Audi V8 Service page 21

Inlet valve
Triple roller rocker
The three inlet valves are actuated via a triple
roller rocker.
A double cam actuates the rocker by means
of two rollers between the rocker arms.
Tolerance compensation for inlet
triple RR (roller rocker)
To ensure uniform compression
between the two cams and rollers
of the roller rockers, the spindle
shaft of the inlet roller rocker is
convex in shape in order to
compensate alignment and
component tolerances. This
prevents the roller rockers from
"tilting".
For the sake of clarity, the
tolerance of the spindle shaft
relative to the camshaft has
been greatly exaggerated in
the illustration.
Hydraulic valve lifter
with slide pad (hydraulic
valve tappet)
Spindle shaft
SSP217_025
Inlet valve 2
14.9˚
Cylinder head
Spindle shaft
axis (target)
Double cam
Oil duct
Cams
Rollers
Inlet valve 1 and 3
o
21.6
SSP217_024
Camshaft axis
Spindle shaft
axis (actual)
SSP217_021
21