Master Cylinder Bleeding

STANDARD PROCEDURE - MASTER CYLINDER BLEEDING

CAUTION: When clamping master cylinder in vise, only clamp master cylinder by its mounting flange, do not clamp on primary piston, seal or body of master cylinder.

1. Clamp the master cylinder in a vise using only the mounting flange.

NOTE: Two different size bleeding tubes need to be used depending on which type of master cylinder the vehicle is equipped with. Vehicles equipped with traction control have different size brake tubes and nuts at the master cylinder than the non-traction control equipped vehicles. Be sure the correct size bleeding tubes are used when bleeding the master cylinder.

2. Thread Bleeding Tubes, Special Tool 8358, for a non-traction control master cylinder or Special Tool 8129 for a traction control master cylinder into master cylinder primary and secondary ports. Position outlet ends of bleeding tubes in reservoir with the outlets below surface of brake fluid when reservoir is filled to its proper level.
3. Fill brake fluid reservoir with Mopar brake fluid or equivalent conforming to DOT 3 (DOT 4 and DOT 4+ are acceptable) specifications.
4. Using a wooden dowel, depress push rod slowly, and then allow pistons to return to released position. Repeat several times until all air bubbles are expelled from master cylinder.
5. Remove bleeding tubes from master cylinder outlet ports, and then plug outlet ports and install fill cap on reservoir.
6. Remove master cylinder from vise.
7. Install the filler cap on master cylinder fluid reservoir.
8. Install master cylinder.