GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Chevrolet C-Series Medium Duty Truck B7 🢒 Brakes 🢒 Air Brakes 🢒 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 Draining Reservoirs .
  3. Remove the air lines from the quick release valve double check type. Refer to Hose and Line Replacement - Nylon and Metal Compression .
  4. Remove the following components:
    5. • The nuts
    • The washers
    • The bolts

    Object Number: 227931 Size: MH
  5. Remove the quick release valve double check type.
  6. Inspect the air lines for the following conditions:
    7. • Damage
    • Kinks
    • Wear
  7. Replace any damaged, kinked, or worn air lines.

Installation Procedure

    Object Number: 227931 Size: MH
  1. Install the quick release valve double check type.

    2. 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. Install the following components:
    3. • The bolts

    Tighten
    Tighten the quick release valve double check type bolts to 52 N·m (38 lb ft).

    • The washers
    • The nuts
  3. Install the air lines to the quick release valve double check type. Refer to Hose and Line Replacement - Nylon and Metal Compression .
  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.