Integrated Control Unit: Assembly

-- 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.

1 - Seal.
2 - Solenoid valve stem.

-- 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 1: Identifying Solenoid Valve Stem And Seal

GWWUS20677

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1 - O-ring.
2 - O-ring mounting groove.

Fig 2: Identifying O-Ring And Mounting Groove

GWWUS20679

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- 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).

1 - ABM.
2 - HCU.
3 - Solenoid valve stem.

-- Align components and install the ABM (1) on the HCU (2).

Fig 3: Identifying ABM, HCU And Solenoid Valve Stems

GWWUS26589

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1 - Mounting screws.
2 - ABM.

-- Install the four screws (1) attaching the ABM (2) to the HCU. Tighten the mounting screws to 2 Nm (17 in. lbs.).

Fig 4: Identifying ABM Mounting Screws

GWWUS26587

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- If necessary, install the mounting pins (1) in the ICU (2) and tighten to 11 Nm (97 in. lbs.).

Fig 5: Identifying Integrated Control Unit And Mounting Pins

GWWUS58275

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Install the ICU in the vehicle. Refer to INTEGRATED CONTROL UNIT .