Rotary Seal Reassembly - Rotax 912 Series Maintenance Manual

13.3.7)
00387
fig. 079
00388
fig. 080
Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II

Rotary seal reassembly

See fig. 079, 080 and 081.
See SI-912-001.
Press new oil seal Q 12x30x7(sealing lip lubricated with motor oil) with
sealing lip facing inwards, into ignition cover using punch W, part no. 876
510 .
Carefully push rotary seal E part no.. 850 945 on punch R
part no. 877 258 , and press the water pump shaft T
carefully to positive stop of the insertion jig.
2
Place pump gear into gear cover. The larger collar of the
gear should face towards inside, to the crankcase. Turn
insertion jig R and push water pump shaft T with rotary
seal E already fitted into ignition cover. Turn pump drive
gear into a position to align with pump shaft.
1
Now place the ignition cover under a hand press (20 kN /
4400 lb. capacity) on a plane face and press pump shaft into
position until stop. Then turn ignition housing and press
water pump shaft back using 10 mm (.4 in.) punch R until
level with sealing face. Turn water pump shaft for check.
NOTE:
00389
5
3
4
The spring of the rotary seal presses the water
pump shaft outwards towards the sealing face
Y, depending on axial clearance O. See
fig. 082.
4
fig. 081
3
page 56
Initial issue, Jan. 01/2002