Brake Pipe Replacement

Brake Pipe Replacement

Removal Procedure

Caution: Always use double-walled steel brake pipe when replacing brake pipes. The use of any other pipe is not recommended and may cause brake system failure. Carefully route and retain replacement brake pipes. Always use the correct fasteners and in the original location for replacement brake pipes. Failure to properly route and retain brake pipes may cause damage to the brake pipes and brake system resulting in personal injury.

Important: Brake pipes that run parallel to each other must maintain a 6 mm (1/4 inch) clearance.

1. Disconnect the brake pipe fittings.
2. Remove the brake pipe fasteners from the vehicle.
3. Remove the brake pipe from the vehicle.

Installation Procedure
1. Bend the brake pipe to achieve proper fit.
2. Install the brake pipe to the vehicle. Maintain a clearance of 19 mm (3/4 inch) for all moving or vibrating components.
3. Install the brake pipe fasteners to the vehicle.

Notice: Refer to Fastener Notice in Service Precautions.

4. Connect the brake pipe fittings.
^ Tighten the brake pipe fittings to the BPMV or the wheel jounce hoses to 20 Nm (15 ft. lbs.).
^ Tighten the brake pipe fittings to the master cylinder to 30 Nm (22 ft. lbs.).

5. Bleed the brake hydraulic system. Refer to one of the following procedures:
^ If the brake pipe that was replaced was between the master cylinder and the BPMV, refer to ABS Automated Bleed Procedure.
^ If the brake pipe that was replaced was between the BPMV and the wheel jounce hoses, refer to Hydraulic Brake System Bleeding (Manual) or Hydraulic Brake System Bleeding (Pressure).