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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1992 Mercury Grand Marquis car and truck repair procedures including Mercury 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 1992 Mercury Grand Marquis automobile. Try the Automotix DIY solution today!
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BRAKE SERVICE PROCEDURES FOR 1992 Mercury Grand Marquis AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1992 Mercury Grand Marquis cars and light trucks from 1990+.

Anti-lock Brakes -> Continental, Crown Victoria, Grand Marquis, Sable, Taurus & Town Car -> Description -> 1993 Crown Victoria, Grand Marquis & Town Car -> ABS Module (Electronic Control Unit) -> Anti-Lock Brakes -> Hydraulic Control Unit -> Master Cylinder -> OPERATION -> Pedal Travel Switch -> SYSTEM COMPONENTS -> TRACTION ASSIST -> Vacuum Booster -> Wheel Sensors
Vehicle: 1992 Mercury Grand Marquis 4.6 V8 GAS

The anti-lock system (ABS), Fig. , controls each brake separately. The brake pedal force required to engage the system may vary with road surface conditions. A dry surface will require a high force, while a slippery surface will require a much less force. During system operation, the driver will sense a slight brake pedal pulsation accompanied by a rise in brake pedal height and a clicking sound. The pedal effort and pedal feel during normal braking are similar to a conventional power brake system.

SYSTEM COMPONENTS
Vacuum Booster

The diaphragm type brake booster is self-contained and ...

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BRAKE SERVICE PROCEDURES FOR 1992 Mercury Grand Marquis AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1992 Mercury Grand Marquis cars and light trucks from 1990+.

Hydraulic Brake Systems -> Brake System Bleed -> DUAL MASTER CYLINDER BLEEDING NOTES -> SYSTEM PRIMING -> TESTING DUAL MASTER CYLINDERS -> WHEEL BLEEDING SEQUENCE
Vehicle: 1992 Mercury Grand Marquis 4.6 V8 GAS

Pressure bleeding is recommended for all hydraulic brake systems.

The bleeding operation itself is fairly well standardized. First step in all cases is cleaning the dirt from the filler cap before removing it from the master cylinder. This should be done thoroughly.

Pressure bleeding is fastest because the master cylinder doesn't have to be refilled several times, and the job can be done by one man. To prevent air from the pressure tank getting into the lines, do not shake the tank while air is being added to the tank or after it has been pressurized. Set the tank in the requir...

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BRAKE SERVICE PROCEDURES FOR 1992 Mercury Grand Marquis AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1992 Mercury Grand Marquis cars and light trucks from 1990+.

Anti-lock Brakes -> Continental, Crown Victoria, Grand Marquis, Sable, Taurus & Town Car -> Precautions -> HYDRAULIC BRAKE FLUID COLOR
Vehicle: 1992 Mercury Grand Marquis 4.6 V8 GAS

HYDRAULIC BRAKE FLUID COLOR

Hydraulic brake fluid must conform with the requirements of Federal Motor Vehicle Safety Standard 116. Under this standard, brake fluids are visually different from other automotive fluids such as transmission, power steering and engine.

Fluid color in a normal brake system may vary from its original color for many reasons. A brake master cylinder may show significantly different shades fluid color between the two brake master cylinder reservoirs. Color may also appear to vary between cast steel and die cast aluminum reservoirs. Some reasons for discolorati...

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BRAKE SERVICE PROCEDURES FOR 1992 Mercury Grand Marquis AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1992 Mercury Grand Marquis cars and light trucks from 1990+.

Hydraulic Brake Systems -> Description -> BRAKE DISTRIBUTION VALVE & SWITCH -> BRAKE WARNING LIGHT SWITCHES -> COMBINATION VALVE -> Description -> DIAGONALLY SPLIT SYSTEMS -> Failure Warning Switch -> FRONT & REAR SPLIT SYSTEMS -> Metering Valve -> Proportioner Or Pressure Control Valves -> PROPORTIONING VALVE -> Testing -> Testing Warning Light System
Vehicle: 1992 Mercury Grand Marquis 4.6 V8 GAS

FRONT & REAR SPLIT SYSTEMS

When the brake pedal is depressed, both the primary (front brake) and the secondary (rear brake) master cylinder pistons are moved simultaneously to exert hydraulic fluid pressure on their respective independent hydraulic systems. The fluid displacement of the master cylinder is proportioned to fulfill the requirements of each of the two independent hydraulic brake systems, Fig. .

If a failure of a rear (secondary) brake system should occur, initial brake pedal movement causes the unrestricted secondary piston to bottom in the master cylinder bore. Primary p...

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BRAKE SERVICE PROCEDURES FOR 1992 Mercury Grand Marquis AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1992 Mercury Grand Marquis cars and light trucks from 1990+.

Hydraulic Brake Systems -> Component Service -> Assemble -> Disassemble -> Inspection -> MASTER CYLINDER OVERHAUL -> Overhaul -> WHEEL CYLINDERS
Vehicle: 1992 Mercury Grand Marquis 4.6 V8 GAS

MASTER CYLINDER OVERHAUL
Disassemble
  • Clean outside of master cylinder thoroughly. Drain brake fluid from master cylinder.
  • Remove stop bolt and pressure control valves, if equipped.
  • Using a screwdriver, carefully pry up on reservoir and remove it from master cylinder body.
  • Remove fluid control valve, if equipped.
  • Depress primary piston and remove snap ring from retaining groove at open end of bore.
  • Remove primary and secondary piston assemblies from master cylinder. If secondary piston does not come out, apply air pressure to secondary outlet port to remove.
Inspection

When disassembled...

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BRAKE SERVICE PROCEDURES FOR 1992 Mercury Grand Marquis AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1992 Mercury Grand Marquis cars and light trucks from 1990+.

Power Brake Units -> Adjustments -> Bendix Type -> PUSHROD -> Single Diaphragm Booster
Vehicle: 1992 Mercury Grand Marquis 4.6 V8 GAS

On vehicles equipped with anti-lock brakes refer to appropriate "Anti-Lock Brakes".

PUSHROD

Proper adjustment of the master cylinder pushrod is necessary to ensure proper operation of the power brake system. A pushrod that is too long will prevent the master cylinder piston from completely releasing hydraulic pressure, eventually, causing the brakes to drag. A pushrod that is too short will cause excessive brake pedal travel and cause groaning noises to come from the booster when the brakes are applied. A properly adjusted pushrod that remains assembled to the booster with which is was ...

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