FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Bore End Seal Leak Test

REMOVAL
WARNING: BRAKE FLUID CONTAINS POLYGLYCOL ETHERS AND POLYGLYCOLS. AVOID CONTACT WITH EYES. WASH HANDS THOROUGHLY AFTER HANDLING. IF BRAKE FLUID CONTACTS EYES, FLUSH EYES WITH RUNNING WATER FOR 15 MINUTES. GET MEDICAL ATTENTION IF IRRITATION PERSISTS. IF TAKEN INTERNALLY, DRINK WATER AND INDUCE VOMITING. GET MEDICAL ATTENTION IMMEDIATELY.

1. Raise and support the hood.
2. Disconnect the battery ground cable.
3. Disconnect the brake fluid level warning switch electrical connector if necessary.
4. Remove the two brake master cylinder nuts.
7. Pull the brake master cylinder away from booster.

INSPECTION
^ Inspect end of master cylinder bore for signs of excessive leaking. Some fluid is normal due to the wiping action of the seal.
^ Inspect inside booster for presence of brake fluid. A plastic tie strap can be inserted through push-rod opening or through booster check valve opening and into bottom of booster and checked for fluid.
^ If excessive fluid is found, master cylinder will need to be removed and overhauled. Refer to Master cylinder - Service and Repair. Master Cylinder, Brakes
^ Booster should be replaced if booster is contaminated with a large quantity of fluid. Refer to Brake Booster. Service and Repair

INSTALLATION
NOTE: Tighten mounting nuts to 10-16 Nm (8-12 ft.lbs)

- To install, reverse the removal procedure.