Camshaft Timing Chains, Installing - BMW 1999-2005 M3 Service Manual

Camshaft Timing Chain
1 of 11
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Camshaft timing chains,
Installing
CAUTION!
The procedure outlined below
assumes that the camshafts and the
crankshaft are locked in the TDC
installation position with special
locking tools as shown earlier.
Inspect timing chain sprockets. Inspect
guide rail and tensioner rail for deep
grooves caused by chain contact.
Replace any part that is worn or
damaged.
1 - Primary chain tensioner
2 - Chain tensioner rail
3 - Crankshaft sprocket
4 - Exhaust camshaft sprocket
5 - Primary chain
6 - Anchor bolt
7 - Guide rail
8 - Anchor bolt
9 - Woodruff key
Note:
If any sprockets are being replaced due
to wear, the chain should also be
replaced. If the crankshaft sprocket
requires replacement, the oil pump
drive sprocket and chain must be
removed. See
System for oil pump removal
information.
- Install primary timing chain to
crankshaft sprocket and hang
117-4
119 Lubrication
2/25/2009 9:51 PM