Bench Bleeding

Bleeding Master Cylinder:

CAUTION: When clamping the master cylinder in a vise for bleeding, carefully tighten the vise just enough to hold the master cylinder from moving. Excessive pressure can damage the master cylinder.

PROCEDURE
1. Clamp the master cylinder in a vise.
2. Attach Bleeding Thbes, Special Tool 8129 to master cylinder. Position the bleed tubes in the fluid reservoir of the master cylinder so the outlets are below the surface of the brake fluid when the reservoir is filled to the proper level.
3. Fill reservoir with brake fluid conforming to DOT 3 specifications such as Mopar or Equivalent.
4. Using a wooden dowel per. Depress master cylinder pistons slowly, and then allow pistons to return to released position. Repeat several times until all air bubbles are expelled.
5. Remove bleeding tubes from cylinder, plug outlets and install caps.
6. Remove master cylinder from vise and install on power brake vacuum booster.

NOTE: It is not necessary to bleed the entire hydraulic system after replacing the master cylinder, providing that the master cylinder has been bled and filled upon installation.