Master Cylinder - Bench Bleed
Brake Master Cylinder-Bench BleedWarning:
^ Use of any other than the approved DOT 3 brake will cause permanent damage to brake components and will render the brakes inoperative. Failure to follow these instructions may result in personal injury.
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. Failure to follow these instructions may result in personal injury.
Caution:
^ Do not allow the brake master cylinder degas bottle to run dry during the bleeding operation. Keep the brake master cylinder degas bottle filled with the specified brake fluid. Never reuse the brake fluid that has been drained from the hydraulic system.
Caution:
^ Brake fluid is harmful to painted and plastic surfaces. If brake fluid is spilled onto a painted or plastic surface, immediately wash it with water.
Note:
^ When any part of the hydraulic system has been disconnected for repair or a new component is installed, air may enter the system, causing spongy brake pedal action. This requires the bleeding of the hydraulic system after it has been correctly connected.
1. Support the brake master cylinder body in a soft jaw vise, and fill the brake master cylinder degas bottle with specified brake fluid.
1. Use DOT 3 brake fluid.
2. Install plugs in the front and rear brake outlet ports.
3. Loosen the plug in the front outlet port and slowly depress the primary piston.
4. Tighten the plug in the front outlet port and release the primary piston.
5. Repeat this procedure until clear, bubble-free brake fluid flows.
6. Repeat Steps 3, 4, and 5 for the rear outlet port with the front outlet port plugged.
7. Tighten the plugs and attempt to depress the primary piston. The piston will not depress if all the air is bled out of the system.
8. Install the degas bottle cap and install the brake master cylinder in the vehicle.