BMW 5251 Service Manual page 299

Camshaft Timing chain1
4
lnstall spring plate
(A)
to exhaust camshaft. Make sure that
F mark is visible.
NOTE-
If F mark is no longer visible, install spring plate as shown
Install exhaust camshaft impulse wheel, aligning mark (B)
with top edge of cylinder head (A). Install mounting nuts (ar-
r o w s )
finger tight.
4
Pull out exhaust splined shaft until it stops
-
Press down on secondary chain tensioner and remove ten-
sioner lock-down tool.