Slip yoke thud - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 07-16-2011, 01:44 PM Thread Starter
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Slip yoke thud

Ok I have figured out the thud in the trannie. It is the slip yoke, but why does it make a thud sound?
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post #2 of 4 Old 07-16-2011, 02:10 PM
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is it loose in the splines? you may need to add some grease to fill up the voids. ford has a special blue teflon grease we use

sure it's not the u-joints worn out?

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post #3 of 4 Old 07-16-2011, 02:17 PM Thread Starter
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I don't think it's the u joints because it's about 5 feet from when you take off it makes the thud. I think it's the slip yoke I just didn't know why it made the thud, the loose or worn splines makes sense.
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post #4 of 4 Old 07-19-2011, 07:15 AM
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Not loose splines, just use the Ford recommended teflon grease. This is a known condition of the slip yoke, solved with the Ford Teflon grease. Piece o'cake to fix

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