Who has a Yukon Aluminum threw bolt case?
#1
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is it quiet, and if so what gears do you have in it? I have had 3 ring and pinions in mine and they are all making noise. I just put my Yukon 3.75 back in and tried to set it back up this time running the backlash tighter and it is still signing to me. I am beginning to wonder if it is the case.
All the parts are brand new, I am about ready to take it to someone.
All the parts are brand new, I am about ready to take it to someone.
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is it quiet, and if so what gears do you have in it? I have had 3 ring and pinions in mine and they are all making noise. I just put my Yukon 3.75 back in and tried to set it back up this time running the backlash tighter and it is still signing to me. I am beginning to wonder if it is the case.
All the parts are brand new, I am about ready to take it to someone.
All the parts are brand new, I am about ready to take it to someone.
#3
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About 25 to 30 MPH. They just get louder from there. I can't figure out what I am doing wrong. Here is my last pattern. This is the Yukon 3.75.
I ran this gear before with about .010 lash to center the drive pattern up. This time I ran it at .005 to bring the drive down towards the toe. Same pinion depth as the first time I ran it, just tighter lash.
I ran this gear before with about .010 lash to center the drive pattern up. This time I ran it at .005 to bring the drive down towards the toe. Same pinion depth as the first time I ran it, just tighter lash.
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The depth looks good but I would put backlash back around .008-.009.
25-30 sounds too low with a pattern like that, what is the breakaway and turning torque of the pinion? Sounds like it may be pinion bearing whine from excessive preload...
25-30 sounds too low with a pattern like that, what is the breakaway and turning torque of the pinion? Sounds like it may be pinion bearing whine from excessive preload...
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#9
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I was reading 25 to 30 on new in the Ford manual, the Yukon manaul says 15 new and 6 used. It just depends on where you look. My bearings are not new but do not have but maybe 100 miles on them.
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Ok, what would you suggest. Its not to hard to pop out the pinion and loosen up the preload.
I was reading 25 to 30 on new in the Ford manual, the Yukon manaul says 15 new and 6 used. It just depends on where you look. My bearings are not new but do not have but maybe 100 miles on them.
I was reading 25 to 30 on new in the Ford manual, the Yukon manaul says 15 new and 6 used. It just depends on where you look. My bearings are not new but do not have but maybe 100 miles on them.
FWIW I've had bearings scream like a jet engine at 25in.lbs
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There is a formula to figure carrier preload: total torque - pinion torque x gear ratio = carrier preload
After reading some of your other post and re looking at your latest pattern I want to revise my suggestion on backlash to .006-.008
Last edited by Kevin97ss; 03-26-2011 at 03:15 PM.
#14
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I found it! The pinion support has been moving. I pulled the pinion out and noticed a contact spot on the outer heel/face of the tooth on the ring gear. The support is aluminum so I have been installing it with washers under the bolts. I think the washers are too big and not laying flat. The outer edge of the washer is laying on a radius part of the support. I put 40 foot pounds on the bolts.
I was just thinking that maybe I should use the biigger bolt holes on my housing since it has them already there. I am paranoid about using the aluminum support no and thinking about getting an iron one. What do you think about the gear? Is it ruined or should I run it? If I set it back up like I had it then it shouldnt even get contact out where these spots are.
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0358.jpg)
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0354.jpg)
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0355.jpg)
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0359.jpg)
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0360.jpg)
I put the pinion in a factory Ford support but it wont work with my yoke since it is for the Daytona style support.
I was just thinking that maybe I should use the biigger bolt holes on my housing since it has them already there. I am paranoid about using the aluminum support no and thinking about getting an iron one. What do you think about the gear? Is it ruined or should I run it? If I set it back up like I had it then it shouldnt even get contact out where these spots are.
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0358.jpg)
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0354.jpg)
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0355.jpg)
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0359.jpg)
![](http://i105.photobucket.com/albums/m232/tapyz250/IMAG0360.jpg)
I put the pinion in a factory Ford support but it wont work with my yoke since it is for the Daytona style support.
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The washers may have been a bit large but it looks like there is a 360 degree contact area under the head (black ring). My guess is the washer counter sunk itself and still had full contact.
The wear marks on the edge of the ring are concerning considering the pattern that was shown previous. Is it only on a cluster of ring teeth or every one?
The wear marks on the edge of the ring are concerning considering the pattern that was shown previous. Is it only on a cluster of ring teeth or every one?
#16
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The washers may have been a bit large but it looks like there is a 360 degree contact area under the head (black ring). My guess is the washer counter sunk itself and still had full contact.
The wear marks on the edge of the ring are concerning considering the pattern that was shown previous. Is it only on a cluster of ring teeth or every one?
The wear marks on the edge of the ring are concerning considering the pattern that was shown previous. Is it only on a cluster of ring teeth or every one?
#17
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Whoah that looks wild. On a lighter note I put mine in gear for the first time on jackstands today. No noise that I could tell.
Took me a bit longer to get it together than I figured but I had to machine my wheels and rotors and I swapped to a bmr tq arm which took some time cause my car is tight.
Anyhow did putting the 9" in your car raise the rear any? Mine is sitting way up now.
Took me a bit longer to get it together than I figured but I had to machine my wheels and rotors and I swapped to a bmr tq arm which took some time cause my car is tight.
Anyhow did putting the 9" in your car raise the rear any? Mine is sitting way up now.
#18
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Whoah that looks wild. On a lighter note I put mine in gear for the first time on jackstands today. No noise that I could tell.
Took me a bit longer to get it together than I figured but I had to machine my wheels and rotors and I swapped to a bmr tq arm which took some time cause my car is tight.
Anyhow did putting the 9" in your car raise the rear any? Mine is sitting way up now.
Took me a bit longer to get it together than I figured but I had to machine my wheels and rotors and I swapped to a bmr tq arm which took some time cause my car is tight.
Anyhow did putting the 9" in your car raise the rear any? Mine is sitting way up now.
I was just sitting hear thinking about the OEM Ford gear that I pulled from that old truck, went out to the garage, and sure enough it has the same spots on it. They are nowhere near as bad as the yukon gear and are barley noticeable. I may be able to stick it back in there.