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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 11-25-2012, 02:52 PM   #1 (permalink)
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left rear locked

This is my first post so i hope its in the right place. My 1994 f250 4x4 7.3l with 86000 miles is having issues. The drivers side rear wheel is not turning at all. I removed the brake drum and put the truck in neutral and still nothing. The right side turns, this I know because of the the rut it has dug in the gravel. Could this be a seal issue a bearing or axel issue or what. Im not a mechanic or do I pretend to be.Usually after a few days some bloody hands and alot of web research I can figure stuff out. But this time all I keep coming up with are brake problems and I dont want to tear the thing apart if I dont have to .
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Old 11-25-2012, 03:44 PM   #2 (permalink)
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update---I just pulled the axel out. The hub spins with the axel removed. When I put the axel back in and bolted it back together.....no spin. There wasnt any scarring or debris on the axel or in the fluid leaking out so WTH wont it turn?
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Old 11-25-2012, 05:22 PM   #3 (permalink)
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Welcome to the Diesel Stop!
Are we talking rear or front? The rear hub is part of the axle, right?

Is the whole rear end up on jack stands?
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Old 11-25-2012, 05:30 PM   #4 (permalink)
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Thanks for the welcome! And sorry for the axle misspelling. The problem Im having is with the rear drivers side. It is not up on jackstands, should it be and why? Also Im not quite sure about the name of the exact parts. I unbolted the eight 5/8 bolts and slid what I presumed to be the axle out, and the part with the lug studs what I presumed to be the hub spun freely. Sorry for the mechanical ignorance, but Im a complete novice.

Last edited by CHADILLAC023; 11-25-2012 at 05:35 PM. Reason: incomplete reply
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Old 11-25-2012, 07:11 PM   #5 (permalink)
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If only one side of the rear end is off the ground, the other side won't turn. Depending on what differential you have, both sides will spin in the same direction or opposite when you turn one side.

I'm on my iPhone right now, so I will have to wait til I get to my regular computer and refresh my memory on that rear end do I can give you a better answer. Sounds like your taking about the backing plate, but I thought there was only 4 bolts holding it to the axle tube. Give me a little time.
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Last edited by chuckster57; 11-25-2012 at 07:16 PM.
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Old 11-25-2012, 07:28 PM   #6 (permalink)
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Please clarify: Is the wheel locked up, as in when you put the truck in gear and try to move forward it wont go? Like the brake is on?
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Old 11-25-2012, 07:40 PM   #7 (permalink)
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Okay..I think I got it now

Your working on a 10.25" full floating rear end. the axle has eight bolts that hold it in. and the lug studs are on the hub. with BOTH sides in the air, what happens when the axle is bolted in and you try to turn the whole assembly?
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Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
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Old 11-25-2012, 08:01 PM   #8 (permalink)
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I have not jacked up the other side to see if it spins I will try in the morning. I really appreciate the help it means alot. Thanks
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Old 11-25-2012, 08:11 PM   #9 (permalink)
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AS for diezelcrazees reply. Thats exactly what happened. The truck is on a gravel pad on the side of my house. The passenger side just spins and digs and the drivers side just drags. The only way I was able to move it forward was to put it in 4wd. I originally thought the front brakes locked up but that wasnt the case. Like I said before Im glad you guys are willing to take the time to reply to my posts. Thanks
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Old 11-25-2012, 08:16 PM   #10 (permalink)
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Since I am retired, I will look for a post in the morning. Between the 3 of us, we'll get it figured out!
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ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
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Old 11-25-2012, 08:33 PM   #11 (permalink)
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Yep we need more of a baseline to figure this one out. My first thought was a brake hanging, but I think you eliminated that.

Put it on stands and try turning the left wheel, then the right wheel. Do that first with the truck in park (or in gear if a manual), and then try and turn each wheel with the trans in neutral.

Something strange is going on here. Let us know what happens.
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Turbo Outlet Mod/Diamond Eye 4" SS Exhaust, DIY Propane, 10,000 miles on WMO/RUG Blend. Pics

Farm truck: 1989 F-250 XLT Lariat reg. cab
7.3 IDI, 4x4, 5 spd, manual hubs. WMO fueled

Massey Ferguson 1105 Farm Tractor WMO Fueled

1958 Caterpillar D6-9U Trying a little WMO in it......

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Old 11-26-2012, 08:02 AM   #12 (permalink)
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Sounds like you've got a limited slip rear end. This doesn't explain what your problem might be but this is normal operation with the limited slip. With the trans in neutral, not Park, rt. wheel still on the ground it's normal for the left wheel to be unable to rotate. But it will if you remove the left axle which you've done. If my memory's not failing so early in the morning, with BOTH axles in and BOTH rear wheels off the ground (trans in neutral) when rotating one wheel the other will rotate in the opposite direction.
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Old 11-26-2012, 08:25 AM   #13 (permalink)
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He said the wheel was locked and wouldn't turn when he tried to drive it forward, though. With the shaft removed, though, the wheel spun freely. That leads me to think there's a problem in the diff, but I can't think of anything that would lock one wheel up tight without affecting the other.
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Old 11-26-2012, 10:35 AM   #14 (permalink)
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Quote:
Originally Posted by LMJD View Post
with BOTH axles in and BOTH rear wheels off the ground (trans in neutral) when rotating one wheel the other will rotate in the opposite direction.

If it has limited slip (that is functioning) in the above scenario both wheels will turn the same direction.
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1994 F-350 XLT Crewcab 7.3 IDI Turbo, 4x4, E40D Auto, King Ranch Leather Seats.
Turbo Outlet Mod/Diamond Eye 4" SS Exhaust, DIY Propane, 10,000 miles on WMO/RUG Blend. Pics

Farm truck: 1989 F-250 XLT Lariat reg. cab
7.3 IDI, 4x4, 5 spd, manual hubs. WMO fueled

Massey Ferguson 1105 Farm Tractor WMO Fueled

1958 Caterpillar D6-9U Trying a little WMO in it......

diezelcrazees IDI website
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Old 11-26-2012, 11:58 AM   #15 (permalink)
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Ok. with both wheels off of the ground and the trans in park, wheels wont turn. wWith trans in neutral both wheels turn in same direction. Why wouldnt it work in gear? Could it be a transmission problem or is the rear end shot? Frustrating! The transmission was rebuilt about 18 months ago could this have anything to do with my issue?
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