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Old 02-14-2009, 05:08 PM   #1
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Default B4 diff screw

For the b4 i can never fit the differental spring on the diff screw even if i precompress the spring i cant even start the diff screw into the locking t-nut am i doing something wrong? i have just built my differentials without the spring.
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Old 02-14-2009, 05:22 PM   #2
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Build per manual instructions and you may have to push the t-nut down into the outdrive so the end of the bolt can start threading into it. Be sure the "T" end of the nut is facing the outside of the outdrive and not flipped around backwards. That diff spring is a vital component of the package and must not be left out also. Hope I helped you a bit.
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Old 02-14-2009, 05:33 PM   #3
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the t-nuts the right way and pushed all the way down the outdrive slot and it the screw still cant thread into the tnut with the spring on it and yes im building it straight as the manual says
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Old 02-14-2009, 05:37 PM   #4
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Quote:
Originally Posted by sszzxx View Post
For the b4 i can never fit the differental spring on the diff screw even if i precompress the spring i cant even start the diff screw into the locking t-nut am i doing something wrong? i have just built my differentials without the spring.


This is going to sound strange but make sure the old spring is out. Also check for stuff down where the spring goes. Other then that it should cat well before it to the bottome of the slot in the outdrive. Check the other side also where you put the diff parts in. Have seen where a guy had an extra washer.
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Old 02-14-2009, 09:23 PM   #5
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There are nuts that just didn't get any threads cut in them!

I've seen a non-threaded nut four times in 58 years!!!

Two bolts in the same time.

So, take the t-nut out and the screw out and see if they will go together, just to remove this 1 in some number, from being the problem.

Check the threads on the screw also.

===

Once doing a diff rebuild I had a like problem until I removed one of the two springs LOL I had forgot that I didn't removed the spring and tried to put another one in the diff!!!
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Old 02-14-2009, 09:40 PM   #6
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The two diff halves are different and the spring will only work with the t-nut on one half. If you build it with the t-nut in the wrong half of the diff you will have the problem you are having.

The t-nut and spring should be in the left diff half. I included a picture of the half in question
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B4 diff screw-left-diff-half.jpg  
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