[Rallylancer122]

For some reason I can't find this one... When installing an AN-to-Pipe elbow in an engine, say a AN823-4D for example, obviously it needs to be clocked. But it also needs to be torqued. I can find torque specs for pipe fittings in Lycoming's Service Table of Limits, but I don't see anything about clocking allowances. So if you hit the torque and aren't clocked correctly, what do you do?

Well, I know what most people do is just tighten or loosen it a bit and move on with life, but I swear I read some guidance somewhere, either in an AC or some manufacturers instructions that said something like "Torque to X and adjust Y degrees in either direction as necessary for alignment." However I can't seem to find it. For my own edification I'd like to see if there's actual written guidance on this or if I'm just remembering something that never actually existed.

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[mturnerb]

For some reason I can't find this one... When installing an AN-to-Pipe elbow in an engine, say a AN823-4D for example, obviously it needs to be clocked. But it also needs to be torqued. I can find torque specs for pipe fittings in Lycoming's Service Table of Limits, but I don't see anything about clocking allowances. So if you hit the torque and aren't clocked correctly, what do you do?

Well, I know what most people do is just tighten or loosen it a bit and move on with life, but I swear I read some guidance somewhere, either in an AC or some manufacturers instructions that said something like "Torque to X and adjust Y degrees in either direction as necessary for alignment." However I can't seem to find it. For my own edification I'd like to see if there's actual written guidance on this or if I'm just remembering something that never actually existed.

​

Look at section 5, where it discusses NPT pipe thread fittings.

 

[cvairwerks]

Table 2 in the Service Table of Limits section of Lycoming's manual: SSP-1776-5 give torque values for pipe plugs. Should be able to use the same for any other tapered pipe thread.