7.5 rear axle fill plug size/pitch

[dylannicus]

This weekend upon trying to change my diff fluid in my 2000 ranger I started to strip my rear diff fill plug. 7.5" diff, I am wondering if anyone has the size/thread pitch or where I can get another one
Thanks!

 

[Uncle Gump]

Did you strip the threads or the drive socket?

I could be wrong... but I believe they are just a 3/8 NPT.

Pipe threads don't require a bunch of torque... a wrap of tape or a touch of sealer and run them in snug. Folks tend to go way overboard on pipe threads..

 

[Curious Hound]

3/8"npt sounds about right. Cheap at your nearest hardware store. If in doubt buy a 3/8 and a 1/2 and a small roll of thread tape. You're still out the door for less than $5.

 

[19Walt93]

I've never used sealer or thread tape on rear end plugs, nor have they leaked. They need to be more than snug but not torqued up like a lug nut, I put a drop of lube on the threads. The key is to remove the plug and check the fluid during services so it doesn't rust in place. When the 7.5 first appeared in Fairmonts we all used a 1/2 to 3/8 adapter on a 1/2 breaker bar to remove them- and often twisted off out adapters because the factory was using water as a coolant when they cut the threads, then winding the plug into the still wet threads. Most of us bought dedicated 3/8 square sockets to pull the plugs.

 

[dylannicus]

Did you strip the threads or the drive socket?

I could be wrong... but I believe they are just a 3/8 NPT.

Pipe threads don't require a bunch of torque... a wrap of tape or a touch of sealer and run them in snug. Folks tend to go way overboard on pipe threads..

Stripped the drive socket just a tad, I can probably still work it out but I wanted to grab a replacement first so I don't have trouble closing it up again. Thanks, I'll post when I get the 3/8 npt and how it works out

 

[dylannicus]

Stripped the drive socket just a tad, I can probably still work it out but I wanted to grab a replacement first so I don't have trouble closing it up again. Thanks, I'll post when I get the 3/8 npt and how it works out

So a couple weeks ago I finally did the diff. and was able to work the old plug out without drilling or anything as I first thought I would have to. The pipe fittings I bought were too small to properly fit, a near exact replacement was diff. cover fill plug, Dana 30, 84-18 Jeep Models made by Omix-ADA