Diff plug x threaded

bluedog333 · May 5, 2015

What with me being muppet and all, I've managed to cross-thread the filler plug on my Salisbury rear diff, not massively, but enough so a tiny amount of oil can weep out. Doh! Funds don't allow many new parts, so can anyone give me a good reason why I couldn't use some PTFE plumbers tape to 'temporarily' remedy the problem? I don't want to retap the thread either as I'd only bugger that up too!
Cheers!

Marmaduke · May 5, 2015

PTFE or that hylomar stuff I would have thought would be fine

Station House · May 5, 2015

Can't think of a reason not to use PTFE

dcc · May 5, 2015

I personally would clean up the mating surface of the bolt shoulder and the surface on the diff. Clean the threads out, get yourself a copper crush washer, use rtv on the threads and torque up the drain bolt correctly. I had a similar issue years ago and this mether provided a good mating of the surfaces and reduced the chance for oil to seap.

Brown · May 5, 2015

I always put a smear of instant gasket compounds on filler and drain plugs anyway. So a little something to help the oil tightness won't do any harm.

bluedog333 · May 5, 2015

Cheers guys, bit of RTV and PTFE it is then. Thanks for the idea dcc but the diff plug has no shoulder, I do have plenty of copper washers for other sealing bolts though!

sp00k · May 6, 2015

Not worth the chance on a bodge in my opinion. Did something similar myself and it was recommended that I replace the diff cover. It was not an expensive part and when you see how thin the material is, you will realize that re tapping the same hole would be a futile exercise.

mick the builder · May 6, 2015

sp00k said:
not worth the chance on a bodge in my opinion. Did something similar myself and it was recommended that i replace the diff cover. It was not an expensive part and when you see how thin the material is, you will realize that re tapping the same hole would be a futile exercise.

+1

bluedog333 · May 7, 2015

I appreciate the "don't bodge it" viewpoint, but with the diff plug I'm a bit more lenient. The oil isn't under much pressure? So as long as I can seal the thread with some PTFE it should be fine, right? It's not ****ing out oil, just a tiny amount over time.
When funds allow, I'll get a new pan, but until then on my head be it!

mick the builder · May 7, 2015

Im was in the same boat as you, some how the drain plug fell out because the thread was gone. I cleaned the surrounding area up, stuck on an outside tap back plate on with isopon then screwed in a male end cap

bluedog333 · May 8, 2015

mick the builder said:
Im was in the same boat as you, some how the drain plug fell out because the thread was gone. I cleaned the surrounding area up, stuck on an outside tap back plate on with isopon then screwed in a male end cap

That sounds like a well executed bodge! Is it still holding up?

Station House · May 8, 2015

mick the builder said:
Im was in the same boat as you, some how the drain plug fell out because the thread was gone. I cleaned the surrounding area up, stuck on an outside tap back plate on with isopon then screwed in a male end cap

Now that deserves a creativity award Mick!

mick the builder · May 8, 2015

Still there and holding oil. Havent changed oil yet but should be fine. The flange on the back plate gives a good surface area for the isopon to grip.

Diff plug x threaded

bluedog333

Well-Known Member

Marmaduke

Well-Known Member

Station House

Well-Known Member

dcc

New Member

Brown

Well-Known Member

bluedog333

Well-Known Member

sp00k

Well-Known Member

mick the builder

Well-Known Member

bluedog333

Well-Known Member

mick the builder

Well-Known Member

bluedog333

Well-Known Member

Station House

Well-Known Member

mick the builder

Well-Known Member

Similar threads