DocsMachine
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- August 9, 2011
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Hello, new reader looking for some advice. I've already picked up quite a bit of useful information from the archives, but I've got a couple of questions I couldn't find the answer to.
I just yanked the 4R55E out of my '95 Explorer, and got it taken down. I'd found plenty of junk and debris in the pan, so I knew something was up, the only question was how bad it'd be. Turns out to be pretty bad.
While some parts- like that planetary- will definitely need to be replaced, I'm wondering if some of them can be fixed.
For example, both clutch drums where the bands ride are worn- not badly, but there's clearly some wear. I have a pretty well-equipped general machine shop, and I can easily turn or grind the OD of the drums back to smooth and round again. The question is, will that throw the drum out of spec?
I suspect the worse of the two won't need much more than 0.010" to 0.020" removed, and I know the bands have some adjustment. Is this possible, or should I start sourcing replacements?
The same goes for the "Input Shell"- it's thrust face faces this planetary, and while the bronze thrust washer took most of it, the shell got pretty beat up as well. Again, I can pretty easily turn or grind the face back to smooth and straight again, but I might have to take .040" or .050" off on this one, and I have no idea if that can or would throw any of the internal spacings off and cause some unknown problem.
Again, fix or replace? I'm not necessarily being cheap, but I am in Alaska, and it'll take a couple of weeks to order replacements, if I can find the right ones.
Last is the case itself; the reverse servo cylinder wall got pretty badly chewed up:
This, too, I think I can fix by sleeving the case. Is there any reason I shouldn't try that? An hour or two on the mill beats having to source a donor trans- or worse, having to pull another donor trans.
Thanks.
Doc.
I just yanked the 4R55E out of my '95 Explorer, and got it taken down. I'd found plenty of junk and debris in the pan, so I knew something was up, the only question was how bad it'd be. Turns out to be pretty bad.
While some parts- like that planetary- will definitely need to be replaced, I'm wondering if some of them can be fixed.
For example, both clutch drums where the bands ride are worn- not badly, but there's clearly some wear. I have a pretty well-equipped general machine shop, and I can easily turn or grind the OD of the drums back to smooth and round again. The question is, will that throw the drum out of spec?
I suspect the worse of the two won't need much more than 0.010" to 0.020" removed, and I know the bands have some adjustment. Is this possible, or should I start sourcing replacements?
The same goes for the "Input Shell"- it's thrust face faces this planetary, and while the bronze thrust washer took most of it, the shell got pretty beat up as well. Again, I can pretty easily turn or grind the face back to smooth and straight again, but I might have to take .040" or .050" off on this one, and I have no idea if that can or would throw any of the internal spacings off and cause some unknown problem.
Again, fix or replace? I'm not necessarily being cheap, but I am in Alaska, and it'll take a couple of weeks to order replacements, if I can find the right ones.
Last is the case itself; the reverse servo cylinder wall got pretty badly chewed up:
This, too, I think I can fix by sleeving the case. Is there any reason I shouldn't try that? An hour or two on the mill beats having to source a donor trans- or worse, having to pull another donor trans.
Thanks.
Doc.
