trans or torque converter????
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,648
From: SE Florida
The 4R100 in your truck is a four speed, not a five speed. So 4th gear IS overdrive. You have 1, 2, 3, and 4. There is no other gear above 4th.
Even if it wasn't locked up you needed to replace it if you want the rebuilt transmission to last more than a few miles. NEVER reuse the old converter when rebuilding a transmission, unless you have the converter cut open and rebuilt.
Even if it wasn't locked up you needed to replace it if you want the rebuilt transmission to last more than a few miles. NEVER reuse the old converter when rebuilding a transmission, unless you have the converter cut open and rebuilt.
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Junior User
Joined: May 2015
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The 4R100 in your truck is a four speed, not a five speed. So 4th gear IS overdrive. You have 1, 2, 3, and 4. There is no other gear above 4th.
Even if it wasn't locked up you needed to replace it if you want the rebuilt transmission to last more than a few miles. NEVER reuse the old converter when rebuilding a transmission, unless you have the converter cut open and rebuilt.
Even if it wasn't locked up you needed to replace it if you want the rebuilt transmission to last more than a few miles. NEVER reuse the old converter when rebuilding a transmission, unless you have the converter cut open and rebuilt.
Thanks for the info on the gears. I didn't know that.
I actually pulled the trans apart to clean it because the tq converter was junk and found all this lol
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Junior User
Joined: May 2015
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So I will be needing a little help on what parts I need. I will get a whole rebuild kit but the broken stuff I'm not sure exactly what is all is and want to make sure I have it. There was a bearing in there that fell apart and a gold colored part that is cracked in 3 spots. I will take pictures tomarrow.
Postmaster
Joined: Dec 2010
Posts: 2,951
Likes: 4
From: Gary,Indiana
So I will be needing a little help on what parts I need. I will get a whole rebuild kit but the broken stuff I'm not sure exactly what is all is and want to make sure I have it. There was a bearing in there that fell apart and a gold colored part that is cracked in 3 spots. I will take pictures tomarrow.
Sure Lock Spiral Snap Ring - 36744-01 - Sonnax
If you are going to build your own trans and if you do your homework on the design flaws of the 4R100 I am sure you will do a better rebuild than a local tranny shop. Most tranny shops just throw new parts in it and send you on your way.
Here is a link to my trans build it might be helpful.
https://www.ford-trucks.com/forums/1...1-rebuild.html
Pump bushing and front seal
https://www.ford-trucks.com/forums/1...p-bushing.html
Post Fiend
Joined: Mar 2015
Posts: 5,277
Likes: 32
From: Blairsville, Pennsylvania
I've only read about it and filed it in the memory banks as "if I ever tear into my trans" Might be good for OP?
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Junior User
Joined: May 2015
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Here are the pictures of the parts I don't know what there called but I need them.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,648
From: SE Florida
That's the infamous mechanical diode. You can't get another one of them. There are kits available to replace it with a sprag type one way clutch.
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Junior User
Joined: May 2015
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is there instruction on installation? this is all new to me my family needs this truck back.
More Turbo
Joined: Feb 2004
Posts: 643
Likes: 3
From: North Branford
Get yourself a copy of the ATSG guide. It will have all the info you will need.
www.atsg.us
You can find them on evilbay
www.atsg.us
You can find them on evilbay
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Junior User
Joined: May 2015
Posts: 66
Likes: 0
while searching for the diode upgrade kit i found this
http://www.ebay.com/itm/FORD-4R70W-4R75W-INTERMEDIATE-MECHANICAL-DIODE-14-SPLINE-1998-UP-D76652C-/160463001774?hash=item255c5718ae&vxp=mtr
that is what i need and blew up inside?
and is this the updated better part?
http://www.ebay.com/itm/FORD-4R100-TRANSMISSION-DIRECT-DRUM-5-CLUTCH-WITH-SPRAG-ASSEMBLY-2000-UP-/171868262617?hash=item28042590d9&vxp=mtr
just trying to get an idea of what is going on all help is deeply appreciated
http://www.ebay.com/itm/FORD-4R70W-4R75W-INTERMEDIATE-MECHANICAL-DIODE-14-SPLINE-1998-UP-D76652C-/160463001774?hash=item255c5718ae&vxp=mtr
that is what i need and blew up inside?
and is this the updated better part?
http://www.ebay.com/itm/FORD-4R100-TRANSMISSION-DIRECT-DRUM-5-CLUTCH-WITH-SPRAG-ASSEMBLY-2000-UP-/171868262617?hash=item28042590d9&vxp=mtr
just trying to get an idea of what is going on all help is deeply appreciated
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,648
From: SE Florida
That's the 4R70W version of the mechanical diode. It's similar to the one that you had. It isn't identical.
I don't think that drum has all the pieces you need to convert a mechanical diode trans. Home - Transtar Industries list this:
555C Direct Drum Conversion Kit, E4OD Ratchet to 45 Element Sprag (4 Clutch)........... 1 98-Up 36555EK
which is what I think you need. You might contact them and ask. It does concern me that this is listed for 98 and up, the ratchet (mechanical diode) was only in 2001.
I don't think that drum has all the pieces you need to convert a mechanical diode trans. Home - Transtar Industries list this:
555C Direct Drum Conversion Kit, E4OD Ratchet to 45 Element Sprag (4 Clutch)........... 1 98-Up 36555EK
which is what I think you need. You might contact them and ask. It does concern me that this is listed for 98 and up, the ratchet (mechanical diode) was only in 2001.
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Junior User
Joined: May 2015
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i signed up to thie site so i can see the part and price.
so that drum is part of what i would need to covert it?
i read a tsb on this and it looked to me like i need 1 more disc to make it work but again not 100% sure on that
http://ww2.justanswer.com/uploads/s4..._PO755_TSB.pdf
if i will only need that other part i will order the part tonight. i bought a new torque covertoer from napa in town here $301 with my discount. should have if friday.
so that drum is part of what i would need to covert it?
i read a tsb on this and it looked to me like i need 1 more disc to make it work but again not 100% sure on that
http://ww2.justanswer.com/uploads/s4..._PO755_TSB.pdf
if i will only need that other part i will order the part tonight. i bought a new torque covertoer from napa in town here $301 with my discount. should have if friday.
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
It looks like the direct drum, you posted, is the correct one. It has the needed thrust washer that goes under the roller sprag type one-way clutch. Also, in one of your pics, it looks like the Center Support housing may be worn. It is one of the trouble spots that Ed (BadDogKuzz) was referring to. It would be a good time to upgrade to a machined Center Support housing with steel spacer ring while you are in there. While the ATSG manual is a good reference for proper parts orientation, it leaves a lot to be desired in blueprinting an automatic transmission. There are some steps, you can take, that will give an increase in longevity/reliability.
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Junior User
Joined: May 2015
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Alright I have not had time lately to do anything but I will soon so I want to get parts coming. Here are a couple kits I have found wanted to know your thoughts on them. One is alto one is borg Warner. My truck is used to haul my family, go camping, trailering car to race track (car weighs 2,400 lbs) truck is completely stock lots of highway driving.
http://www.ebay.com/ulk/itm/370471986612
http://www.ebay.com/ulk/itm/321424126154
http://www.ebay.com/ulk/itm/370471986612
http://www.ebay.com/ulk/itm/321424126154