HCU (Hydraulic Control Unit): Removal

Fig 1: Removing/Installing Hydraulic Lines

Courtesy of DAIMLERCHRYSLER CORP.

1. Clean off the top of the HCU, especially around the hydraulic lines (1-6). Be sure there is not any debris that could fall into the brake line holes.
   NOTE: To aid in reassembly, insure the hydraulic brake lines and corresponding connections at the HCU are clearly marked before disassembly.
2. Remove the hydraulic lines from the HCU. Seal off the hydraulic lines and connections with suitable plugs.
   • 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. Disconnect the hydraulic controller unit harness connector (1) from the CAB.
4. Remove the HCU upwards, by carefully pushing the hydraulic lines to one side and carefully pull up.