Rotax 912 i Series Maintenance Manual page 99

SYSTEM DESCRIPTION
For operation with a hydraulic constant-speed
propeller on version 3 of the 912 i Series engine,
a hydraulic governor can be attached to control
the propeller. Version 2 can be retrofitted for this
purpose,
i.e. the drive for the governor in the propeller
gearbox and crankcase, its connection cable
and the oil feed line to the propeller shaft should
be retrofitted.
- For version 912 i -2, the hollow propeller shaft
should also be replaced.
Gear ratio (i)
Crankshaft: Propeller shaft
Propeller shaft: Governor
Total
SAFETY INFORMATION
WARNUNG WARNING
Follow the general safety instructions during all
work on the engine and the assemblies around
it.
MAINTENANCE
As well as the maintenance and special checks,
see the relevant Maintenance Manual Line for
the respective 912 i Series engine type.
REMOVAL
GOVERNOR - REMOVAL
Preparation
- General visual inspection. See relevant Main-
tenance Manual Line for the 912 i Series
engine type.
Effectivity: 912 i Series
Edition 1/Rev. 0
BRP-Powertrain
MAINTENANCE MANUAL
- Carry out engine test run to check proper
912 i
51: 21 2.429
22: 29 0.759
1.842
Fig. 1
functioning of the governor. See section 71-
00-00.
!
NOTICE
WARNUNG
Follow the governor manufacturer's instructions
for maintenance, inspection and repair.
NOTICE
WARNUNG
If these checks are omitted, it may be necessary
to dismantle the governor again to rectify any
faults after it has been repaired.
Step
1 Loosen the Allen screws on the governor
and remove the governor along with the
gasket.
NOTE: Various screws and nuts are re-
quired, depending on the manu-
facturer of the governor. See the
current edition of SB-912-052 "In-
stallation/use of governors".
1. Gasket
3. A8 lock washer
Procedure
2. Governor
4. M8 hex. nut
61-20-00
Page 5
July 01/2012