Allison Rear adapter need help quick!!!

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EFIlivewire

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Dec 31, 2016
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Okay I understand I have a lack of knowledge on the subject but GM designs for lb7's injectors and ujoint\trans failure is sad. They even admitted it themselves. Second, in repliance to Mike L, I was planning on dropping the trans to put everything back on, I did read you stating to drop the trans, however when I was under there i had a lot of room because of 7" lift and didn't know if I could avoid it possibly. What was never said on any of the forums on this subject was gears and clutches coming out with the adapter. I will take some pictures and post them.
 

DangerousDuramax

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Nov 3, 2006
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but GM designs for lb7's injectors and ujoint\trans failure is sad. They even admitted it themselves.

NO THEY DIDN'T!! STFU and make some effort to save face. The more you post here the more you make a fool outta yourself. Go buy your peestroke and don't let the door hit you in the ass on the way out.
 

EFIlivewire

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Dec 31, 2016
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Okay your right my bad. I love my duramax I'm just trying to learn is all. I will try to upload some photos though
 

EFIlivewire

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Dec 31, 2016
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Allison trans parts that fell out after I removed adapter housing

These are pictures of the Allison trans parts that fell out after I removed my adapter housing not sure if that is normal or what order to put them back in once I drop my trans. Also theirs a piece still attached to my adapter housing and how do I get that off?
 

EFIlivewire

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Dec 31, 2016
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TheBac

Why do I keep doing this?
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Apr 19, 2008
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Oh man, you're screwed. Pure Diesel called it. You pulled the entire planetary out, plus the C5s and a whole lot more.

Time to pull the trans. Buy an ASTG book or ask politely for the rebuild procedure and torque specs, or better yet take it to a qualified shop and have them put it all back together.
 
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bmc1025

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Jan 25, 2013
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Your bitching about a 15 year old truck with a bad u-joint...... and bad injectors in a first design all new diesel engine, they did a lot more right than wrong to say the least!
All makes can break transfer cases and trans housings with bad or out of balance drive lines.
 

Mike L.

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Aug 12, 2006
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At this point you need to pull the bell housing off after you pull the trans. You will need to strip the case apart ( leave bell housing assembly intact ) and re-assemble everything in the case properly. If you haven't done this before, let a pro do it.
One wrong move and it will cost you thousands.
 

PureHybrid

Isuzu Shakes IT
Feb 15, 2012
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The planetaries are meant to be stacked in from the rear while standing on end, and you must have a main shaft support tool to maintain proper engagement. I've done it without one, but you have to hold the shaft up while you rotate the trans over. More of a PITA than anything.

On the plus side, now's the time to get your trans built :D
 

EFIlivewire

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Dec 31, 2016
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Right that makes sense but pure do I have to tear the whole trans from front to back or can I just build what fell out as long as I put it in properly. Also do you know what the tool is called to take the planetary off the old adapter housing?
 

PureHybrid

Isuzu Shakes IT
Feb 15, 2012
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A spanner nut socket.

For the price of two gaskets, the bellhousing can be pulled. It can be built up without pulling it, as long as everything on the rotating assembly is in place. But I'd take Mikes suggestions, that way you get the whole experience :thumb:
 

EFIlivewire

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Dec 31, 2016
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Okay thanks what is the order of what goes in though like according to the pictures I posted and what is that circle ring on the piece of paper on top of the housing picture
 

Budneeds2beers

Aka Mike Honcho....
Aug 25, 2016
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Man if you read any of mikes posts you would stop being a stubborn thick headed some b1tch! He told you what you should do (in one of the nicest rebuttals I've read from him on something like this). All your posts after that should be THANKS GUYS FOR YOUR HELP AND PATIENCE who do you guys recommend me send this to around me?. They shouldnt be well where does this or that and these two other things go.... look man i know whats its like to be in a jam cause of a problem i caused because i was under skilled and it ended up costing me triple the cost. Take these members advice and run with it. Good luck and happy New Years hope your on the road soon.
 

EFIlivewire

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Dec 31, 2016
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Anyone can sit there and say "take it to the shop". Mike is experienced and I appreciate his time or anyone else's for that matter but I wanted to know what exactly fell out, (names) and is their a way I CAN rebuild what fell out without taking it to a shop or tearing the whole trans myself. The only one who answered those questions thouroughly was pure. I called a guy from Allison and he said basically everything pure did. The transmission itself is perfect condition so no need to replace anything there or tear into that section. The whole point of a forum is to learn from other people and as I said I only know suspensions and motors. I wanted to save money by doing it myself and I will. Like I said I will learn every piece their is to know about Allison's and how they go on in order.
 

bmc1025

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Jan 25, 2013
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Big Bone, KY
You still don't get it many of us has been in your shoes. It sucks sometimes when you get in a bind and over your head. Things are going to get really expensive if you just slap it together and you will be in an even bigger bind.
The names to these parts are in the manual you are looking at clutches and steels of the c5 and the piston that applies them. Everything you see now is the easy part. There is a Torrington bearing on both sides of the sun hear behind what you can see in your picture. When you install the new housing the shaft is going to move the sun hear disloging one of the Torrington bearings. Everthing may sound fine with it out of place but prices of it are going to be wrecking the entire gear train as you drive essentially trashing the entire transmission.
 

EFIlivewire

On a Time Out
Dec 31, 2016
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Yeah but I don't plan on putting it back together out of place. I will be dropping the trans tomorrow and then placing very carefully everything back in correctly, that fell out, by manual and bolt the new housing together. It can be done. Tearing the whole trans because a few clutches and a piston fell out of the end just sounds overkill to me.
 
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