Z Series E85 M roadst (S54) ROADST
Important!
CCW thread!
Grip on dihedron (1) and screw in at hexagon (2).
Grip on dihedron (1) and screw together at hexagon (2)
alternately between exhaust and inlet sides in 1/2 turn
increments.
Secure union nut (2) with special tool 11 7 200 .
Tightening torque 10 Nm .
Align radial piston pump to driver on spline hub.
Note:
Picture shows a schematic representation.
Press buttons 1 and 3 on special tool
12 6 050
simultaneously. The solenoid valves are activated and the air can
escape from the hydraulic pistons of the VANOS adjustment unit.
Simultaneously push on VANOS adjustment unit until it rests on
special tool 11 9 170 .
Important!
If this position is not reached, check position of radial piston
pump to driver and realign if necessary.
Remove two M6x60 bolts.
Remove special tool 11 9 170 .
Insert original bolts.
Important!
When the left and right screws are tightened down alternately,
the exhaust and inlet camshafts must not rotate.
If the camshafts do rotate, this means that the screws on the
VANOS gear were not previously released correctly.
Alternately tighten down bolts in 1/2 turn increments carefully and
evenly until VANOS adjustment unit rests against timing case
cover.
RA Adjusting camshaft timing (S54)
BMW AG - TIS
06.02.2013 20:59
Issue status (12/2007) Valid only until next DVD is issued
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