Worn Servo Bore Fix

RCodePaul

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Mark gets the post of the year for me...

2nd and 5th = OD gears, controlled by the OD servo. Yours has likely developed a leak due to the aluminum casing being worn down by the steel pin. Can be a relatively simple fix.

Read this site: http://www.fordservoboretransmissionfixsolution.com/index.html

It's a common problem on Explorers with high miles.

Son of a b*tch! I've been looking for a solution just like this for a loooong time. My tranny shop mis-diagnosed the worn servo bore and threw a solenoid pack at it. Dude pissed me off so badly I wouldn't go back. Was thinking I'd go through it myself, even bought an ATSG manual in preparation.

Also wondered why Ford didn't put o-rings in there to start with, Started a servo bore thread on here to no avail. Read every tranny post on here for a year.

And then M4rk comes up with this link. Freaking brilliant solution. Says, "this allows for doing the job by removing the upper and lower heat shields only which makes it possible to do the work in two hours or less as long as you have the right 90 degree needle nose pliers which we sell."

Read what this one dude wrote on the solution site, "Jay Wrote on 9-25-12
"Hi Andrew,
I wanted to let you know that I installed the replacement pistons this past weekend and after a year and a half, I have second gear and over-drive once again! My tyranny problems began over one and a half years and 15000 miles ago. I had been delaying the repair as I thought only a rebuild would get the job done. I now am able to forget all the peculiar driving habits I developed to nurse this thing past second and to avoid 3000 RPMS on the interstate.
Thanks for the fix,
Jay"

It seems focused on SUVs so I shot the seller a note about what it takes to make the servo accessible on the LS. The tranny tunnel is really tight.
Man am I ever hopeful.
Paul
 
Must drop exhaust. It will be a tighter fit than the Explorers I think. The site owner is very responsive and super helpful though.

The link posted by Shredicus uses an older bore kit. The new one requires zero drilling.
 
Must drop exhaust. It will be a tighter fit than the Explorers I think. The site owner is very responsive and super helpful though.

The link posted by Shredicus uses an older bore kit. The new one requires zero drilling.

How the frack did I miss that earlier thread? That is a tremendous read, am I correct when I think the spring is a 5R55N issue and not a 5R55S one? Either way, no way I should have missed that one. I did rebuild the engine and tranny in my high mileage 525 BMW and was at it pretty heavily when that thread was live, so that will be my excuse.
Thanks!
Paul

P.S. Long drawn out BMW project that's now done if you want to see it in time lapse...
http://www.bimmernut.com/forum/5-se...-trans-rrr-far-more-than-i-ever-expected.html
 
Good Luck! With 133K miles how much city is that? I wonder if I am going to be doing this someday. Too bad we can't just ditch the auto in these cars.
 
Keep in mind that this is a bandaid more than a fix. The proper fix prevents the elongation of the bore to begin with, by sleeving it with harder material. The o-ring simply prevents fluid from traveling through the elongated space.
 
I'm OK with the projected longevity of this fix. Plus, the seller said it is possible without removing the transmission. Might have to drop the tail of the tranny a bit though.
Gonna give it a shot.
 
I'm OK with the projected longevity of this fix. Plus, the seller said it is possible without removing the transmission. Might have to drop the tail of the tranny a bit though.
Gonna give it a shot.

Fair enough, it sounds like you are aware of the pros and cons of it. :cool: I do not think it can be done with the transmission in place, though.
 
Anybody have an idea what a dealer would charge for this plus the flush and filter all done at the same time?
 
I wonder if a dealer would do it for you....i bet an independent shop might if you give them all the instructions.
 
Anybody have an idea what a dealer would charge for this plus the flush and filter all done at the same time?

Alldata shows 4.2 hours to remove and replace trans, plus the time to replace the servo's, so I would imagine 5 to 6 hours labor without any issues like broken exhaust bolts. If someone figures out you do not need to remove trans then should be less.
 

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