Just helped a friend repair a log splitter where male fitting became cocked in the female bung of the hydraulic cylinder. Dropped a big piece of pine on the valve assembly (unprotected BTW) and it skewed the fitting about 30 degrees. The top two or three threads were smeared on one side of the female bung.
They were ORB straight walled threads, I was able to first run a thread chaser followed up with a ¾ tap. Cleaned up the threads enough that the replacement male fitting threaded and caught at least three sections of the undisturbed threads. Took torque and didn’t leak. Success.
My fall back was to weld on a new bung like the one below.
AF FBWO-08 - 1/2'' (#8) Female ORB (3/4''-16) Weld On Port [AF FBWO-08] - $8.25 : Clearwater Hydraulics LLC
I’m not a hydraulics expert. Maybe someone can enlighten all of us to the pros and cons of NPT Vs OBR fittings. Would guess the o-ring design of the ORB and a lock nut permit them to be positioned freely.
Lots of different solutions to this problem. Good luck with yours.