Drive Shaft Failure 7.3

Bgreene

Tremor Member
Founding Member
Joined
Oct 24, 2020
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Location
Colorado
Current Ride
2020 F250 Tremor 7.3
Took the Tremor to the dealership to have new tires put on. Nitto Ridge Grapplers-Factory size. After they were mounted, balanced and alignment was completed I was on my way, or so I thought. Leaving the dealership I noticed a horrible vibration at all speeds. Returned to dealership and they confirmed alignment and balance was good. Left again with the same vibration. Maybe there was a hard spot on the tires, or they needed to break in?? Made it about 10-miles and the vibration was getting noticeably worse so I went to another nearby Ford dealership to have them inspect. I had them confirm the alignment and balance that was just completed was within spec. They confirmed everything was good and couldn’t figure out why the truck was violently shaking. The Tech even replaced the u-joints but it still didn’t fix it. Finally, after a call to Ford it was stated that numerous drive shafts have “deflected” on the Super Duty’s when putting the truck on a lift due to the suspension/drive shaft dropping. Needless to say, the driveshaft has to be replaced, and of course this comes two weeks before I leave for a hunting trip. I can’t believe this happened and hope it can be completed prior to the trip. Otherwise, my teeth are going to rattle loose on the way…
 
well, that's not optimal. Also, in the case that it can't be completed before your trip, I would suggest really evaluating a "Plan B". That kind of vibration can't be good for the things connected to either end of the "deflected" drive shaft and it would suck to get stranded because the transmission or other relatively important item broke.
 
Holy cow, going to watch this one closely. The trucks on this forum get lifted in the air a lot, anyone else experience this? Quite concerning if this isn’t a rare exception.
 
Yeah this sure would suck off-warranty. Must require some pretty specific circumstances (as in maybe the clock positions of the universal joints or something)???
 
WTF over, you would have thunk Ford’s engineers would take that into consideration, sounds like a major screw up on Fords part
 
I wonder if there's a TSB or recall on this, something official yet.
 
Yeah this sure would suck off-warranty. Must require some pretty specific circumstances (as in maybe the clock positions of the universal joints or something)???
Gotta be, right? Else there would be tons of reports on this.

I was planning to do my own oil changes since there appears to be plenty of room without a lift of any sort. This is a fantastic reason on top of saving money and avoiding careless techs.
 
Would it cause a low speed clunking sound by any chance? I brought it to the dealer to do the exhaust and spacer puck. Got a slight clunking sound after that. But two weeks ago I brought it in for something so I had them change the oil. Now the clunking is worse. It was on the lift of course.
 
If it were me, I'd want them to show me how that shaft could be bent on a lift. Should be real simple -- just put the truck on a lift and show me that shaft being impinged somehow. I just don't buy it. I think it's more likely they lowered it on something and bent it.

Sounds like you are still driving it? I really would not be driving that.
 
If it were me, I'd want them to show me how that shaft could be bent on a lift. Should be real simple -- just put the truck on a lift and show me that shaft being impinged somehow. I just don't buy it. I think it's more likely they lowered it on something and bent it.

Agree it sounds suspicious. I'd think there has to be a TSB on this if the stealership was being straight. Or at least we'd be seeing many more reports and YouTube videos with people losing their mind about this.

Very curious to hear @fordguy74656's take…
 
100-02 Jacking and Lifting
2022 F-250-600 Super Duty
Description and Operation

Jacking and Lifting - Overview​

Lifting and Jacking Points
warning.jpg
WARNING: When jacking or lifting the vehicle, block all wheels remaining on the ground. Set the parking brake if the rear wheels will remain on the ground. These actions help prevent unintended vehicle movement. Failure to follow these instructions may result in serious personal injury.
warning.jpg
WARNING: Never get underneath a vehicle that is supported only by a jack. The jack could unintentionally lower. Always support vehicle with floor stands. Failure to follow these instructions may result in serious personal injury.
warning.jpg
WARNING: Only raise the vehicle when positioned on a hard, level surface. Attempting to raise the vehicle on an uneven or soft surface may result in vehicle slipping or falling from the jack or jackstand. Failure to follow this instruction may result in serious personal injury.
warning.jpg
WARNING: Turn off (disable) the power running boards (if equipped) before jacking, lifting or placing any object under the vehicle. Never place your hand between the power running board and the vehicle. Extended power running boards will retract when doors are closed. Failure to follow these instructions may result in serious personal injury.
NOTE:
Crew Cab pickup 4WD shown, others similar.
imagen2.dll



ItemDescription
1Radius arm lifting points
2Frame lifting points
3Rear axle lifting points

Lifting and Jacking Points – Front
Use the following illustrations to determine the recommended lifting points for the vehicle being lifted. The lifting points will vary depending on the type of hoist being used and the vehicle configuration.
imagen2.dll

NOTICE: When raising a vehicle on a hoist, use care when positioning the hoist adapters prior to lifting the vehicle so that hoist arms do not interfere with the surrounding suspension or steering linkage components.
NOTICE: Jacking the vehicle is intended to be used in an emergency for changing a deflated tire. To avoid damage to the vehicle, never use a jack to hoist the vehicle for any other purpose.

Only the specified jacking points may be used for jacking and supporting the vehicle
Lifting and Jacking Points – Rear
NOTICE: Do not use the differential housing as a lift point. Leaks or damage to the rear axle cover and adjoining differential housing surface may occur if a floor jack or any lifting device is allowed to contact the cover at any point where the cover joins the housing.
NOTICE: Position lift arms or floor jack on flats of rear spring brackets to avoid damage to rear axle.

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© Copyright 2021, Ford Motor Company.




I CALL BULLSHIT. They screwed yours up somehow and are covering. Bet you 10 bucks it wont be claimed under warranty. If this were true every truck would have an issue. Ive blown air springs on my town car with driveshaft rubbing on the floor pan and did not damage anything.
 
Took the Tremor to the dealership to have new tires put on. Nitto Ridge Grapplers-Factory size. After they were mounted, balanced and alignment was completed I was on my way, or so I thought. Leaving the dealership I noticed a horrible vibration at all speeds. Returned to dealership and they confirmed alignment and balance was good. Left again with the same vibration. Maybe there was a hard spot on the tires, or they needed to break in?? Made it about 10-miles and the vibration was getting noticeably worse so I went to another nearby Ford dealership to have them inspect. I had them confirm the alignment and balance that was just completed was within spec. They confirmed everything was good and couldn’t figure out why the truck was violently shaking. The Tech even replaced the u-joints but it still didn’t fix it. Finally, after a call to Ford it was stated that numerous drive shafts have “deflected” on the Super Duty’s when putting the truck on a lift due to the suspension/drive shaft dropping. Needless to say, the driveshaft has to be replaced, and of course this comes two weeks before I leave for a hunting trip. I can’t believe this happened and hope it can be completed prior to the trip. Otherwise, my teeth are going to rattle loose on the way…
@Bgreene how did this turn out?
 
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