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Integrated Control Unit - MK25E: Assembly

  1. Clean any debris off the mating surfaces of the HCU and ABM.
    CAUTION: When installing new O-rings or solenoid valve stem seals, do not use any type of lubricant.
    Fig 1: Solenoid Valve Seal
    GC0039495Courtesy of DAIMLERCHRYSLER CORP.
  2. If the seals (1) on the solenoid valve stems (2) are not new, replace them all. Each of the solenoid valve stem seals must be new to keep out moisture and debris; do not reuse solenoid valve stem seals  .
    Fig 2: Replacing Pump/Motor Connector O-Ring
    GC0039496Courtesy of DAIMLERCHRYSLER CORP.
  3. Replace the pump/motor connector O-ring (1) if it is not new. Be sure the O-ring is properly seated in the mounting groove (2).
    Fig 3: Separation/Installation of ABM & HCU
    GC0039494Courtesy of DAIMLERCHRYSLER CORP.
  4. Align components and install the ABM (1) on the HCU (2).
    Fig 4: Removing/Installing ABM Mounting Screws
    GC0039493Courtesy of DAIMLERCHRYSLER CORP.
  5. Install the four screws (1) attaching the ABM (2) to the HCU. Tighten the mounting screws to 2 N.m (17 in. lbs.).
  6. Attach the mounting bracket to the HCU. Install two mounting bracket attaching screws and tighten to 11 N.m (97 in. lbs.).
  7. Install the ICU in the vehicle. (Refer to BRAKES/HYDRAULIC/MECHANICAL/ICU (INTEGRATED CONTROL UNIT) - INSTALLATION )
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