Brake Master Cylinder: Description and Operation

Brake Master Cylinder





The brake master cylinder is a dual piston type. The brake master cylinder operates as follows:
^ When the brake pedal is depressed, pressure is applied by mechanical linkage to the primary and secondary piston.
^ Brake master cylinder pistons apply hydraulic pressure to the two hydraulic circuits.
^ ABS brake master cylinder will not be overhauled, due to internal adjustments which require extensive special tools and fixtures. Service is made by replacement only.

The brake master cylinder consists of:
^ brake master cylinder reservoir
^ brake master cylinder body

Brake Master Cylinder Reservoir

NOTE: Whenever the brake master cylinder reservoir is removed from the brake master cylinder, new grommets must be installed.

The brake master cylinder reservoir:
^ is mounted to the brake master cylinder.
^ holds fluid supply for each brake master cylinder hydraulic piston.
^ provides visual fluid level markings.
^ contains the brake master cylinder fluid level sensor.