S5 Workshop Manual Engine
Limiting Value
Air intake : 34.993 mm
Air exhaust : 34.704 mm
3. Installation
1) Install camshaft onto cylinder head, but do not install rocker arm.
Notes:
■ Apply oil onto the journal and cam of
camshaft.
■ There is a cutting groove at the back of
exhaust camshaft to install camshaft
position sensor signal wheel.
2) Install bearing cover.
Marks on the cover are to identify air
intake / air exhaust.
I: Air intake camshaft
E: Air exhaust camshaft
3) Inspect camshaft to make sure it can be
rotated easily with hands. After
inspection, dismantle bearing cover and
camshaft, and then install rocker arm.
4) Make sure that the positioning pins at
the end of camshaft chain wheel are
located on the top.
Installing port of
signal wheel
Intake, exhaust
identification numbers
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