(W/ JL4)

Brake Pressure Modulator Valve (BPMV) Replacement (W/ JL4)

Removal Procedure

Caution: Refer to Brake Fluid Irritant in Service Precautions.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components in Service Precautions.

Important: The area around the Electric Hydraulic Control Unit (EHCU) MUST be free from loose dirt to prevent contamination of disassembled ABS components.

1. Thoroughly wash all contaminants from around the EHCU.





2. Disconnect the electrical connector from the Electronic Brake Control Module (EBCM) (1).

Important: Make sure that brake lines are tagged and kept in order for proper reassembly.

3. Disconnect the brake lines from the Brake Pressure Modulator Valve (BPMV) (2).
4. Remove the bolts (4) securing the EHCU mounting bracket (3) to the frame rail (5).
5. Remove the EHCU from the vehicle.





6. Remove the bolts (4) securing the BPMV (3) to the EHCU mounting bracket (5).
7. Remove the bolts (1) from the EBCM (2).
8. Remove the EBCM (2) from the BPMV (3). Removal may require a light amount of force.

Important: Do not use a tool to pry the EBCM or the BPMV. Excessive force will damage the EBCM.

Important: Do not reuse the EBCM mounting bolts. Always install new bolts.

9. Clean the EBCM to BPMV mounting surfaces with a clean cloth.

Installation Procedure





Important: Do not use RTV or any other type of sealant on the EBCM gasket or mating surfaces.

1. Install the EBCM (2) onto BPMV (3).

Notice: Refer to Fastener Notice in Service Precautions.

Important: Do not reuse the old mounting bolts. Always install new EBCM bolts with the new BPMV.

2. Install the EBCM bolts (1).
Tighten the bolts to 5 Nm (39 inch lbs.) in an X-pattern.
3. Install the BPMV (3) to EHCU bracket (5).
4. Install the BPMV to bracket retaining bolts (4).
Tighten the bolts to 9 Nm (7 ft. lbs.).





5. Install the EHCU to the vehicle frame (5).
6. Install the EHCU bracket bolts.
Tighten the EHCU bracket baits (4) to 25 Nm (18 ft. lbs.).
7. Connect the electrical connectors to the EBCM (1).

Important: The brake pipes are held in place by a plastic bracket mounted to the frame. Make sure that the brake pipes stay in the correct place for proper reassembly.

8. Install the brake pipes to the BPMV (2).
Tighten the brake pipe fittings to 25 Nm (18 ft. lbs.).
9. Bleed the brake system using the ABS Automated Bleed Procedure (W/JL4). Refer to ABS Automated Bleed Procedure (W/O JL4) or ABS Automated Bleed Procedure (W/JL4).