BMW 5251 Service Manual page 269

--
Camshaft Timing Chain
-- -
Tightening torque
Vibration damper hub to crankshaft
410
Nm
(300
ft-lb)
4
Install cranltshaft hub and vibration damper while aligning
locating hole (arrow) in damper with dowel pin in hub.
Tightening torque
Vibration damper and pulley to
cranltshaft hub
22
Nm
(17
ft-lb)
-
Turn engine over by hand in direction of rotation at least two
full rotations. Reinstall camshaft and crankshaft locking toois
to recheck engine timing. Remove locking tools if no faults
are found.
-
Remove BMW special tool 11 3 390 (dummy tensioner) from
side of cyiinder head.
-
Install primary chain tensionerso that cutout in tensioner pis-
ton engages chain rail.
Tightening torque
Timing chain tensioner to tensioner sleeve
70
Nm
(52
ft-ib)
-
Install cylinder head cover mounting studs, camshaft cover,
and cylinder head cover.
Tightening torque
Cylinder head cover to cyiinder head
M6
nut
10
Nm
(89
in-lb)
MB
bolt
22
Nm
(17
ft-lb)
-
installation of remaining parts is reverse of removal, noting
the following:
When installing thermostat, make sure arrow or vent hole
faces up, if applicable.
Refill cooling system as described in 170 Radiator and
Cooling System.
Fill engine with oil and install new oil filter as described in
020 Maintenance.
Tightening torque
Upper timing chain cover to cylinder head
M6
nut
10
Nm
(89
in-lb)
MB
bolt
22
Nm
(17
ft-lb)
VANOS oil supply pipe to VANOS control
unit banjo bolt
32
Nm
(24
ft-ib)