BMW E39 M5 (S62) VANOS and timing end: service and parts
Which parts are replaced in an E39 M5 VANOS service?
Replace the solenoid O-rings (11367830828 and 11367830829, 8 of each) and the cover gaskets. In addition the diaphragm rings 11367833218 (4 pcs) and the lock ring 07119934749 (2 pcs). The hydraulic chain tensioner can be replaced at the same time.
How are the VANOS solenoids tested?
The solenoids can be tested one at a time with a 9 V battery. Cold solder joints on the solenoid board are a common cause of faults. Make sure the board does not end up crooked during installation, because a crooked board gives fault codes.
When should the condition of the S62 timing end be checked?
The interval varies: VANOS service has been considered due at about 140 000 km, and the condition of the timing end should be checked at the latest at about 200 000 km. Wear of the chain guide coating and aluminium dust in the bearings indicate that the bearings need replacing.