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XJWheelie
January 12th, 2005, 19:45
Is a new nut on a new pinion supposed to be difficult to tighten up? I was thinking that maybe they're made that way to help them stay together, but mine is a real bear to get tight even when the pinion is out of the dif and I'm just tightening the nut on the pinion.

Robert

ChiXJeff
January 12th, 2005, 19:51
Yes, it's a mechanical locking nut.

98XJ
January 12th, 2005, 19:52
I am sorry, but it sounds like you don't really know what you are doing.
Yes, it is normal unless you crosstreaded it. Besides preload, there are different forces that try to loosen the pinion nut. Rotation is one of them.
So when you put your pinion nut on, tighten it according specs given in whatever manual you have. Do not play with it because som pinion nuts have crash built in from facotry to stay tight when you install it.
P.S Why do you need to know this?

LET THE FORCE BE WITH YOU :worship:

explorer
January 12th, 2005, 19:52
Yes, you wouldn't be able to thread it on past half way by hand usually. The nut is deformed slightly on the outer portion, as installed. This is done, as you guessed to lock the nut to the pinion.

XJWheelie
January 12th, 2005, 20:45
Thanks Explorer and ChiXJeff. That's what I thought, but it's been 20+ years since I've built a differential and whenever something comes up that I'm not sure about I prefer to ask someone rather than just force it.

Robert

deathwobblezj
January 12th, 2005, 20:50
Thanks Explorer and ChiXJeff. That's what I thought, but it's been 20+ years since I've built a differential and whenever something comes up that I'm not sure about I prefer to ask someone rather than just force it.

Robert

thats smart :thumbsup: