BMW 5251 Service Manual page 278

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Camshaft Timing Chain
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Using new gasket, install VANOS control unit to cylinde~
head.
Reinstall engine support eye.
Tightening torques
VANOS control unit to cylinder head
M6
nut
10 Nm (89 in-lb)
M7
nut 14 Nm (10 ft-ib)
4
Insert and tighten VANOS hydraulic piston set screws on
intake and exhaust camshafts.
CAUTIOI\C
Set screws have left hand thread Tighten counterclocltwise.
Tightening torque
Hydraulic piston
to
splined shaft 10 Nm (89 in-lb)
(set screw)
4
Replace sealing caps inside VANOS control unit with BMW
special tool 11 6 170, or short flat nosed pliers.
Insert and secure VANOS sealing plugs (arrows), using new
sealing O-rings.
Tightening torque
Sealing plug to VANOS control unit 50 Nm (37 it-lb)
Remove compressed air fitting from VANOS control unit
Fit VANOS oil line banjo bolt with new seals. Attach oil line to
VANOS control unit.
Tightening torque
Oil line to VANOS control unit (banjo bolt) 32 Nm (24 it-lb)
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