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AC000872 Good No good AB ON-VEHICLE SERVICE SERVICE BRAKES 35A-7 (3) With the engine running, step on the brake pedal and then stop the engine. Hold the 2. If the above three tests are okay, the booster is OK. If one of the above three tests is not okay, the ), vacuum hose for leaks, high volume engine vacuum applied to booster. Repair or CHECK VALVE OPERATION CHECK M1351009000462 CAUTION The check valve should not be removed from the ). CAUTION If the check valve is defective, replace it as an AC000873AE A B Valve Spring Intake manifold Booster side 2. Check the operation of the check valve by using a vacuum pump. Vacuum pump Accept/reject criteria Connection at the brake A negative pressure Connection at the intake A negative pressure BLEEDING M1351001400552 CAUTION Use only brake fluid DOT 3 or DOT 4. Never mix MASTER CYLINDER BLEEDING The master cylinder has no check valve, so if bleed- AC000876 3. Have another person cover the master cylinder outlet with a finger. 4. With the outlet still closed, release the brake pedal. 5. Repeat steps 2 − 4 three or four times to fill the inside of the master cylinder with brake fluid. |