Camshaft Andlifter Removal And Installation - BMW 5251 Service Manual

116-12
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Cylinder Head and Valvetrain
Camshaft and lifter removal and installation
(M52 engine)
Camshafts and lifters, removing
(M52
engine)
WARNING
-
The process of evenly loosening the camshaft bearing cap
nuts is NOT an acceptable method of removing the cam-
shafts. Special tools should always be used to remove the
camshafts. Be sure to read the procedure tlirough before
starting a job.
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Allow engine to cool before beginning this procedure.
/
-
Disconnect negative (-) cable from battery.
CAUTION-
Prior to disconnecting the batfew read the battery discon-
nection cautions given in 001 General Cautions and
Warnings.
-
Remove VANOS control unit from cylinder head. See 117
Camshaft Timing Chain.
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4
Remove loosened bolts (arrows) from front of exhaust
sprocket
nuts (arrows) from intake camshaft