Broken Flywheel 1999 F-350 Dually Crew Cab 7.3L - Ford Powerstroke Diesel Forum
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Old 09-22-2010, 03:47 PM
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Exclamation Broken Flywheel 1999 F-350 Dually Crew Cab 7.3L

I have had 2 different dealerships and one transmission shop install 5 flywheels with the adapter plate, per the Ford TSB, in the last 50K miles and it has now failed again. Thankfully under the 12 month / 12K mile warranty. None of them seem to be able to solve the real problem except for throwing parts at it. Does anyone know the cause?
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Old 09-22-2010, 03:49 PM
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you have a line up issue , or to much crankshaft end play, hard to say really without looking at something like that
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Old 09-22-2010, 04:00 PM
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Thanks for the rely. The truck is stock! Definitely needs an expert to look at it and I doubt that would be a Ford mechanic
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Old 09-22-2010, 04:05 PM
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Originally Posted by Formula Racer View Post
Thanks for the rely. The truck is stock! Definitely needs an expert to look at it and I doubt that would be a Ford mechanic
stock or completly built makes no difference in flywheel durability , i am/was a ford mechanic and there are alot of good ones out there , ford paid my bills for 21 years until a month ago, so just because you havent had luck with the one you dealt with , dont bash the rest
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Old 09-22-2010, 04:11 PM
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Accept my apologies, I just happened to run into 2 at 2 different dealerships that cannot think outside the box. I am trying a different dealership next.
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Old 09-22-2010, 04:14 PM
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Accept my apologies, I just happened to run into 2 at 2 different dealerships that cannot think outside the box. I am trying a different dealership next.
i understand , i just hate to hear all techs included in someones vent , i try to have the good ones back thats all
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Old 09-22-2010, 05:04 PM
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What type of flywheel are they putting in? If its a dual mass like stock then that could be a start.
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Old 09-22-2010, 05:14 PM
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What type of flywheel are they putting in? If its a dual mass like stock then that could be a start.
he is referring to an auto trans , 99 up didnt have dual mass
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Old 09-22-2010, 05:29 PM
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It goes from a slight chatter to a loud rattle within 20 - 30 miles and the entire center is broken loose when they remove it. I've seen a few other posts with the same situation.

Interestingly when first purchased it was replaced at 10K and again at 14K, this time using the Ford TSB 99-23-6. That lasted until 102K. Then replaced at 124K, 129L, 142K and 147K. I now have 157K and it is broken "again".

So I am told keep the 7.3L, so far the best Ford diesel. The truck is immaculate. But this is getting old and I don't even tow regularily any more since I quit formula racing in 2006, except for an ocassional trip to the lake with a 20' boat on an aluminum trailer.

I'm a Ford truck guy and refuse to try Mopar again and won't go GM.
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Old 09-27-2010, 02:53 PM
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Heh Ford Buddy, I am now told that Ford engineers think a new tranny is the solution. What do you think. Probably going to be a $3K price tag +/-.
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