20
SSP217_023
Engine - Mechanics
Roller rocker
Exhaust valve
Every valve has a hydraulic valve lifter which
is integrated in the rocker. The rockers are
supported by a spindle shaft which is also
used to supply oil to the bearings and the
hydraulic valve lifters.
The two exhaust valves are actuated by a twin
roller rocker.
The single cam actuates the rocker by means
of a roller located between the rocker arms.
SSP217_022
Spindle shaft,
also used to
supply oil
Exhaust valve
20.2˚
Roller located between
rocker arms
Twin
roller rocker
Single cam
Oil spray hole
The individual hydraulic valve lifters
can be replaced without the rockers
needing to be removed.
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