Removing Camshaft Gears; Replacing Guide Rail; Replacing Chain Guides; Replacing Chain Tensioning Rail - BMW C1 Repair Manual

Removing camshaft gears

Replacing guide rail

•
Secure crankshaft at TDC.
•
Remove securing screws.
•
Remove guide rail.
L
Note:
Make sure that the timing chain does not drop into
the cavity. Use locking element to keep timing chain
tensioned at all times.
•
Remove chain tensioner.
•
Remove screws securing camshaft gears.
L
Note:
Use a marker to mark the TDC line on the inlet cam-
shaft gear.
•
Remove camshaft gears.
11.58

Replacing chain guides

11 31 112 Replacing guide rail
– Cylinder head cover removed.
– Chain tensioner removed.
C1110930
•
Lift guide rail up to remove.
•
When installing, seat rail in recess (arrow).

11 31 101 Replacing chain tensioning rail

– Remove freewheel gear.
•
Slacken collar screw.
•
Remove tensioning rail.
When installing:
•
Remove all traces of old thread-locking com-
pound from the threads.
•
Coat threads of collar screw with Loctite and in-
stall.
Operating fluids:
Collar screw .......................................LOCTITE 243
X
Tightening torque:
Collar screw ................................................. 10 Nm
C1110940
C1110950