Variable Valve Timing Solenoid: Service and Repair

WM 155519 Removing and installing solenoid hydraulic valve for valve lift adjustment

Tools





Technical values






Preliminary work

1. Remove rear wheel.
Socket-wrench insert P300 should be used to avoid damaging the rims.
=> 44051900 Removing and installing wheel.
2. Remove rear silencer.
=> 263319 Removing and installing rear silencer.
3. Remove upper part of heat shield.
=> 261219 Removing and installing heat shield.

Removal

Removing valve (for valve lift adjustment)

CAUTION

Ingress of dirt

- Danger of material damage due to blocked oil bores/oil ducts.

-> Absolute cleanliness is essential when working on the engine.
-> Lay removed engine parts on a clean base and make sure to cover them.
-> Use the cover for dust protection when fitting the engine NR.165 on the engine assembly support.

1. Pull off cable plug -1- by pressing the spring clamp.





Valve for valve lift adjustment, side 1-3









Valve for valve lift adjustment, side 4-6





1.1. Unscrew two Torx screws (M5 x 12) -2-.





Screws securing valve for valve lift adjustment

2. Pull valve -1- out of the cylinder head.





Valve in cylinder head

3. Replace O-ring -2- and grease with Kluber Syntheso Glep (Part No. 000.043.204.68).





Valve for valve lift adjustment

Installation

Installing valve (for valve lift adjustment)

Information

- The solenoid hydraulic valve for valve lift adjustment can be fitted on either cylinder bank.

Installation position:





Installation position of valve for valve lift adjustment in cylinder head





1. Fit valve with new O-ring at the correct position in the cylinder head.
2. Fit two Torx screws (M5 x 12) and tighten to the prescribed tightening torque.





Screws securing valve for valve lift adjustment

=> Tightening torque: 8 Nm (6 ftlb.)
3. Connect cable plug.

Subsequent work

1. Install upper part of heat shield.
=> 261219 Removing and installing heat shield.
2. Install rear silencer.
=> 263319 Removing and installing rear silencer.
3. Mount rear wheel.
Socket-wrench insert P300 should be used to avoid damaging the rims.
=> 44051900 Removing and installing wheel.