Removal & Installation
Any brake fluid that is removed from the system should be discarded. Never reuse brake fluid. Do not allow any brake fluid to come in contact with a painted surface; it will damage the paint.
- Turn ignition to the "OFF" position and disconnect the negative battery cable.
- Disconnect the electrical connector from the HECU.
Mark the brake lines going into and out of the HECU with tags so reinstallation of the brake lines will be correct.
NOTEBefore removing the brake lines from HECU, the HECU must be thoroughly cleaned to prevent dirt particles from falling into the ports of HECU or entering the brake lines.
Disconnect the brake lines from the HECU by loosening the nuts is a clockwise direction..
WARNINGTake care not to damage or deform the brake lines during removal and installation.
- To prevent the brake fluid from spilling, plug and cover the hose ends and joints with a shop towel or equivalent material.
Remove the three HECU assembly mounting bolts and remove the HECU with the bracket.
WARNINGNever attempt to disassemble the HECU. The HECU must be transported and stored in an upright position and with the ports sealed.
- Remove the three HECU bracket mounting bolts and separate the HECU from the bracket.
- Install the HECU mounting bracket and tighten the mounting bolts to 6 ft. lbs. (8 Nm).
- Install the HECU assembly and tighten the mounting bolts to 12-18 ft. lbs. ( 17-25 Nm).
- Attach brake lines to HECU, be careful to reattach the lines in the same positions which they were in prior to removal. Tighten each line to 11 ft. lbs. (16 Nm).
- Connect HECU the electrical connector.
- Connect the negative battery cable.
- Refill the brake system.
- Following proper procedures, bleed the brake system.
Road test vehicle to ensure proper operation of the base and ABS systems.