Part 32 Re-Fitting The Magneto Flywheel ...

Introduction ...

This page contains photos of the process of re-fitting the magneto flywheel to a ROTAX 912ULS engine (built August 2006).



ROTAX 912ULS refitting the magneto flywheel

Image 1

Here you can see we have our rebuilt flywheel, the hex head bolt and washer, a new lock washer and suitable socket for torqu'ing up the flywheel ...

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ROTAX 912ULS refitting the magneto flywheel

Image 2

Close up of the lock washer - always use a new one! ...

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ROTAX 912ULS refitting the magneto flywheel

Image 3

Flywheel hex bolt reassembled and cleaned up with new lock washer and large washer. Note the orientation of the lock washer ...

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ROTAX 912ULS refitting the magneto flywheel

Image 4

Here we are looking at the magneto end of the crankshaft with a groove cut in it to accomodate the woodruff key ...

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ROTAX 912ULS refitting the magneto flywheel

Image 5

Degrease the end of the flywheel and replace the woodruff key, angling it as shown to facilitate easier sliding of the flywheel hub into position ...

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ROTAX 912ULS refitting the magneto flywheel

Image 6

Slide the flywheel back onto the crankshaft taking care to locate the groove in the flywheel with the woodruff key. Once you have verified that the flywheel is in the correct position relative to the woodruff key start to tighten the hex bolt having applied the correct retaining compound as specified in the Rotax Heavy Maintenance Manual and torque to target rotational torque as specified in the Rotax Heavy Maintenance Manual ...

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ROTAX 912ULS refitting the magneto flywheel

Image 8

Some views of the torque'd up flywheel ...

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