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ON-VEHICLE SERVICE TSB Revision BASIC BRAKE SYSTEM 35A-19 (1) Run the engine for one or two minutes, and then stop it. If the pedal depresses fully the first time but gradually (2) With the engine stopped, step on the brake pedal several times. Then step on the brake pedal and start the engine. (3) With the engine running, step on the brake pedal and then stop the engine. Hold the pedal depressed for 30 2. If the above three tests are okay, the booster is OK. If one of the above three tests is not okay, the check valve, vacuum .), vacuum hose for leaks, high volume engine vacuum applied to booster. Repair or replace as necessary. CHECK VALVE OPERATION CHECK M1351009000064 CAUTION The check valve should not be removed from the vacuum AC000870 GOOD NO GOOD AB AC000871AB WHEN ENGINE WHEN ENGINE AC000872 GOOD NO GOOD AB |