Rotax 912 Series Maintenance Manual page 102

Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II
NOTE: If at a gap of approx. 10 mm (.4 in.) (gear cover to
crankcase) resistance, is felt the rollers must be better
aligned.The drive sleeve must be turned slightly to allow
engagement of the drive gear in the vacuum pump gear.
CAUTION: If excessive force is applied at assembly, the roller
bearing or the drive for vacuum pump or hydraulic
governor can be damaged. If oil gets on the sealing
surface due to difficult assembly, clean it and apply
again sealing compound LOCTITE
Tighten gearbox evenly with 2 Allen screws M8x45 and 8 Allen screws U
M6x45 with lockwashers crosswise. Tightening torque for M8 = 25 Nm
(220 in.lb) and for M6 = 10 Nm ( 90 in.lb).
Check gear backlash with dial gauge I radially on propeller flange O, see
dim. i in para 15.
If the studs P for attachment of fuel pump { have been removed, fit the
2 studs M8x23/14 secured with LOCTITE
tighten to 8 Nm (70 in.lb).Install fuel pump with insulating gasket } and
tighten with lockwasher and hex. nut q M8. Torque to 15 Nm (133 in.lb).
Remove crankshaft locking screw and screw in crankshaft plug screw
with Cu sealing ring and tighten to 22 Nm (195 in.lb). For inspection turn
crankshaft with wrench 24 a/f on hex. screw on magneto side.
9
7
00274
fig. 159
® 221 into the gear cover and
8
{
10
12 13
Initial issue, Jan. 01/2002
®
574.
page 102