11 36 655 Removing and installing/replacing both solenoid valves (N54)

IMPORTANT: Always check that the solenoid valves are clean during removal and installation.
Possible malfunctions if valves are contaminated:

IMPORTANT: Risk of damage!
Do not clean solenoid valves with compressed air.

Necessary preliminary tasks:

NOTE: Carefully press coolant hose and pressure line (not shown) to one side.

Fig 1: Identifying Solenoid Valve And Plug Connections

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NOTE: Solenoid valve (2) controls the inlet adjustment unit.
Solenoid valve (3) controls the exhaust adjustment unit.

Remove plug connections (1 and 4).

Installation:

Do not mix up plug connections (1 and 4) of solenoid valves.

Plug connections (1 and 4) must snap audibly into place!

Unfasten screws (3 and 4).

Tightening torque 11 36 3AZ .

Carefully pull out solenoid valves (1 and 2).

Fig 2: Identifying Solenoid Valves And Screws

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Installation:

Replace sealing ring (1) on solenoid valve (2).

NOTE: Moisten sealing ring (1) with engine oil.

Fig 3: Identifying Sealing Ring On Solenoid Valve

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Avoid damaging, e.g. notches or scratches, the solenoid valve (2).

IMPORTANT: Risk of damage!
Do not tilt solenoid valves (1 and 2) when inserting into cylinder head.

Fig 4: Identifying Solenoid Valves And Screws

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Carefully insert solenoid valves (1 and 2) up to stop.

Ensure correct installation position.

Insert screws (3 and 4) and tighten down.

Tightening torque 11 36 3AZ .

Assemble engine.

Now clear the fault memory.

Check function of DME control unit.