Solenoid valves, cylinders 1-6

Necessary preliminary tasks: 

• Read out fault memory in DME control unit
• Switch off ignition.
• Remove FAN COWL WITH ELECTRIC FAN .
• Remove VACUUM PUMP .
• Loosen expansion tank and carefully press to the side.

Bottom solenoid valve controls the inlet adjustment unit.

Unlock plug connections of solenoid valves (2 and 4) and disconnect.

Installation: 

Plug connections must snap audibly into place!

Fig 1: Identifying Solenoid Valve Plug Connection And Screws

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Unfasten screws (1 and 3).

Tightening torque: see 3AZ in 11 36 VARIABLE CAMSHAFT CONTROL

Pull out solenoid valves.

Installation: 

Replace O-rings (1 and 2) on solenoid valve  .

Installation: 

To install solenoid valves, coat both O-rings with engine oil.

If the solenoid valve is to be reused, the filter strainer (see arrow in illustration) must be cleaned.

Fig 2: Identifying Solenoid Valve O-Rings

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Release filter elements (1) at contact edges.

Fig 3: Identifying Filter Elements

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Bend open welding spots on filter element (1) with a screwdriver (2) in direction of arrow until welding spots are opened.

Fig 4: Bending Open Welding Spots On Filter Element Using Screwdriver

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Avoid damaging, e.g. notches or scratches, the solenoid valve housing (see arrows in illustration).

Fig 5: Locating Solenoid Valve Housing Surface

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Carefully insert solenoid valves as far as they will go.

Ensure correct installation position.

Insert screws (1 and 3) and tighten down.

Tightening torque: see 3AZ in 11 36 VARIABLE CAMSHAFT CONTROL

Fig 6: Identifying Solenoid Valve Plug Connection And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Delete fault memory.

Check function of DME control unit.