vanos.pdf

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11 36 010
Removing and installing, sealing/replacing
VANOS adjustment unit (S50 B32)
Read fault memory and make a documentary record.
Remove cylinder head cover,
refer to 11 12 000.
Remove fan clutch with fan impeller and fan cowl,
refer to 11 52 020 / 17 11 031.
If necessary, replace filter screw on VANOS adjustment unit.
Tightening Torque,
refer to Technical Data 11 36 8AZ.
Removal
The removal of the VANOS adjustment unit is described
separately from the installation. Assembly sequence for remova
and installation is different.
When the engine is switched off, VANOS moves the camshafts
to a position which is advantageous to engine starting.
Caution!
The camshafts must be turned back to their initial position
before removing the VANOS adjustment unit.
RA Removing and installing, sealing/replacing VANOS adjustment unit (S50 B32)
Issue status (10/2000) Valid only until next CD is issued
BMW AG - TIS
Copyright
05.08.2008 23:07
Page - 1 -
Fit special tool 11 5 100 to four screws on crankshaft hub.
Rotate crankshaft in direction of rotation as far as ignition TDC
position of cylinder 1.
Note:
The TDC allocation above the marking is sufficient.
Do "not" fix vibration damper in position with special
tool 11 2 300.
The engine is cranked again later.
Remove cover from plug connectors.
Remove oil line from VANOS adjustment unit.
RA Removing and installing, sealing/replacing VANOS adjustment unit (S50 B32)
Issue status (10/2000) Valid only until next CD is issued
BMW AG - TIS
Copyright
05.08.2008 23:07
Page - 2 -
Fit special tool 11 7 350 to VANOS adjustment unit.
Connect up compressed air (2 ... 8 bar).
Disconnect plug connection on solenoid valves on exhaust side
Connect special tool 12 6 412 in combination with special
tool 12 6 411 (from special tool kit 12 6 410) to solenoid
valves on exhaust side.
Connect special tool 12 6 411 to correct terminals on car
battery.
Press toggle switch on special tool 12 6 412 in direction of
VANOS splined shaft and keep pressed.
At the same time, brace exhaust camshaft on hex head against
direction of rotation until groove in guide bearing is aligned with
groove on first bearing cover.
Note:
If necessary, press toggle switches on special
tool 12 6 412 several times in both directions until
camshaft starts to move.
Disconnect plug connection of solenoid valves on intake end.
Connect special tool 12 6 412 to the solenoid valves on the
intake end.
Press toggle switch on special tool 12 6 412 in direction of
VANOS splined shaft and hold down.
RA Removing and installing, sealing/replacing VANOS adjustment unit (S50 B32)
Issue status (10/2000) Valid only until next CD is issued
BMW AG - TIS
Copyright
05.08.2008 23:07
Page - 3 -
At the same time, rotate intake camshaft on hex head against
direction of rotation until groove on guide bearing is aligned with
groove of first bearing cover.
Note:
If necessary, press toggle switches on special
tool 12 6 412 several times in both directions until
camshaft starts to move.
Disconnect special tool 12 6 412 and special
tool 12 6 410 and remove.
Disconnect compressed air.
Remove special tool 11 7 350.
Unfasten cover for hydraulic piston on intake end.
RA Removing and installing, sealing/replacing VANOS adjustment unit (S50 B32)
Issue status (10/2000) Valid only until next CD is issued
BMW AG - TIS
Copyright
05.08.2008 23:07
Page - 4 -
Remove cover from hydraulic piston. Collar nut is accessible.
Caution!
Risk of damage to shaft.
Grip shaft with a hexagon socket. Release collar nut with a ring
wrench.
Note:
Only the use of an exactly fitting hexagon nut will prevent
the hexagon from being damaged and the shaft from being
bent.
Unfasten screws (1 ... 9) from VANOS adjustment unit.
Unscrew end cover (VANOS bridge) on timing case.
RA Removing and installing, sealing/replacing VANOS adjustment unit (S50 B32)
Issue status (10/2000) Valid only until next CD is issued
BMW AG - TIS
Copyright
05.08.2008 23:07
Page - 5 -

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