BMW 5251 Service Manual page 276

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Camshaft Timing Chain
-
4
Secure camshafts in TDC position using BMW special tool
set 11
3 240.
-
Disconnect compressed air line, leaving compressed air fit-
ting attached to VANOS control unit.
NOTE
-
Oil will drain from pressure line. Have a container and rags
ready
4
Unscrew sealing plugs from VANOS control unit
(arrows).
NOTE-
Oil will drain from sealing plug bores. Have a container and
rags ready
4
Pull sealing caps straight out of VANOS control unit with
BMW special tool
11
6 170, or with short nose pliers.
NOTE-
Additional oil may drain from VANOS control unit.
4
Remove set screws (left-hand thread) on ends of intake and
exhaust camshafts.
NOTE-
Set screws have left hand threads. Remove with a clockwise
motion.