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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 770 (General Hydraulic Brake System) >> Repair Instructions >> Combination Valve Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Important:  Verify that the replacement combination valve has the same pin punched identification code as the code on the old combination valve.

  1. Install the combination valve to the vehicle.
  2. Install the front and the rear brake pipes to the combination valve. Tighten the brake pipe nuts to 30 N.m (22 lb ft).
  3. Connect the combination valve electrical connector.
  4. Install the Master Cylinder. Refer to Master Cylinder Replacement .

    Important:  Verify that the combination valve metering B rod is depressed during bleeding.

  5. Bleed the brake system. Refer to Hydraulic Brake System Bleeding (Manual)  or Hydraulic Brake System Bleeding (Pressure)  .
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