BMW 1999-2005 M3 Service Manual page 248

Camshaft Timing Chain
2 of 11
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upper end from exhaust camshaft.
If necessary, replace crankshaft
-
seal as described earlier.
To install lower timing case cover:
-
Clean cover and cylinder block
sealing surfaces.
Use new gaskets and coolant pipe
O-ring.
Drive timing cover dowels in until
they just protrude slightly from
sealing surface.
Apply a small bead of silicon
sealer (3-Bond 1209® or
equivalent) to corners of cylinder
head where timing cover meets
cylinder head and engine block.
Tap cover into position to engage
dowels.
Install all bolts hand tight,
including two Torx bolts from
above.
Install secondary chain lower
guide.
Drive dowels in flush to front of
cover.
Tighten cover mounting bolts
alternately and in stages.
Tightening torques
2/25/2009 9:51 PM