GM Service Manual Online
For 1990-2009 cars
Makes 🢒 Chevrolet 🢒 2004 🢒 C-Series Medium Duty Truck C6/7/8 - Mexico 🢒 Brakes 🢒 Air Brakes 🢒 Air Brake Quick Release Valve Replacement

Removal Procedure
  1. Block the wheels.
  2. Drain all of the air reservoirs. Refer to Draining Reservoirs .
  3. Remove the air lines. Refer to Hose and Line Replacement - Nylon and Metal Compression .
  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: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    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 and Metal Compression .
  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.