Lycoming O-320 Torque Values

[The Green Baron]

I have an O-320 D2A wide deck that I am putting together. The Lycoming table of limits are confusing in a few areas.


Can someone please verify the torque on the 3/8" nose bolts (beside the main bearing) that through the crankcase? Also the 1/2" and 3/8" cylinder hold down nuts?

Just want to make sure that it's correct.
Thanks,
John

[Steve]

Use the torque values in the crankcase assembly chapter in the Direct Drive Overhaul manual, not in the table of limits appendix.

[The Green Baron]

Steve, thanks for answering. However the Overhaul Manual that I have shows the torque limits for the allen head nuts that are used on the older narrow deck O-320s. Mine are the plain 1/2 and 3/8" type nuts.