GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Brakes 🢒 Air Brakes 🢒 Air Brake Quick Release Valve Replacement

Removal Procedure
  1. Block the wheels.
  2. Drain all of the air reservoirs. Refer to Air Brake Reservoir Draining .
  3. Remove the air lines. Refer to Hose and Line Replacement - Nylon Push-In Type Fitting .
  4. Remove the following components:
    5. 4.1. The nuts
    4.2. The washers
    4.3. The bolts

    Object Number: 227929 Size: SH
  5. Remove the quick release valve from the bracket.
  6. Inspect the air lines for the following conditions:
    7. • Damage
    • Kinks
    • Wear
  7. Repair or replace any damaged, kinked, or worn air lines.

Installation Procedure

    Object Number: 227929 Size: SH
  1. Install the quick release valve to the bracket.
  2. Install the following components:
    3. 2.1. The bolts
    2.2. The washers

    Notice: Refer to Fastener Notice in the Preface section.

    2.3. The nuts

    Tighten
    Tighten the quick release valve nuts to 22 N·m (16 lb ft).

  3. Install the air lines. Refer to Hose and Line Replacement - Nylon Push-In Type Fitting .
  4. Perform the air leakage test. Refer to Air Brake Quick Release Valve Operational Check .
  5. Perform the operational test. Refer to Air Brake Quick Release Valve Leakage Test .
  6. Remove the wheels blocks.