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Old Dec 31, 2020 | 08:27 PM
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ZF6 Experts advice needed.

On the final day of 2020 I just got done towing my friends SUV to his house because his transmission went out, I go drop the trailer then head into town to get someting to eat then when I pull out of the parking lot, the clutch pedal feels different and starts sticking to the floor, I pull it back up and then I can't push the clutch, and the truck would go into any gear with it running but wouldn't move. I have it towed home, pull the transmission and find a broke clutch fork, and the South Bend clutch looks like its on its last leggs as well, I just put it in 4 years ago and only has 37,000 miles on it, flywheel has a pretty good ridge in it as well. I am going to replace it with a SB dual disc, but I also want the updated shift fork, new shifter bushings and the inner shift boot is torn. Anyone know the best place to get those last 3 things? Also how does the input shaft look?









 
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Old Dec 31, 2020 | 09:41 PM
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For the inner boot, if you are talking about the off white one I have a post with the part number and source somewhere on here. I also have the bushings information saved on my laptop. I also have the part number for the very small black boot under the white boot as well.

If you don't find my post or the other part numbers by tomorrow morning, I'll see if I can find them and post the details here.
 
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Old Dec 31, 2020 | 09:45 PM
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I need the small black boot that goes on the shifter assembly, I think I found it along with the bushings on Amazon.
 
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Old Dec 31, 2020 | 09:48 PM
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Originally Posted by 00t444e
I need the small black boot that goes on the shifter assembly, I think I found it along with the bushings on Amazon.


I'll check back tomorrow and see what you still need. Happy part number hunting sir.
 
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Old Dec 31, 2020 | 10:11 PM
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If that input shaft is smooth and parallel from one end to the other, then I'd say it's good, but you'd need to check it with a micrometer, it should be within about .0003" or less parallel wise, and with a smooth mirror-like surface.

Better put a decent bushing (oil impregnated bronze) in the new flywheel while you're at it.
 
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Old Jan 1, 2021 | 07:48 AM
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OK, so the parts were not quite as easy to find as I would have liked, but here are a couple that you may need. Sometimes it helps to use the term "S6-650" instead of ZF6 if looking on the worldwideweb.

My fill plug was seized and even though I fill from the top, I still wanted the plug to be able to be removed.
Fill/drain plug - https://www.transmissionpartsdistrib...07-0501209879/
Inner boot - https://www.transmissionpartsdistrib...99-1319306061/
Various parts - https://www.transmissionpartsdistrib...ry=S6-650+boot

I hope those help you sir and good luck with your project.
 
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Old Jan 1, 2021 | 10:19 AM
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Originally Posted by Greasemonkee
If that input shaft is smooth and parallel from one end to the other, then I'd say it's good, but you'd need to check it with a micrometer, it should be within about .0003" or less parallel wise, and with a smooth mirror-like surface.

Better put a decent bushing (oil impregnated bronze) in the new flywheel while you're at it.
I had the Kevlar pilot bushing in it before, but it looks like the Dual Disc I ordered comes with a pilot bearing instead.
 
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Old Jan 1, 2021 | 11:30 AM
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Originally Posted by 00t444e
I need the small black boot that goes on the shifter assembly, I think I found it along with the bushings on Amazon.
the whole assembly is not that expensive. One of the many things I’ve replaced. Usually shops don’t take the time to put them back on correctly or the inner white boot tears or goes missing.
 
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Old Jan 1, 2021 | 11:32 AM
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Originally Posted by Brandonpdx
the whole assembly is not that expensive. One of the many things I’ve replaced. Usually shops don’t take the time to put them back on correctly or the inner white boot tears or goes missing.
What inner white boot is there? Mine never had that.
 
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Old Jan 1, 2021 | 12:04 PM
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Originally Posted by 00t444e
What inner white boot is there? Mine never had that.
The white boot I referred to in post #2.

Finding the link now...

EDIT: https://www.ford-trucks.com/forums/1...l#post19020421
 
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Old Jan 1, 2021 | 12:15 PM
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Originally Posted by Sous
The white boot I referred to in post #2.

Finding the link now...

EDIT: https://www.ford-trucks.com/forums/1...l#post19020421
My inner and outer shifter boots are both black.
 
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Old Jan 1, 2021 | 12:25 PM
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Oh you were talking about the tiny black boot that sits right above the removable access plate (with the hex bolts) on the shift tower I'm assuming now...not the inner/outer boot assembly with the plastic bezel that screws to the floorboard with the 4 screws.
 
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Old Jan 1, 2021 | 12:28 PM
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Here is what I was talking about. Not expensive to just replace the whole thing. That inner white boot cuts down on noise coming into the cab.

https://www.ebay.com/itm/Ford-F250-F...-/321951328168
 
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Old Jan 1, 2021 | 12:35 PM
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Originally Posted by 00t444e
I had the Kevlar pilot bushing in it before, but it looks like the Dual Disc I ordered comes with a pilot bearing instead.
Dual disk does come with pilot bearimg, and it is a good one, use it.
You will like that clutch, it holds p to abuse well, and drives nice.
It pairs with the 180/30s in my work truck well, and gets abused badly with no issues to show after 2 years.

As a side note I saw a fb club post that said the dieselsite sleave kit for a bad shaft/bearimg does bot work in the dd, due to the bearings having a different external diamiter I believe.
 
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Old Jan 1, 2021 | 12:42 PM
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If you want get crazy with this grand repair you can install a new hydraulic assembly and a new pedal box as well. That little plastic "bird cage" retaining clip that holds the end of the master cylinder rod to the stub on the pedal is usually broken also. The clutch switch is probably fine to reuse.

https://www.partsgeek.com/lm5q3zy-fo...Pedal+Assembly
 
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