cylinder pushrod to front face of booster assembly using suitable gauge block, Fig. . Pushrod length should be .980-.995 inch. Turn pushrod adjusting screw inward or outward until specified length is achieved.
- Reinstall master cylinder and retaining nuts, reconnect hydraulic lines and brake warni...
CLICK HERE TO GET FULL ACCESS TO 1990 Ford Bronco II BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Ford Bronco II AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Ford Bronco II cars and light trucks from 1990+.
ANTI-LOCK BRAKE SYSTEM, FORD -> COMPONENT REPLACEMENT -> 1990-91 Models -> COMPUTER MODULE -> EXCITER RING -> REAR ANTI-LOCK BRAKE SYSTEM (RABS) VALVE -> REAR ANTI-LOCK BRAKE SYSTEM SENSOR
Vehicle: 1990 Ford Bronco II 2.9 V6 GAS
All components are serviced as assemblies and should not be disassembled.
COMPUTER MODULE
1990-91 Models
- Disconnect battery ground cable.
- On all models, disconnect wiring harness from RABS module.
- On Bronco II, Ranger and Explorer models, remove module to instrument panel retaining screws behind center of instrument panel.
- On Aerostar models, remove module to instrument panel anti-skid plate retaining screws on lefthand side of engine cover under instrument panel.
- On E-Series models, remove parking brake actuator assembly as follows:
- Loosen adjusting nut at equalizer.
- From inside e...
CLICK HERE TO GET FULL ACCESS TO 1990 Ford Bronco II BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Ford Bronco II AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Ford Bronco II cars and light trucks from 1990+.
ANTI-LOCK BRAKE SYSTEM, FORD -> DIAGNOSIS & TESTING -> ACCESSING FLASHOUT CODES -> Anti-Lock Brake System (Yellow) Warning Lamp -> Brake System (Red) Warning Lamp -> DIAGNOSTIC CODES -> INSTRUMENTATION CHECKS -> SYSTEM COMPONENT LOCATIONS -> TROUBLE CODE IDENTIFICATION
Vehicle: 1990 Ford Bronco II 2.9 V6 GAS
SYSTEM COMPONENT LOCATIONS
Refer to system component locations, Figs. through , whenever diagnosis is required. Always disconnect the battery ground cable whenever checking resistance values within the system.
INSTRUMENTATION CHECKS
Brake System (Red) Warning Lamp
To check brake system warning lamp, turn ignition key to the Start position. The red warning lamp should glow momentarily. The warning lamp will also illuminate if the parking brake mechanism is not fully released. If warning lamp fails to glow, service of the electrical system is indicated. If warning lamp illu...
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BRAKE SERVICE PROCEDURES FOR 1990 Ford Bronco II AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Ford Bronco II cars and light trucks from 1990+.
POWER BRAKE UNITS, FORD -> Bendix Vacuum Brake Booster -> DESCRIPTION
Vehicle: 1990 Ford Bronco II 2.9 V6 GAS
The single and tandem vacuum boosters are self contained vacuum hydraulic power braking units. These are vacuum suspended units that use vacuum and atmospheric pressure for their power.
On gasoline engine vehicles, vacuum is supplied through a fitting in the intake manifold. On diesel engine vehicles, vacuum is supplied through a vacuum pump.
The three basic elements of the booster are the vacuum power chamber, mechanically actuated booster check valve an...
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