Thud when coming to stop or leaving in 1st gear - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 04-15-2013, 06:07 PM Thread Starter
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Thud when coming to stop or leaving in 1st gear

Hi there,

Got a 2005 F350 6.0 with the auto tranny in it, when I come to a stop at a set of lights etc you can really hear the trans go back down into first get like a thud/feel this also or when you pull away you can sometimes hear this also. It shifts fine does not slip etc WOT no problem and shifts great. It's just whe I come to a stop or go to move off again I get a thud.

Any ideas what this could be? I'm thinking it could be a prop issue or something along those lines but I have had a look and can't see anything that would cause any reason for concern. I flushed the rear end fluid and everything looked ok in there, I also put a new filter on the trans and flushed the fluid with new ford fluid. The level is perfect and there is no leaks.

Cheers Phil
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post #2 of 4 Old 04-17-2013, 03:44 AM
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I would pull the drive line and remove the rubber boot and re-grease the splines. I would also check the carrier bearing and make sure the rubber around the bearing isn't coming apart. I had a Ranger that had the greased splines and it was popping when you'd stop and start so I pulled it out and re-greased them and the popping went away. I've had my drive line out in my truck and it's a heavy SOB.. Hopefully someone else will have some ideas.

Joe

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post #3 of 4 Old 04-30-2013, 07:24 PM
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Joe is right on when he says; "I would pull the drive line and remove the rubber boot and re-grease the splines."

I'm told that Ford has a bulletin that suggests the same fix.

My son developed a better fix.
He grinds a ring around the spline (not necessary but it allows the lube to distribute) and installs zerks on the shaft so it can be periodically, easily lubed.



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post #4 of 4 Old 05-03-2013, 03:56 AM Thread Starter
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I removed it and lubed it and all clunking has now gone away!!
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