Dual Mass Flywheel on F250 7.3 - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 07-22-2002, 06:26 PM   #1 (permalink)
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Dual Mass Flywheel on F250 7.3

My friend has a 93 F250 4X4 with a 7.3 diesel and 5 speed manual tranny. We thought that the clutch went out because he could let the clutch out, shift through the gears with out any grinding, oh and the truck did not move either. Basically, something broke in the middle. Pulled it apart over the weekend and the truck has a dual mass flywheel. Never seen one before but how do you tell it is bad? The clutch does not look bad and the only thing broken is the pilot bearing. The tranny seems o.k. too. NOW WHAT?

Has anyone ever had problems with the dual mass flywheels? How do you check? Does anybody rebuild these?
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Old 07-22-2002, 08:59 PM   #2 (permalink)
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the dual mass flywheel is notorious for failure. The idea behind them is to reduce drivetrain vibrations. They are not rebuildable and are very expensive to replace. LuK now makes a clutch kit that uses a standard type flywheel with special springs in the clutch to help eliminate vibration. There will be more vibration with one, but this regular flywheel can be turned if necessary as opposed to replaced. This clutch kit is about 1/2 the price of just the dual mass flywheel and you have to replace the clutch along with that flywheel. See www.dialaclutch.com for more info. Also see www.ford-diesel.com for info.
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Old 07-22-2002, 10:33 PM   #3 (permalink)
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Check the transfercase
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