bpr Rotax 912 i Series, Руководство по обслуживанию, Страница: 198 / 458

Effectivity: 912 i Series
Edition 1/Rev. 0
d0
534
5.
fm
MAINTENANCE MANUAL
BRP-Powertrain
72-30-00
Page 16
July 01/2012
Fig. 26
NOTE:
Oversized rocker arm shafts and ro-
cker arm bushings are available to
provide the option of repairing the ro-
cker arm bearing in the cylinder head.
Fig. 27
ROCKER ARM BUSHING
With the rocker arm bushings (plastic bushing),
ensure that the plastic bushing is a sliding seat.
This can rotate relative to the rocker arm bore
after installation too. The rocker arm bushing is
therefore provided with an outer circular groove
to allow oil supply. The rocker arm bushing can
be installed independently of position.
NOTE:
Oversized rocker arm shafts and ro-
cker arm bushings are available to
provide the option of repairing the ro-
cker arm bearing in the cylinder head.
In this case ensure that the correct ro-
cker arm bushing is installed. The
oversized rocker arm bushing part no.
933397 has two mutually opposite
bores for identification and differenti-
ation.
Fig. 28
1. Push-rod 2. Ball joint
3. Rocker arm bushing 4. Oil ducts
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.
m
WARNUNG
NOTICE
If excessive wear is visible in the rocker arm
bearing, this indicates a lack of oil. The support
surface for the valve stem can be post-machi-
ned a little.
dim.
06454
1
3
4
2
1. Rocker arm 2. Rocker arm shaft
3. Valve guide 4. Ball joint
1. Rocker arm bushing 2. Groove