Caution: Refer to Brake Fluid Irritant Caution in the Preface section.
Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.
Caution: For safety reasons, the brake pressure modulator valve assembly must not be repaired, the complete unit must be replaced. With the exception of the EBCM, no screws on the brake pressure modulator valve assembly may be loosened. If screws are loosened, it will not be possible to get the brake circuits leak-tight and personal injury may result.
Important: The area around the electronic brake control module (EBCM)/ brake pressure modulator valve (BPMV) must be free from loose dirt to prevent contamination of disassembled antilock brake system (ABS) components.
Notice: To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.
Caution: Brake fluid may irritate eyes and skin. In case of contact, take the
following actions:
• Eye contact--rinse thoroughly with water. • Skin contact--wash with soap and water. • If ingested--consult a physician immediately.
Notice: When removing the brake pressure modulator valve, protect the vehicle exterior from possible brake fluid spillage. Brake fluid can cause damage to painted surfaces.
Notice: Excessive bending of brake pipes during BPMV removal or installation may cause permanent damage that will require replacement.
Important: Record the location of all brake pipes to the BPMV for use as an aid during installation.
Important: The EBCM cannot be repaired. If faulty, the unit must be replaced.
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.
Tighten
Tighten the 6 screws to 3.2 N·m
(28 lb in).
Important: Make sure that all 3 rubber isolators are installed on the BPMV. The isolators protect the EBCM/BPMV assembly from vehicle vibrations.
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.
Tighten
Tighten the 2 nuts to 10 N·m
(89 lb in).
Caution: The brake pipes must be fully installed to the brake pipe mounting retainers on the frame. Failure to properly retain the brake pipes may cause the pipes to contact the frame and/or the transmission resulting in possible loss of brake fluid and personal injury.
Caution: Make sure brake pipes are correctly connected to BPMV. If brake pipes are switched by mistake Inlet vs. Outlet, wheel lockup will occur and personal injury may result.
Important: If a new BPMV is being installed, remove the shipping plugs from the valve openings.
Tighten
Tighten the 4 brake pipes to 15 N·m
(11 lb ft).
Tighten
Tighten the 2 brake pipes to 15 N·m
(11 lb ft).
Notice: To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.