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8N Axle bearing shims

J

Jason1Pa

Member
Ok guys got a question just to make sure I did everything ok. I put 3 on each side to start with expecting it to be too tight and it was. I was actually turning the the transmission. The manual says that the opposite axle should be rotating the same direction when too tight. In this case the opposite side was not turning at all.

So I added another shim to each side. This time it was much easier to turn the axle on one side and the opposite side was turning opposite direction.

For the heck of it I removed one shim on one side only and I had a slight drag and the axles were turning opposite of each other. so I put the other shim back in. There is no side shaft play at all so I think I'm good,but my question is why arn't my axle shafts turning in the same direction when too tight like the manual says and what I've read online? Could something else be wrong?
 
When I turned the left axle the
transmission gears were going around and
the right axle wasn't moving at all. Way
too tight I guess.
 
If you have brake drums installed, then the cause was likely brake shoe dragging drum instead of wrong number of shims.
 
No brakes or drum is on.
a213770.jpg
 
(quoted from post at 18:22:35 02/06/16) Picture is sidways
Click to expand...
n that case, I can't see the cause, other than possibly a little more or less friction on left/right. The idea of removing shims until both turn in same direction is that the inner ends of the axles are forced together tight enough that one will turn the other (transmission needs to be in neutral (ring & pinion free to turn). At this point it is acting as a locked differential. Add shims until the axles do not touch (desire 0.002 to 0.006 inch gap and now differential action can occur and one turns opposite of the other, assuming both axles are free to turn. Another approach is to use a dial indicator on axle end and push & pull an axle and if it can be moved more than 0.006", remove shim until movement is reduced to 0.002-0.006" range.
If less than 0.002" then add shim.
 
Thanks for your input JMOR. I understand
the whole process and what needs done it
just threw me off when both axles
wouldn't lock. I'm wondering now if I
really didn't have them as tight as I
thought when first starting out. Anyway
as of now I feel good that it is set
just about right but I may take your
advice and grab me a dial indicator just
to see what it says just to be sure.
Thanks again!!
 
I understand. Wife always tells me that if she asks what time it is, that I spend the next ten minutes telling her clocks work!
 
Thats fine no harm in that. I didn't
know the exact measurement between the
axles was and I didn't even think about
a dial indicator to check so I learned
something! ! Hhahahaha!!
 
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