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MASTER CYLINDER SERVICE PROCEDURES

MASTER CYLINDER REMOVAL

Disconnect primary and secondary brake tubes from master cylinder housing. Install plugs at brake tube outlets.

Remove 2 nuts (Fig. 3) attaching master cylinder housing to power brake booster unit.

Fig. 3 Master Cylinder Mounting

Slide master cylinder straight out, and away from power brake booster unit.

BRAKE FLUID RESERVOIR REPLACEMENT

Clean master cylinder housing and brake fluid reservoir.

Remove the brake fluid reservoir caps. Using a syringe or equivalent empty brake fluid from reservoir.

Position master cylinder in vise.

Rock reservoir from side to side and remove from master cylinder housing (Fig. 4).

Do not pry off with tool, damage to reservoir may result.

Remove housing-to-reservoir grommets (Fig. 5). Install new housing-to-reservoir grommets in mas-

ter cylinder housing.

BRAKES 5 - 67

Fig. 4 Removing Reservoir

Lubricate reservoir mounting area with clean brake fluid. Place reservoir in position over grommets. Seat reservoir with a rocking motion onto master cylinder housing.

Fig. 5 Removing Grommets

Be sure reservoir is positioned properly. All lettering should be properly read from the left side of the master cylinder (Fig. 4).

Make sure bottom of reservoir touches top of grommet.

BLEEDING MASTER CYLINDER

Clamp the master cylinder in a vise. Attach Bleeding Tubes, Special Tool C-4546 to the master cylinder. Position tubes so the outlet of the Bleeding Tubes will be below the surface of the brake fluid when the reservoir is filled to the proper level.

Fill both reservoirs with brake fluid conforming to DOT 3 specifications such as Mopar or Equivalent.

Using a wooden dowel per (Fig. 6). Depress push rod slowly, and then allow pistons to return to released position. Repeat several times until all air bubbles are expelled (Fig. 6).