BMW 5251 Service Manual page 251

Camshaft Timina chain1
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Remove viscous clutch cooling fan. See 170 Radiator and
Cooling System.
CA UTlOEIC
The radiator cooling fan nut (32mm wrench) has left- hand
threads.
.
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Remove engine trim covers:
Pry out plastic trim caps (arrows).
.
Remove cover fasteners and covers.
4
Remove ignition coils:
0
Disconnect ignition coil electrical harness connectors
Remove coil mounting fasteners and remove coils.
Remove spark plugs.
NOTE-
Make note of ignition coil ground strap locations.
Disconnect VANOS electrical harness connector (A) and oil
line fitting (B) from VANOS control unit.
NOTE-
Wrap the VANOS oil line fitting with a shop rag to absorb
leaking oil.
-
Disconnect cranltcase breather by squeezing at arrows,
-
Remove cylinder cover mounting fasteners and remove
cylinder head cover.
NOTE-
The cylinder head cover mounting bolt insulators and gas.
kets should be reinstalled in their original positions. Make
note of their arrangement during removal.