17
S341_028
Inlet roller rocker finger
tolerance compensation
Minor alignment and component tolerances may
occur between the inlet camshaft cams and the
roller rocker finger rollers.
To guarantee even pressure between the
components, the inlet roller rocker finger axle
shaft is of a convex design.
This prevents the roller rocker fingers
from canting.
The axle shaft's tolerance versus the camshaft is shown in grossly exaggerated form to depict it
more clearly.
Inlet camshaft
Camshaft axis
Shaft axis (actual)
Shaft axis (nominal)
Axle shaft for
roller rocker fingers
Roller rocker fingers
Rollers
The roller rocker fingers are mounted on an axle shaft. The axle shaft is used to simultaneously supply the bearings
and the hydraulic valve clearance compensation elements with oil.
- The hydraulic valve clearance compensation elements are located directly in the lever arm above the valves.
- The rollers are each seated between the lever arms.
Roller seated between
the lever arms
Exhaust valves 1 and 2
Oil spray bore
Exhaust valves
Inlet valves
Axle shaft with
oil supply
Oil duct
Twin roller rocker finger
Single cam
Double cam
Hydraulic valve clearance
compensation element
Triple roller rocker finger
Inlet valves 1 and 3
Inlet valve 2
S341_032
S341_030
