No problem looks like me and you are the only ones around on this 4th of july holiday first day of the vacation week

 

Okay, pulled out that, heres a pic of all the parts. Everything looked nice and even the seals were fine. The only thing I notice is that the 2ns piston has 2 springs inside of it where my service manual only shows 1, but it has always been like that and 2nd worked fine before.

 

Everything does appear the be normal. I can only imagine now its a valve body issue perhaps , I am out of ideas to be honest. Accum is ok and servo is ok and you have 4th gear so band should be ok . valve body is all thats left really.

 

Alright, I guess I'll pull that off and look at it. I have a clue as to where it might be, from a checkball that pushed thru the plate before.

 

Frank you are so full of hot air.... holiday week comments...please dude, get a life. You do help folks here from time to time and that's great. But, you really should not take yourself so seriously.


As far as the servo, what I can see looks ok, but I cannot see the seals on the 2nd piston so well. Check those.

I have read the entire thread, have been following it and am not really sure what was originally done to the unit, not sure what the original symptoms were and not at all sure how many times this unit has been in to recently... Hate to ask but can you write a chronographic summary? I can tell that someone has obviously blocked the accumulators and you had to go back into it... I need a better, clearer picture of what has been happening. Rather than throw out possibilities that don't mean anything that is. Thanks

g

 

Sure thing, car had 102xxx on it and first thing that happens is the 1-3 solenoid went. I got into it then and the fluid was nice and burnt. Replaced both the solenoids. About 2000 miles later the 3-4 clutch pack went out. Trans was rebuilt. It needed a new reverse input drum when it was rebuilt because the old one was torn the hell up where the 2-4 band goes. After the rebuild everything was cool for about 4000 miles except some strangely hard 1-2 shifts. Last week I did the first WOT run since the trans was rebuilt, 1-2 good, wouldn't shift to 3rd until I let off some. The next time I stopped I had no 1st or 2nd gear. Replaced that accumulator piston, now I have 1st gear but no second, the car will run 1st and shift to 3rd even with the gear selector in manual 2nd gear. Reverse is good, 1,3,4, lockup all good. The seals on that servo were perfect as they were just replaced when the trans was rebuilt, they were all tight and had no visible damage. As it stands, the car drives as if 2nd never existed. It doesnt seem to try to put it in gear, it goes 1-3-4 very smoothly as if it was running perfectly.

 

Well, I decided I'm going to pull the trans tomorrow night and pull everything apart. I really need to find out what is wrong with this thing. Hopefully if I find something I can post a pic of it so you guys can give me a direction to go in.

 

Thanks for that narrative... helps a bunch!

You mentioned that there is a checkball that pushed through the Valve Body Plate. (I did not see that post yesterday) Which ball is that?

If you are only missing the 1/2 upshift, hold off on pulling it... let's check a few things in the control circuits. Check the 1/2 shift valve to make sure it is not sticking if you have not already.

You mentioned harsh 1/2 upshifts and the fact that there was a tube blocking the travel of the accumulator piston... The tube is the reason for that.

Are you using the correct 1/2 accumulator piston, correct pin diameter hole? If not it will bypass fluid pressure and cause a no 1/2 shift.

Give us a call today, talk to either me or John. I think we can walk you through this without havinbg to pull it, if not then when you do pull it you will know what you are going after when you get into it.

g

 

Well, the reason I say I want to pull it is I have very limited time with a lift, I can pull it tomorrow and put it back in on saturday. Living on base means I dont have a place to work on it whenever I want to. I've gotten it down to a 30 minute process to pull it so its not like its a big deal. This is the first auto I've ever owned so I'm kind of learning on the fly.

EDIT: I don't know which checkball it was for sure, but I know it started jumping back and forth from 1st to 2nd when it happened, like it would upshift and downshift very rapidly.

 

I understand about the limited availability of a lift. We gotta do what we gotta do!


How did you deal with that problem? New plate?

Could you provide a pic. of the plate showing where the ball went through?

g

 

Ill try and find one when I get back from work, I dont have the plate any more but I can show you where it was anyways.

 

Well what is important is the fact that you did not reuse the plate as I have seen done in the past.

At this point I would like to see how the valve body looks. Pay attention to the 1/2 shift valve in particular.

Call anytime.

g

 

Ill have it out and in pieces tomorrow night, will post up pics for the pros to look at.

 

Sounds good.

g

 

Okay, got into it and here are a couple of things I found.

This is the 2-4 band, looks messed up to me.



Heres the damn separator plate, ball went thru it again. It in the middle of the end towards the front, near the pump.



The camera didnt want to get a good one of this, but the output shaft is VERY loose and the sunshell rests to the bottom of the case, is that normal? My guess is no. Also, in the center there is a litttle yellow clip I suppose has to come off before the "carrier assembly" will come out, how does it come off?

 

Okay, got into it and here are a couple of things I found.

This is the 2-4 band, looks messed up to me.



Heres the damn separator plate, ball went thru it again. It in the middle of the end towards the front, near the pump.



The camera didnt want to get a good one of this, but the output shaft is VERY loose and the sunshell rests to the bottom of the case, is that normal? My guess is no. Also, in the center there is a litttle yellow clip I suppose has to come off before the "carrier assembly" will come out, how does it come off?

 

Use snap ring pliers to remove the yellow clip by spreading it and yes that band is fried. Not sure what you mean by the sun shell resting on case please explain that better

 

I mean, with the case resting level, the sunshell touches one side. like, I can grab the output shaft and wiggle it up and down and the sunshell will bang up and down in the case.

 

Tear it on down and see what you find the shell will move some without the upper stuff on it but in vertical position should not hit the case when turning the planet in the center

 

Its good in vertical position. Sunshell looks good, no cracks or anything. I still havent seen any reason why there should be no 2nd gear.