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Rear end defining

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Old Jan 6, 2008 | 06:47 AM
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Rear end defining

I am pretty sure my rear in my dump truck is a sterling (86 f350 4x4 6.9). The axle on the drivers side clunks when you start to move either forward or back. The fill point is on the top with a plastic cover by the yoke. Are there numbers stamped on it (housing) or is there a way to tell you the ratio without taking the cover off?. Also this may sound foolish but are they all the same width as far as sticking out from the sides of the truck.
 
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Old Jan 6, 2008 | 07:07 AM
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If you think the axle is OEM then check the door post label under axle..... use that info to find info here....

Axle codes

https://www.ford-trucks.com/article/...de_Chart_.html

http://www.drivetrain.com/Fordtrkratio_posidata.html

There may also be a tin label attached to a cover bolt on the pumpkin........
 
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Old Jan 6, 2008 | 07:24 AM
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Originally Posted by PLC7.3
If you think the axle is OEM then check the door post label under axle..... use that info to find info here....

Axle codes

https://www.ford-trucks.com/article/...de_Chart_.html

http://www.drivetrain.com/Fordtrkratio_posidata.html

There may also be a tin label attached to a cover bolt on the pumpkin........
I think its oem? There is no sticker as i put on a new cab and doors.And the tin tag is gone. But i did see that there is an additional drain hole on the drivers side bottom of the diff in front of the axle tubes. dont know if this helps to narrow done the choices??
 
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Old Jan 6, 2008 | 07:45 AM
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Check this Dana 80 picture......... disregard the disc brakes.

http://www.allworldautomotive.com/vi...oto_15979.html

Is this a home grown dump truck or built by Ford. Check those identifying marks info on the pages I mentioned above.
 
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Old Jan 6, 2008 | 07:47 AM
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Originally Posted by boggle
I think its oem? There is no sticker as i put on a new cab and doors.And the tin tag is gone. But i did see that there is an additional drain hole on the drivers side bottom of the diff in front of the axle tubes. dont know if this helps to narrow done the choices??
There is 12 bolts holding diff cover on?
 
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Old Jan 6, 2008 | 07:53 AM
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Originally Posted by PLC7.3
Check this Dana 80 picture......... disregard the disc brakes.

http://www.allworldautomotive.com/view_Dana_Dually_Ford_E_350_450_series_Rear_Differ ential_Assemblies_auto_part_photo_15979.html

Is this a home grown dump truck or built by Ford. Check those identifying marks info on the pages I mentioned above.
Not home grown came as a cab and chassis and dump body was added . Looks like the shock brackets are held on by a u bolt?
 
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Old Jan 6, 2008 | 08:43 AM
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Originally Posted by PLC7.3
Check this Dana 80 picture......... disregard the disc brakes.

http://www.allworldautomotive.com/view_Dana_Dually_Ford_E_350_450_series_Rear_Differ ential_Assemblies_auto_part_photo_15979.html

Is this a home grown dump truck or built by Ford. Check those identifying marks info on the pages I mentioned above.
Doesn't quite look the same i took a couple of pics but cant seem to attach them?
 
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Old Jan 6, 2008 | 09:23 AM
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Create a gallery and upload the pictures to your gallery.

There is a total of three axle configurations used in the F 350.

Two go with a frame width of 37.5" measured from outside to outside at the rear of the truck.
A 37.5" frame means the truck left the factory with a pickup box installed.
Single rear wheel 53.75" between back plates.
Dually axle 57.75" between back plates.

Then there is a 34" frame which left the factory as a cab and chassis.
Dual rear wheels 53.75" between back plates.
Cab and chassis trucks also have 2.5" wide rear springs.

The single rear wheel axle and the cab and chassis rear axle are the same length, but the spring perches are in different locations because of the frame width differences.
 

Last edited by Dave Sponaugle; Jan 6, 2008 at 09:28 AM.
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Old Jan 6, 2008 | 12:25 PM
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Originally Posted by Dave Sponaugle
Create a gallery and upload the pictures to your gallery.

There is a total of three axle configurations used in the F 350.

Two go with a frame width of 37.5" measured from outside to outside at the rear of the truck.
A 37.5" frame means the truck left the factory with a pickup box installed.
Single rear wheel 53.75" between back plates.
Dually axle 57.75" between back plates.

Then there is a 34" frame which left the factory as a cab and chassis.
Dual rear wheels 53.75" between back plates.
Cab and chassis trucks also have 2.5" wide rear springs.

The single rear wheel axle and the cab and chassis rear axle are the same length, but the spring perches are in different locations because of the frame width differences.
I measured my frame and it is 34" and springs are 2.5" I will try to create a gallery so i can put up the pics.
 
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Old Jan 6, 2008 | 01:04 PM
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Pics of the truck and rear diff are in my gallery, Thanks for the help.
 
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Old Jan 6, 2008 | 07:13 PM
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Pretty sure Dana's have the fill plug in the tin cover. It is not like the sterling 10.25 I have.
 
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Old Jan 6, 2008 | 08:29 PM
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Sure looks like the DANA 80......
 
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Old Jan 6, 2008 | 09:24 PM
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Sterling 10.25"

All the Dana axles have a much more defined ring gear area on the rear cover.
Also every one of my files show the Dana rear axles having the fill plug on the back cover.

12 bolts on the cover also says Sterling.
Dana 60,70 and 80 have 10 bolts.


And I also must say that is one nice looking 86.
 

Last edited by Dave Sponaugle; Jan 6, 2008 at 09:26 PM.
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Old Jan 6, 2008 | 09:47 PM
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I think that PLC is right. An 80 is the only one that has ears on the top like his. But that only came in f-superduty's, right?
 
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Old Jan 6, 2008 | 10:14 PM
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And most of them had 10 lug wheels.
Still say it is a Sterling.
 
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