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post #1 of 10 (permalink) Old 04-09-2010, 08:27 AM Thread Starter
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4r70W videos

I came across these with google. I had never seen them and thought some people may find them as useful as I did.

http://www.magindat.net/ssm/info/4r70w-teardown.wmv
http://magindat.net/ssm/info/4r70w-subassembly.wmv
http://www.magindat.net/ssm/info/4r70w-assembly.wmv

originally found at http://www.mercurymarauder.net/forum...ad.php?t=18927

to give credit where credit is due


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post #2 of 10 (permalink) Old 04-09-2010, 08:50 AM
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I like how he got the 1-2 and 2-3 accumulators switched the first few times he referred to them...

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post #3 of 10 (permalink) Old 04-09-2010, 08:55 AM Thread Starter
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i didn't know any different. I am just trying to gain confidence in tearing into my old transmission just enough to get my output shaft out. I need it for the new transmission. I don't think I will be installing the output shaft to my new transmission, even with the videos. guess I'll just have to waste some money this time.

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post #4 of 10 (permalink) Old 04-09-2010, 12:15 PM
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It is easy to tear the transmission down to replace the output shast .. just messy, and you'll need a tool to remove the front pump ( I use a slide hammer and some motor mount bolts ) .. and a tool to remove the OD and Reverse Servo's - everything else unbolts and slides right out.
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post #5 of 10 (permalink) Old 04-09-2010, 05:14 PM Thread Starter
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well, I got everything out. and you're correct it was messy. I didn't need any special tools except some snap ring pliers. I don't think I damaged anything without the special tools. But, I didn't care. I only needed the output shaft. I did, however, find a (what looks like a) snap ring that was mangled on the back side of the front pump. I'll post a picture later. I also will post a picture of the output shaft. It looks a little rusted or something and am wondering if there is anything I should do prior to having it installed.
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post #6 of 10 (permalink) Old 04-12-2010, 08:20 AM
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that snapring is the diode snapring, common failure.
Those vids were on MN12Performance for years.

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post #7 of 10 (permalink) Old 04-13-2010, 12:21 AM
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Hmmmmm...two guys from MO that I have never seen at a midwest meet....INTERESTING...

SWS

Soon to have some MHS parts, cams, 'luminum block, lower compression, ported heads, autorotor, and need to make long tubes. I have almost all the stuff and need some #42-50s a bypass valve, and maybe a few other things.
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post #8 of 10 (permalink) Old 04-13-2010, 06:48 AM
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Quote:
Originally Posted by SilverFox View Post
that snapring is the diode snapring, common failure.
Those vids were on MN12Performance for years.
I have one out of a 4X4 truck on the bench with the following.

That snap ring he is talking about is totally off and destroyed.

They 'bottomed out' the vehicle and mashed the pan into the black harness and filter breaking off pieces that wandered all through the transmission. (the real cause of death in this case)

The case was cracked in a place where the case meets up with the extension housing which wasn't visible initially and hadn't been leaking. It had been that way for a while based on the corrosion I saw when it came apart.

And, the e-clip on the OD servo is broken.

There was also one of the common 'stupid' related problems and I can't think of it for the life of me. Too damn early.

That dude is HARD on vehicles.

All of this added up to smoked ugliness internally, but the hard parts were ok. The transmisison obviously saw way too much rpm more than once and obviously had been offroad to have mashed the pan and cracked the case like that.

I am glad this was a core instead of a customer. Even though I only ended up with parts instead of a buildable transmisison, I am still better off. I wouldn't want to try to build a transmission that would have to take that abuse. I bet the rest of the truck it came out of was beat to hell too.

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post #9 of 10 (permalink) Old 04-13-2010, 06:06 PM
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Thanks for posting the link to these. Your timing was perfect and i have used them already.
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post #10 of 10 (permalink) Old 04-15-2010, 03:43 PM Thread Starter
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not a problem. I thought it could be useful to some as it was to me.

BTW - SWS, I was at a meet in KC last year. I hope to make it to some this year. I may have one in springfield to install my dash.

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