Solenoid valves, cylinders 5-8
Necessary preliminary tasks:
- Read out fault memory in DME control unit
- Switch off ignition
- Unlock hose on tank venting valve and disconnect
- Remove left intercooler . See 17 51 001 REMOVING AND INSTALLING/REPLACING LEFT INTERCOOLER (N63) or 17 51 001 REMOVING AND INSTALLING/REPLACING RIGHT INTERCOOLER (N63) .
- Carefully press pipe to one side
Solenoid valve (4) controls the exhaust adjustment unit.
Unlock plug connections of solenoid valves (2 and 4) and disconnect.
Installation:
Plug connections must snap audibly into place!
Unfasten screws (1 and 3).
Tightening torque 11 36 3AZ, see 11 36 VARIABLE CAMSHAFT CONTROL
Pull out solenoid valves (2 and 4).
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) must be cleaned.
If a filter element is clogged with dirt, the filter element (filter strainer) may be removed.
Release filter elements (1) at contact edges.
Bend open welding spots on filter element (1) with a screwdriver (2) in direction of arrow until welding spots are opened.
Avoid damaging, e.g. notches or scratches, the solenoid valve housing (see arrows).
Carefully insert solenoid valves (2 and 4) up to stop.
Ensure correct installation position.
Insert screws (1 and 3) and tighten down.
Tightening torque 11 36 3AZ, see 11 36 VARIABLE CAMSHAFT CONTROL
Assemble engine.
Now clear the fault memory.
Check function of DME control unit.