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Ford Tractors Discussion Forum
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Differential housing studs

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BigGeorge

02-07-2005 14:47:47




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An earlier post said the studs in the diff. housing on my jubilee should be torqued to 70 ft.lbs. At 60ft.lbs I noticed the metal around the stud holes began to pucker so I removed the studs,(I had only put in 2) filed the area flat and lowered my torque setting to 45ft.lbs. and installed the 13 studs. I installed the paper thin gasket and the trumpet and thats when things got ugly. I could no longer get a full nut on any of the studs. I was 2 or 3 threads short all the way around. The studs and nuts are all stock and I even measured the stud length and compared it to the parts manual. All are the correct length. It seems by torquing them the shoulders went too far into the stud hole. I guess the remedy would be longer studs, but I'm just curious if this has happened to anyone else. I removed all the studs and luckily the threads in the housing arent buggered up but I could see where the shoulder of the studs were just starting to crush the first thread. Thanks in advance for any help.

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Dan

02-08-2005 07:03:34




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 Re: Differential housing studs in reply to BigGeorge, 02-07-2005 14:47:47  
Axle studs to differential housing should be 40-45 lbs and the nuts should be 55-60 lbs.

HTH,
Dan



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Bob

02-07-2005 15:53:18




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 Re: Differential housing studs in reply to BigGeorge, 02-07-2005 14:47:47  
I think the torque value of 70 FT LBS was meant as the value the NUTS on the studs should be torqued to, after assembly.

It doesn't sound normal to torque the actual STUD into the casting that tight. You're lucky you didn't break the casting.

Typically, a stud is screwed in "snug", and if there is a worry of it working loose or leaking, LockTite will solve both preoblems.



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BigGeorge

02-07-2005 16:22:19




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 Re: Differential housing studs in reply to Bob, 02-07-2005 15:53:18  
Bob,or anyone interested, I found the post. In "search", type in DIFFY STUDS, it will take you to the article titled "lift arm pin wiggles and giggles" posted by Dell on 12-17-04



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BigGeorge

02-07-2005 16:09:10




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 Re: Differential housing studs in reply to Bob, 02-07-2005 15:53:18  
Bob, the post I was refering to I believe was from Dell. It stated that the studs were to be torqued to 70ft.lbs and the nuts to 55ft. lbs. This seemed excessive to me too. I used Locktite blue on the threads to prevent leakage. Good thing I didnt let it set up over night or I never would have been able to get the studs back out.



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Everett

02-07-2005 16:45:45




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 Re: Differential housing studs in reply to BigGeorge, 02-07-2005 16:09:10  
I believe the nut and studs he was refering to are the ones that the three point hitch arms are attached to. Could be wrong though. Everett



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BigGeorge

02-07-2005 16:56:21




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 Re: Differential housing studs in reply to Everett, 02-07-2005 16:45:45  
No Everett, those 3 point hitch pins are supposed to be torqued to 150 ft.lbs. according to Dell. If you read the post from Dell you will see he is refering to the diff. to trumpet studs. He clearly states 70ft.lbs. on studs, 55ft.lbs. on nuts. I wish Dell would see my question and respond.



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