HCU (Hydraulic Control Unit): Installation

Fig 1: Removing/Installing Hydraulic Lines

Courtesy of DAIMLERCHRYSLER CORP.

1. Inspect the seating and condition of the rubber grommets and replace if necessary.
   CAUTION: Use caution when re-connecting hydraulic lines. Refer to markings for proper installation. If necessary, trace the line routing to the corresponding wheel.
2. Install the brake lines (1-6). Pay very close attention to the locations when installing the hydraulic lines. DO NOT  cross thread.
   • Right rear wheel (1)
   • Master cylinder front (2)
   • Right front wheel (3)
   • Left front wheel (4)
   • Left rear wheel (5)
   • Master cylinder rear (6)
   Fig 2: Disconnecting/Connecting Hydraulic Controller Unit Harness Connector

   Courtesy of DAIMLERCHRYSLER CORP.
3. Connect the hydraulic control unit harness connector (1) to the CAB.
4. Bleed the brake system. (Refer to BRAKES - STANDARD PROCEDURE) .
5. Connect the DRB III(R) and read any DTCs, then clear any applicable codes.