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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Chevrolet Lumina APV car and truck
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BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet Lumina APV AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet Lumina APV cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> Four Wheel Anti-Lock Brake System -> TROUBLESHOOTING
Vehicle: 1990 Chevrolet Lumina APV 3.1 V6 GAS
Refer to Figs. throug...
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BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet Lumina APV AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet Lumina APV cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston Caliper -> CALIPER SERVICE -> ASSEMBLE -> DISASSEMBLE -> INSTALLATION -> REMOVAL
Vehicle: 1990 Chevrolet Lumina APV 3.1 V6 GAS
REMOVAL
- Siphon enough brake fluid out of the master cylinder to bring fluid level to1-3 full to avoid fluid overflow when the caliper piston is pushed back into its bore.
- Raise and support vehicle, remove front wheels.
- Using a C-clamp, as illustrated in Fig. , push piston back into its bore.
- Remove two mounting bolts and lift caliper away from disc.
DISASSEMBLE
- Disconnect hose from the caliper being careful not to lose copper washers.
- Remove caliper as outlined above.
- Drain brake fluid from caliper.
- Pad caliper interior with clean shop towels and apply compressed air to remove piston, Fi...
CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet Lumina APV BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet Lumina APV AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet Lumina APV cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> TROUBLESHOOTING -> BRAKE RATTLE -> BRAKE ROUGHNESS OR CHATTER; PEDAL PUMPING -> CALIPER BRAKE FLUID LEAK -> EXCESSIVE PEDAL EFFORT -> EXCESSIVE PEDAL TRAVEL -> HEAVY BRAKE DRAG -> NO BRAKING EFFECT WHEN BRAKE PEDAL IS DEPRESSED -> PULL, UNEVEN OR GRABBING BRAKES -> REAR BRAKES LOCKING ON APPLICATION
Vehicle: 1990 Chevrolet Lumina APV 3.1 V6 GAS
EXCESSIVE PEDAL TRAVEL
- Worn brake linings.
- Disc pads knock back after cornering or rough road travel.
- Piston and linings not properly seated or positioned.
- Insufficient fluid in system.
- Loose wheel bearing adjustment.
- Damaged or worn caliper piston seal.
- Improper booster pushrod adjustment.
- Pads out of flat more than .005 inch.
- Rear brake automatic adjusters inoperative.
- Improperly ground rear brake shoes.
BRAKE ROUGHNESS OR CHATTER; PEDAL PUMPING
- Excessive lateral runout of rotor.
- Rotor excessively out of parallel.
EXCESSIVE PEDAL EFFORT
- Frozen or seized pistons.
- Brake fluid, oil or grease on ...
CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet Lumina APV BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet Lumina APV AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet Lumina APV cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> General Service -> GENERAL SERVICE PROCEDURES
Vehicle: 1990 Chevrolet Lumina APV 3.1 V6 GAS
Certain general service procedures apply, regardless of whether the brakes are vacuum or hydraulically assisted. Only top quality, clean brake fluid should be used. More seals and valves are used with power brake systems than with ordinary brakes, so an inferior brake fluid will do much more damage. For the same reason, be sure all dirt is kept out of the system. Additionally, on models with hydraulic assist brakes, care must be taken not to mix the fluids of the booster hydraulic system and brake hydraulic system as the fluids are not compatible.
If the power unit fai...
CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet Lumina APV BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet Lumina APV AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet Lumina APV cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston Caliper -> DESCRIPTION
Vehicle: 1990 Chevrolet Lumina APV 3.1 V6 GAS
The caliper assembly, Fig. , slides on its mounting surfaces. Upon brake application, hydraulic pressure against the piston forces the inboard pad against the inboar...
CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet Lumina APV BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Chevrolet Lumina APV AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Chevrolet Lumina APV cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> SERVICE PRECAUTIONS -> BLEEDING DISC BRAKES -> BRAKE DISC SERVICE -> BRAKE LINES & LININGS -> BRAKE ROUGHNESS -> GENERAL PRECAUTIONS -> INSPECTION OF CALIPER
Vehicle: 1990 Chevrolet Lumina APV 3.1 V6 GAS
BRAKE LINES & LININGS
Remove one of the front wheels and inspect the brake disc, caliper and linings.
Do not get any oil or grease on the linings. It is recommended that all linings be replaced in sets when worn or damaged.
If the caliper is cracked or fluid leakage through the casting is evident, it must be replaced as a unit.
BRAKE ROUGHNESS
The most common cause of brake chatter on disc brakes is a variation in thickness of the disc. If roughness or vibration is encountered during highway operation or if pedal pumping is experienced at low speeds, the disc may have excessive t...
CLICK HERE TO GET FULL ACCESS TO 1990 Chevrolet Lumina APV BRAKE SERVICE PROCEDURES
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