100 rear diff - nut torque

[John_W]

Hi guys,

I pulled the differential out of the rear axle pumpkin so I could make a new gasket to, hopefully, prevent the gear oil drip drip drip. I have it all back together but I have not been able to find any reference to the proper torque for the ~10 or 12 nut which hold it in. I assume that tightening the nuts real good will help prevent the gear oil leak at this joint but I really don't want to go too far and snap a stud.

Any ideas on proper torque for these nuts?

Thanks

John

 

[zblu]

probably just snugged up enough to sandwich the gasket tight, kind of like an oil filter today, ie, tighten up gently in a manner similar to head torquing then another 2/3 of a full circle so you dont crush the gasket too much

 

[Bob_Spidell]

Those are 3/8" fine--24tpi I believe--studs. The nominal torque--from the charts--is 30-35 ft-lbs, which I've always used with no problems. If the gasket is thin paper--it should be--you can't crush it much. I put a thin skin of gasket sealer--I prefer Permatex Aviation Form-A-Gasket or Hylomar--on both sides of the gasket.

If you still have a leak you'll want to have a look at the pinion seal (under the U-joint flange).

 

[tahoe healey]

I'd replace that seal now if you can get to it easily. And that takes about 140 lb torque, if I remember.

 

[Bob_Spidell]

Yep. Just did it.