Camshaft And Lifter. Removal And Installation (M52 Tu And M54 Engine) - BMW 5251 Service Manual

Cylinder Head and valvetrain1
-
Remainder of installation is reverse of removal, noting the
following:
See 117 Camshaft Timing Chain for VANOS control unit
installation.
Tightening torques
Camshaft bearing caps
to
cylinder head (M7) 15 Nm
(1 1 ft-lb)
Cylinder head cover
to
cylinder head (M6)
10
Nm
(89
in-lb)
Sparic plugs (M12)
23 Nm (17 ft-lb)
Camshaft and lifter, removal and
installation (M52 TU and M54 engine)
Camshafts and lifters, removing
(M52
TU and M54 engine)
WARNING-
Allow engine fo cool before beginning this procedure.
-
Disconnect negative (-) cable from battery.
CAUTION--
Prior to disconnecting the battea read the battery discon-
nection cautions in 001 General Cautions and Warnings.
Remove VANOS control unit. See 117 Camshaii Timing
Chain.
Remove primary timing chain tensioner (arrow).
CAUTION-
Primary timing chain tensioner is under spring pressure.
1