Rocker Arm Check And Rocker Arm Shaft Check - Rotax 915 i A series Maintenance Manual

Figure 8.27: Typical
Measurement region
1
NOTE
The valve spring support can be used as an in-
dicator of a malfunction of the valve drive relat-
ing to poorly or insufficiently purged hydraulic
valve tappets. In normal conditions, no measur-
able wear can be seen even after a relatively
long operating time.
Figure 8.28
72–30–00
Page 20
August 01 2018
BRP-Rotax
MAINTENANCE MANUAL HEAVY
ROCKER ARM CHECK AND ROCKER
ARM SHAFT CHECK
System description
The rocker arm bearing is lubricated by the hollow
drilled push-rod of the ball joint socket. The rocker
arm bearing is supplied with oil via the oil ducts in the
rocker arm. The oil exits and thus lubricates the rest
of the valve mechanism via the bore. The rocker
arms for the inlet and outlet are different.
3
Figure 8.29
1 Push-rod
Rocker arm bushing
3
Step Procedure
1 Check the surface of the rocker arm shaft
and the inner diameter of the rocker arm
bushing for traces of wear.
2 Check the valve support surface and ball
joint of the rocker arm.
4
1
06454
Ball joint
2
4
Oil ducts
Effectivity: 915 i A Series
Edition 0/Rev. 0
2