The engine case will come covered in grease and will need to be properly degreased and cleaned, including all the oil passages inside the case.
The case as it arrives, front view
The case as it arrives, side view
It is important that everything is spotless, not only to remove the protectant grease, but to make sure there are no shavings left over from machining the case.
Separate the case halves.
Separating the case halves
The two halves separated
The left case half
To do a thorough job you will need to remove the case plugs. The holes can later be filled by tapping them and screwing in special plugs. These holes are where the oil galleys were machined into the case.
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