Checking for Crankcase Cracks

by Eric Goethel in General Tech Discussion 13 years ago

Service Bulletin 912-029 specifies particular areas of concern to inspect for cracks in the crankcase. My question is, in order to inspect the lower right side of cylinder 4, is it necessary to remove the reduction gear?

Thanks,
-Eric Goethel

Re: Checking for Crankcase Cracks

by Rotax Owner » 13 years ago

Rotax Owner

1 36 0

Eric,

The SB-912-029 crack inspection is an external visual check only. It does not require any removal of engine components.

In section 4 of the Bulletin (figure 1), the dashed circle (4) indicating the area to inspect is to reference the general external area only, and does not indicate that the internal area is to be also checked.

SB-912-029 / 914 018 -Rev 3

Hope this information helps.

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Checking for Crankcase Cracks

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