Master cylinder
The design of the master cylinder is intended for use in a braking system with a diagonal division of circuits. In the first circuit, servicing the brake mechanisms of the front wheel and the diagonally opposite rear wheel, the fluid is pumped by a piston connected to a pusher. In the other circuit, servicing the second front wheel and the opposite rear wheel, the fluid is pumped by a floating piston. The master cylinder in question performs the functions of a conventional two-section master cylinder, as well as a low brake fluid level indicator.
Note: Do not blow compressed air containing oil onto brake system components as this may damage rubber components.
- Replace with new all components for which there is a replacement in the repair kit intended for servicing the master cylinder.
- Lubricate all rubber parts with clean brake fluid to facilitate subsequent assembly.
- If any hydraulic component has been removed or disconnected during repair, it may be necessary to bleed the brake system completely or partially. See Part 4A. Hydraulic brakes.
- Tightening torques for threaded connections are specified for dry, unlubricated fasteners.
- All maintenance operations must be carried out on a clean table, not contaminated with mineral oil.
Liquid level sensor
The master cylinder reservoir is equipped with a brake fluid level sensor. This sensor turns on the BRAKE indicator lamp when the brake fluid level is low. The BRAKE indicator lamp also turns on when the parking brake is applied and, in order to check the lamp itself, when the ignition switch is turned to the "ON" position and the engine is not running. Diagnostics of the BRAKE indicator lamp is discussed in Part 4A, "Hydraulic Brake System".
Tightening torques for threaded connections
|
Application
|
Nm
|
lb-ft
|
lb-in
|
|
Master cylinder mounting nuts
|
13
|
-
|
115
|
|
Master Cylinder Brake Pipe Fittings
|
16
|
12
|
-
|
(Original version of the article on the website: CHEVYMAN)