Master Cylinder

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There are 2 different master cylinders used on this vehicle. A center-port master cylinder is used on ABS and Traction Control vehicles. A conventional vent-port master cylinder is used on vehicles without ABS. Both master cylinders appear the same externally except for the size of their outlet ports. The ABS master cylinder has outlet ports differing in size; the primary port is machined to accept a 12-mm tube nut, while the secondary port is machined for a 10-mm tube nut. Both the primary and secondary ports on a non-ABS master cylinder are machined to accept 12-mm tube nuts.

The master cylinder is mounted to the face of the power brake booster on the left side of the dash. See Fig 1. It has the brake fluid reservoir mounted on top and the brake fluid level switch is mounted in the side of that reservoir.

Fig 1: Identifying Master Cylinder

Courtesy of CHRYSLER CORP.