711 loader cylinder leak

Tom Bond

Member
Had a nasty leak this morning off the street elbow on my loader cylinder. What a mess! So the manual says to tighten the teflon nut to seal any leak on the street elbow. This thing was really shooting a large amount of oil from where indicated on the pic. Is there supposed to be a teflon washer of some type under that nut or can I just teflon tape about 4 or 5 wraps on the threads to seal it up? Or is there a replacement nut and sealing washer available? For that matter, is that nut really necessary? Wouldn't be the same just teflon taping the 3/8" elbow threads and screwing it in securely? Only reason I could see it for the nut is for positioning the elbow and tightening it down to lock it in place.
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I've never seen a locknut like that before on a pipe fitting. If it were me, I'd pitch the iron fitting and replace it with a steel one. Put
2-3 wraps of teflon tape on it and tighten it to where it needs to point.
 
Looks like I found my problem after I removed the lock nut. The fitting was split under it. Anyone know if the teflon washer in the nut is still available? If not, a new fitting, some teflon tape and it's going back together as is. That is, when it cools down some. 111° heat index right now in NE Illinois.
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Took the advice received on here and swapped to a steel street elbow instead of cast. Just eliminated the sealing lock nut.This fitting tightened securely. All good. Back to work..Thanks all....
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