GM Service Manual Online
For 1990-2009 cars only
Makes šŸ¢’ GMC_Truck šŸ¢’ 2005 šŸ¢’ TopKick C-Series (Crew) C4/C5 šŸ¢’ Brakes šŸ¢’ Air Brakes šŸ¢’ Rear Air Brake Quick Release Double Check Valve Replacement - Right Side

Removal Procedure
  1. Block the vehicle wheels.
  2. Drain all of the air reservoirs. Refer to Air Brake Reservoir Draining .
  3. Remove the air lines from the quick release valve, double check type. Refer to Hose and Line Replacement - Nylon Push-In Type Fitting .
  4. Remove the following components:
    5. ā€¢ The nuts
    ā€¢ The washers
    ā€¢ The bolts

    Object Number: 1488294 Size: SH
  5. Remove the quick release valve, double check type.
  6. Inspect the air lines for the following conditions:
    7. ā€¢ Damage
    ā€¢ Kinks
    ā€¢ Wear
  7. Replace any damaged, kinked, or worn air lines.

Installation Procedure

    Object Number: 1488294 Size: SH
  1. Install the quick release valve, double check type.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the following components:
    3. ā€¢ The bolts

    Tighten
    Tighten the quick release valve, double check type bolts to 25 NĀ·m (19 lb ft).

    ā€¢ The washers
    ā€¢ The nuts
  3. Install the air lines to the quick release valve, double check type. Refer to Hose and Line Replacement - Nylon Push-In Type Fitting .
  4. Perform the air leakage test. Refer to Rear Quick Release Double Check Valve Operational Check .
  5. Perform the operational test. Refer to Rear Quick Release Double Check Valve Leak Test .
  6. Remove the wheel blocks.