15) Propeller Gearbox Installation - Rotax 912 Series Maintenance Manual

14.4.15) Propeller gearbox installation

Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II
See fig. 158, 159 and 202.
Check the crankshaft Q on power takeoff side for out-of-roundness, see
dim. u in para 15. Slide drive gear W onto crankshaft E. Fit friction washer
T VS 30 and hex. nut R M30x1,5 secured with LOCTITE
to 200 Nm (1770 in.lb).
CAUTION: Dog gear and drive gear are paired and marked with a
continuous serial number Y and must not be exchanged
individually.
Verify alignment of crankshaft see fig. 202 and dim. G in
:
NOTE
para 15. Before rotating the crankshft remove one spark
plug per cylinder. At excessive out of roundness, re-
move hex nut R M30x1,5 and check again. If not out of
tolerance replace hex nut R M30x1,5 and friction washer
T VS30.
5
I
4
1
6
Clean the sealing surfaces of gearbox and and crankcase. Insert both
dowels R 6x20 into crankcase. Lubricate oil seal 30x52x7 (sealing lip) for
propeller shaft in crankcase and bearing bore for propeller shaft with motor
oil.
: There is no oil seal fitted on types 912 configuration 3 and
NOTE
912 configuration 4!
Keep the rollers of the roller bearing in position with multi-purpose grease
LZ to facilitate assembly of propeller shaft.
Position gear cover with completely pre-assembled gear unit, previously
coated on sealing surface with sealing compound LOCTITE
propeller shaft or the drive sleeve must be turned slightly to allow engage-
ment of the drive gear. By gently tapping on the gear cover with a plastic
mallet (not on propeller shaft) the gearbox is fitted on crankcase.
2
3
fig. 158
00275
®
221. Torque
fig. 202
01374
® 574.The
page 101
Initial issue, Jan. 01/2002