Rolls forward in neutral, locks up rolling backwards??

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Well, I’m in the process of removing the valve body to see what the bands look like, and the park rod just will not come out. I’m starting the think it was never unjammed, but I wouldn’t have been able to move it forward.

I’m able to get the VB low enough to see the bands, and neither are bound up at all.
 
I didn’t see your reply before doing what I did. I ended up removing the C clip, separating the park rod from the VB. I took some pictures of the mechanism holding it in. I’m sure it’s a really basic solution, but I didn’t want to pull so hard that I ended up breaking something.
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Now that the valve body is out, I think my next plan of action is going to be to reinstall the driveshaft and get one rear wheel off the ground. Then have someone spin it while I can see what’s happening inside the trans.

The good news is I think the valve body looks to be pretty clean. No varnish, just some sludge here and there. I did notice some grit, the pieces I can see look like tiny sand particles.
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You can see right behind the front band those tangs are not far enough back. You have some clutches not lined up.
 
Thanks Roy. First, does this mean the transmission needs to come out? Second, would this cause the problem at hand?
 
Yes it’s going to have come out and front pump removed to remove that front drum and inspect the clutch teeth. I’m sure they are mangled. When you didn’t snug that front band bolt it dropped down and clutches disengaged.
 
Yes it’s going to have come out and front pump removed to remove that front drum and inspect the clutch teeth. I’m sure they are mangled. When you didn’t snug that front band bolt it dropped down and clutches disengaged.
It’s starting to make sense now that I’m seeing the parts and how they fit together. I’m definitely a visual learner.

Well, at least I don’t have to pull the engine again...yet. And at least there’s not much assembled that I would need to take apart in order to take out the transmission. There’s always a silver lining!
 
To get the park rod out you can rotate the sun gear until it opens enough to allow the rod to come out.
 
Your probably have so much trouble R&R that rod because the trans internals are bound up. They’re usually no that much trouble.
 
Yes, I just put my valve body in yesterday with the transmission in the car. Stuck my finger in the hole and rotated the sun gear until it opened enough to insert the rod.

But if yours is bound up it may not rotate.
 
I was afraid of something like that. I'm surprised that the pump even went all the way in without breaking something. Keep the pics coming!
 
I was afraid of something like that. I'm surprised that the pump even went all the way in without breaking something. Keep the pics coming!
I will definitely keep the thread updated. If anything it will help someone else in the future who might end up in the same situation. I really appreciate all the helpful advice everyone has given here!
 
I’ll tell you what, you have a damn good attitude thru all this. I’m afraid that damn trans would have wound up in my pond if it were me.
 
A factory service manual and one of the aftermarket Torqueflite books will help a bunch. Tom Hand wrote an excellent book on 994/727’s. The 727 book by Munroe is very good also.
 
A factory service manual and one of the aftermarket Torqueflite books will help a bunch. Tom Hand wrote an excellent book on 994/727’s. The 727 book by Munroe is very good also.
Thanks! I was browsing the chassis factory service manual, and the info is pretty limited.
 
I overhauled my first 904 a couple weeks ago. Not nearly as bad as I thought it would be. I took my time... like took it real slow, lol.

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Very nice. I’m worried that I’ll be tempted to do the same, since the trans will be pulled anyway. But I’m really wanting to get the engine finally started.
 
Stop right there. You don't realize that 90% of a tf's problems arise in the two front drums that you are already familiar with. The front drum that has the tabs on it that lock into the slots in the sun gear shell is the drum that holds the clutch pack for third gear; and it is also used in reverse. That front band is the only thing stopping it from dropping right out. It's easy to check the condition of the clutches; even if you don't want to replace the piston seals inside of it...The only other thing I'm suggesting is checking the clutches in the "forward" drum; which is the next one in there; the one that has the input shaft sticking out front. It's called the forward clutch because it's engaged when you put it in Drive, and stays engaged for all forward gears. Leave everything else alone and you won't get in over your head like so many first timers do.
 
Stop right there. You don't realize that 90% of a tf's problems arise in the two front drums that you are already familiar with. The front drum that has the tabs on it that lock into the slots in the sun gear shell is the drum that holds the clutch pack for third gear; and it is also used in reverse. That front band is the only thing stopping it from dropping right out. It's easy to check the condition of the clutches; even if you don't want to replace the piston seals inside of it...The only other thing I'm suggesting is checking the clutches in the "forward" drum; which is the next one in there; the one that has the input shaft sticking out front. It's called the forward clutch because it's engaged when you put it in Drive, and stays engaged for all forward gears. Leave everything else alone and you won't get in over your head like so many first timers do.
Thanks CudaFact, that's actually exactly what I wanted to hear. I feel comfortable pulling the drums and inspecting/changing the clutch plates and steels, but I'm sure we all know how easy it is to follow a rabbit hole and suddenly realize you've got the whole car apart and have no idea what you're doing or how you got there.
 
You are so right; I see it all the time, guys jump in and tear everything apart; try to do a super duper bang up job , then run out of patience near the end. There are several threads on here that I've followed and it ends up with the op having problems then just never posting any updates. And I saw it coming every time. There's a snap ring behind the forward clutch drum (on the front of the output shaft) that will hold everything in, so you don't have to worry about gears etc falling out after you take that drum out.
 
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