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 Differential yoke rotation ease question

 Created by: Motoren
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 Posted: Aug 12, 2021 10:36AM
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Thanks MiniMike1.

Motoring or Motorin, Motoren, Motoryn, Motring? That is the question!

 Posted: Aug 12, 2021 08:39AM
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US
pull out one of the shims, retorque and try it again.

 Posted: Aug 7, 2021 02:21PM
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Thanks Dan. I think it may be OK, before my first post it seemed stiffer. With my second post not as much, which but a bit of temporary drag as , especially the right yoke is hand turn. I don't know if I could have done damage when I did the right yoke torque. My lack of knowledge regarding differential functioning gives me doubts I'm trying to verify or dispell. We we see if there are any other comments. Thanks again.

Motoring or Motorin, Motoren, Motoryn, Motring? That is the question!

 Posted: Aug 7, 2021 12:07PM
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CA
Sorry, that's the extent of the help I can offer. The last time I even touched a differential (Mini or otherwise) was somewhere around 1973, and that was just remove it and reinstall the whole thing to get to a loose shifter fork.

Hopefully someone who is familiar with rebuilding, shimming etc. will provide better advice.

I think turning either yoke by hand should need equal force, and in neutral it could result in the other one turning the opposite way - the differential gears are working  If you turn both by hand in the same direction it should have more resistance because you are turning the crown and pinion and the transmission output shaft.

.

"Hang on a minute lads....I've got a great idea."

 Posted: Aug 7, 2021 07:09AM
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Dan Moffet .... thanks very much. This is only the 2nd differential install for me, the last was nearly 10 years ago. Something has seemed different with this current process. Your guidance appears to be right on target!

The yokes when in neutral turn in opposite directions when the right yoke is turned, and when the left yoke is turned the right yokes doesn't move. This is not in accordance with your guidance. There also seems to be a binding felt when the left yoke is turned during this "in neutral" effort. So, as you indicate the "differential gears would be coming into play"? I may have caused this issue when I initially (wooden) blocked the left yoke when torqueing the right yoke. (instead of (wooden) blocked the right yoke. (Thus bending or damaging something?

The second test is when "in gear" turning one yoke does result in the other yoke spinning in the opposite direction. The force to turn either yoke is about equal, except there seems to be a binding during the rotation, with either yoke.

What should be done next?

Motoring or Motorin, Motoren, Motoryn, Motring? That is the question!

 Posted: Aug 7, 2021 02:44AM
 Edited:  Aug 7, 2021 02:46AM
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CA
That would be "no". Both yokes should turn equally freely, in the same direction at the same time with the transmission in neutral. If only one turns freely and the other doesn't, the differential gears would be coming into play.
If the engine is in gear, turning one yoke should result in the other one spinning in the opposite direction because of the differential gears. The force to turn either yoke should be equal.

.

"Hang on a minute lads....I've got a great idea."

 Posted: Aug 6, 2021 07:58PM
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I have refurbished a differential installed on 1275, with remote shift; and it is yet out of the engine compartment. I have shimmed the left output cover and the shafts turn easily by hand. Once I've torqued (70 fl lb) the castle nut on the yoke (or flange) the yoke(s) is very difficult to turn by hand. Is this correct?

Motoring or Motorin, Motoren, Motoryn, Motring? That is the question!