Operation CHARM: Car repair manuals for everyone.

Brake Fluid: Service and Repair

CAUTION: Brake fluid may irritate eyes and skin. In case of contact, take the following actions:
^ Eye contact - rinse thoroughly with water.
^ Skin contact - wash with soap and water.

CAUTION: Use only SUPREME 11 or equivalent DOT 3 brake fluid from a clean, sealed container. Do not use fluid from an open container that may be contaminated with water. Improper or contaminated fluid could result in damage to components, or loss of braking, with possible personal injury.

NOTICE: Avoid spilling brake fluid on any of the vehicle's painted surfaces, wiring cables or electrical connectors. Brake fluid will damage paint and electrical connections. If any fluid is spilled on the vehicle, flush the area with water to lessen damage.

Important:
^ Do not use power steering or transmission fluid in the brake system.
^ Do not reuse brake fluid accumulated during brake system bleeding.
^ Always store brake fluid in a closed container. Reseal brake fluid containers immediately after use. Do not use brake fluid left in an open or improperly sealed container, because it absorbs moisture, or can become contaminated.

Improper brake fluid, mineral oil (i.e., power steering fluid and transmission fluid) or water in the fluid may cause the fluid to boil, or the rubber components in the brake hydraulic system to deteriorate.

If the master cylinder cap diaphragm is swollen, then rubber parts have deteriorated. Swollen wheel cylinder boots and caliper piston boots are another indication of substandard or contaminated fluid.

If deterioration of rubber parts is evident, disassemble all serviceable hydraulic components. Dry these parts with nonlubricated compressed air to keep alcohol out of the system. Replace ALL rubber parts in the system, including hoses and nonserviceable hydraulic components.

Refill the brake system with new brake fluid then flush and bleed the system.