1949 F1 Dana 41 rear end keeps leaking, don't know what to do!

[kdelaney]

I recently bought a F1 Chassis from a shop a good distance away from my house. I got it home and noticed the recently rebuilt Dana 41 rear end was leaking from the drain plug area of the housing at a rate I never noticed at first. I drained the fluid and used liquid teflon tape on the threads of the top and bottom plugs. I pushed my chassis outside yesterday for the first time since I did the job and noticed that there was a couple drips of gear oil where the drain plug was. I thought it was just me not being clean enough. This morning I walked out into my garage and noticed there was an even bigger drip mark under the rear end. I looked under the diff and noticed there were 3 - 4 drips on the drain plug. Does anyone know if this is a common problem? If not what should I do?

[Willit Stop]

I had the same problem once. It turned out to be a small hole in the plug itself. It was a square drive female and the hole was in the recess.It might be worth checking out.

[kdelaney]

it is a square drive female plug now that I think of it. Thank you for the tip!

[Ross F-1]

I hate the recessed-head plugs, I replace them with a male square pipe plug.

[Harley Dean]

I had the same problem with my 48 F1. mine was leaking from cover the on the back and dripping from the drain plug.

[kdelaney]

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Thank you guys for the responses, problem is now fixed!

[JSeery]

Did you replace the plug?

[kdelaney]

yes, got a male plug from my parts truck, hopefully this will solve the problem!