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  #1  
Old 07-06-2010, 06:14 PM
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Good to see you getting it all back together. Maybe when you do the fluid change on the transfer case you can check the slack in the chain through the drain plug hole with a long skinny screwdriver or something...
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Old 07-07-2010, 05:23 PM
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Pprior to struggling to get the box in the car (its now up in the chassis but held in with 4 bolts before it got too dark...), i checked the chain through the drain hole.
Nice n tight with very minimal play.
Fluid that came out was still reasonably red and clear so happy it will be OK for while yet.




I hope.....
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Old 08-01-2010, 01:09 AM
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front diferential

Hi ,
it looks like u know something about trans and I was wondering if u could helpme w/ some tips ? last year I had to replace the transf case and the front drive shaft ...but I still hear that noise(bang) under the car when I on/off the gas pedal or if I bring the car the stop.I lifted the car and I noticed that the wheels have too much free rotation before to engadge the drive shaft ...it's the front diferential's fault , any chain slack ? and how to fix it ?thank u
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Old 08-01-2010, 12:37 PM
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Well not being an expert in the field i can only offer my opinion.

I would check the play from the front prop to the front wheels. if there is too much then the front diff will be the problem.
looking at realoem (RealOEM.com * BMW E53 X5 3.0d Final drive (front axle), parts, 4-wheel) there isnt too much detail in there..
Usually (in my experience) there is a certain amount of play in the diffs but shouldn't be excessive. you can open them up and re shim them to take out the back lash but will need to take the diff out first..

If there is a lot of play between the front and rear props then there is an issue with the transfer box. Do a search on here for transfer chain and you will see that it is not unusual to have a slack chain which could cause the noise.

Check all rubber components as a damaged doughnut can also give that thump.
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