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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Cadillac Eldorado car and truck
repair procedures including Cadillac engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
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BRAKE SERVICE PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Cadillac Eldorado cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> INSPECTION OF CALIPER
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
Should it become necessary to remove the caliper for installation of new parts, clean all parts in alcohol, wipe dry using lint free cloths, using an air hose to blow out drilled passages and bores. Check dust boots for punctures or tears. If punctures or tears are evident, new boots should be installed upon reassembly.
Inspect piston bores for scoring or pitting. Bores that show light scratches or corrosion can usually be cleaned with crocus cloth. However, bores that have deep scratches or scoring may be honed, provided the diameter of the...
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BRAKE SERVICE PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Cadillac Eldorado cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> TESTING PROPORTIONING VALVE
Vehicle: 1991 Cadillac Eldorado 4.9 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...
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BRAKE SERVICE PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Cadillac Eldorado cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> GENERAL SERVICE -> AIR METHOD -> Delco-Moraine Type -> GAUGE METHOD -> POWER BOOSTER REPLACE -> PRECAUTIONS -> PUSHROD ADJUSTMENT -> Single Diaphragm Type
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
Two basic types of power assist mechanisms are used: vacuum assist diaphragm assemblies, which use engine vacuum or, in some cases vacuum pressure developed by an external vacuum pump. The second type is a hydraulic pressure assist mechanism, which use pressure developed by an external pump (usually the power steering pump). Both systems act to increase the force exerted on the master cylinder piston by the operator. This in turn increases the hydraulic pressure delivered to the wheel cylinders, while decreasing driver effort necessary to obtain acceptable stopping performance.
V...
CLICK HERE TO GET FULL ACCESS TO 1991 Cadillac Eldorado BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Cadillac Eldorado cars and light trucks from 1990+.
HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> WHEEL CYLINDER OVERHAUL
Vehicle: 1991 Cadillac Eldorado 4.9 V8 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 Cadillac Eldorado BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Cadillac Eldorado cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> TOYOTA/GM SINGLE DIAPHRAGM TYPE -> ADJUSTMENTS -> Assembly -> Booster Pushrod -> Brake Pedal -> Brakes Drag -> Brakes Grab -> Disassembly -> Hard Pedal/Brakes Inefficient -> Low Or Spongy Brake Pedal -> OVERHAUL -> TROUBLESHOOTING
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
ADJUSTMENTS
Brake Pedal
- With engine running and brake pedal in rest position, measure distance between face of pedal and floor mat.
- If distance is not 5.79-6.18 inches, adjust pedal height as follows:
- Remove left lower instrument panel trim section and air duct.
- Loosen stop lamp switch sufficiently to gain clearance for pedal adjustment.
- Loosen locknut and rotate pedal pushrod as needed to obtain specified pedal height, then tighten locknut.
- Adjust position of brake light switch so that plunger lightly contacts pedal stopper and brake lamps are off when pedal is release...
CLICK HERE TO GET FULL ACCESS TO 1991 Cadillac Eldorado BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Cadillac Eldorado cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> 1991 Caprice, Custom Cruiser, Eldorado, Reatta, Riviera, Roadmaster, Seville, Toronado & Trofeo (Bosch 2 U Type) -> SYSTEM SERVICE -> Caprice, Custom Cruiser & Roadmaster -> Caprice, Customer Cruiser & Roadmaster. -> Eldorado, Reatta, Riviera, SeVille, Toronado & Trofeo -> ELECTRONIC BRAKE CONTROL MODULE (EBCM), REPLACE -> HYDRAULIC MODULATOR VALVE, REPLACE -> LEFT FRONT WHEEL SPEED SENSOR, REPLACE -> OVERVOLTAGE PROTECTION RELAY (OVP), REPLACE -> Rear axle speed sensor, replace -> REAR WHEEL SPEED SENSOR, REPLACE -> RIGHT FRONT WHEEL SPEED SENSOR, REPLACE -> SERVICE PRECAUTIONS -> SOLENOID VALVE RELAY & PUMP MOTOR RELAY
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
SERVICE PRECAUTIONS
Before performing any repairs on the ABS system, note the following precautions:
- If any welding work is to be done on the vehicle using an arc welder, the EBCM and hydraulic modulator connectors should be disconnected.
- Hydraulic modulator and EBCM connectors should never be disconnected when the ignition switch is on.
- Do not use a fast charger to charge battery when battery is connected. Always disconnect battery from system before using a fast charger. Never disconnect battery from system with engine running.
- Always note routing, position and mounting of electrica...
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