6) Rotary Seal - Removal; 6) Rotary Seal - Refitting - Rotax 914 F Maintenance Manual

13.3.6) Rotary seal - removal

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Page Date
158 1997 02 01
See Pic. 117.
Remove old oil seal and rotary seal utilizing 2 pins Q 5 mm dia.
2
(0,2 in.) and suitable punch W. Oil seal and rotary seal will be
destroyed at removal and must be replaced.
13.3.6)
See Pic. 118/119 and 120
Press new oil seal Q 12x30x7, pre-oiled sealing lip showing
inwards, into ignition cover using punch W, part no. 876 510.
Carefully press rotary seal E on punch R, part no.877 250,
and press the water pump shaft T carefully into the positive
stop of the insertion jig.
Place pump gear with larger collar towards inside into igni-
tion cover. Turn punch R around and push water pump shaft
Pic. 117
T with rotary seal E already fitted into
ignition cover. Align drive gear with pump
2
1
Pic. 118
3
Pic. 120
Main
914 F
Rotary seal - refitting
shaft.
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: The spring of the
rotary seal presses the water
pump shaft outwards towards
the sealing face Y, depending on axial clearance O.
See Pic. 121.
Reference
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3
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Pic. 119
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Modification no.
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