Rotax MMH-912 Series Maintenance Manual page 112

Effectivity 912/914 Series
Edition 1 / Rev. 3
BRP-Powertrain
Maintenance Manual
Treatment of corrosion damage and surface damage to the propel-
ler flange
The flange of the propeller shaft is subject to corrosion. After wrapping
the propeller shaft (2) in plastic tape or covering it with plastic tubing,
the propeller flange can be treated with an abrasive.
■ CAUTION: Before applying the protective coating, carefully cover
the flange face (3), the attachment bores and the
propeller shaft in this area (2).
To prevent corrosion damage, the back of the propeller flange should
be coated with a corrosioninhibiting agent.
Where there is greater corrosion damage and the material has been
affected, the propeller shaft must be replaced.
When carrying out any of these steps, the manufacturers instructions must
be observed.
— The ball bearing (6) must be an interference fit on its outer race in
the gearbox housing and on its inner race on the propeller shaft.
Check groove (7) for the retaining rings and the gear-tooth system
(8) for wear or damage.
On configuration 3, the inner diameter (9) of the propeller shaft must
be checked in the area of the oil inlet flange (10), dimension (GB05/
GB06). See 72-00-00 sec. 4.
◆ NOTE: The dimension GB05 or GB06 by itself is not as important
as the radial clearance between GB05/GB06.
Inspect the propeller shaft for cracks. See 00-00-00 sec.10.4.
Register the results of the magnetic particle inspection in the
respective form sheet. See 72-00-00 sec. 5.
Fig. 72-39
8
configuration 3
Ausführung 3
07454
1
9
7
10
72-00-00
page 40
October 01/2010