4l80e valve body rebuild

[blackbeard_lives]

3rd burned up for the previous owner of my 02 gmc 1500hd and i read that the sonnax sure cure valve body parts can prevent that from happening again so i got the drift and guide kit used off ebay and need to get my valve body fixed up, but i can't find youtubes or write-ups on how to do this part so if anybody has any refrences for clearer instructions, im not even 100% certain which bore the afl is.

here's all my parts pulled out and laid on top of their respective holes, i think. i need to find a pre 04 4l80e valve body diagram to make sure i didn't mix anything up. i will post replies with more pictures and information

 

[blackbeard_lives]

here's me holding a 4l80e afl drift in front of what i think is the afl hole, which instructions say to run the drill bit first and then the drift, and if that's done proper and cleaned the replacement is that solid silver cylinder on the right? previous sonnax toolkit owner welded a driver onto a 7/16" drill bit, is that the one that is run in the afl hole first? Thanks for your guys' time and help, i need to find a write up on how to install the sure cure kit.

 

[blackbeard_lives]

lastly, the rod im pointing at was the first that got the roll pin out, and when that pin came out, the spring shot the rod right out of the bore and I didn't notice which way it was oriented when in the valve body. it's almost mirror image, with the top being a longer gap that i'm pointing at. if i had to guess i'd say the long gap would go to the outside of the valve body but i have no idea I could have it upside down orientation right now. thanks again for everyones time!

 

[Marky Dissod]

@NickTransmissions is the guy to call for help here ...

 

[NickTransmissions]

3rd burned up for the previous owner of my 02 gmc 1500hd and i read that the sonnax sure cure valve body parts can prevent that from happening again so i got the drift and guide kit used off ebay and need to get my valve body fixed up, but i can't find youtubes or write-ups on how to do this part so if anybody has any refrences for clearer instructions, im not even 100% certain which bore the afl is.

Here you go - give this a watch, will cover everything from start to finish for 4L80E VB overhauls and likely answer all of your questions:

 

[blackbeard_lives]

o shoot i shoulda looked more closely at nicks' 4l80e playlist, it's in there i just missed it, this should help a ton thanks!

 

[blackbeard_lives]

Here you go - give this a watch, will cover everything from start to finish for 4L80E VB overhauls and likely answer all of your questions:

running some parts thru the washer tonight and my reverse check ball disappeared. i have the new sonnax reverse pistons but i don't think there's a check ball in that kit. was i supposed to have to reuse the old ball? i noticed in some transgo instructions it says to leave out that ball but that's a different kit. i am dual feeding internally, direct no middle seal on the 2 piston halves, case plugged and pump drilled. guess i'm hoping the junkyard has a 4l80 and not just 4l60 trucks, so i can pull a tiny ball, darn it.

 

[NickTransmissions]

running some parts thru the washer tonight and my reverse check ball disappeared. i have the new sonnax reverse pistons but i don't think there's a check ball in that kit. was i supposed to have to reuse the old ball? i noticed in some transgo instructions it says to leave out that ball but that's a different kit. i am dual feeding internally, direct no middle seal on the 2 piston halves, case plugged and pump drilled. guess i'm hoping the junkyard has a 4l80 and not just 4l60 trucks, so i can pull a tiny ball, darn it.

Some of the overhaul kits come with a new set of check balls...Otherwise you can go grab one from your local hard parts supplier, probably for free or just leave it out, assuming you're talking about the reverse check ball at the rear of the case. If you're talking about one of the two 5/16" check balls in the valve body, you have to have both of them installed. Check w/hard parts suppliers, they should have some or even a good-used valve body you can harvest without having to spend time at the junk yard...

 

[blackbeard_lives]

Some of the overhaul kits come with a new set of check balls...Otherwise you can go grab one from your local hard parts supplier, probably for free or just leave it out, assuming you're talking about the reverse check ball at the rear of the case. If you're talking about one of the two 5/16" check balls in the valve body, you have to have both of them installed. Check w/hard parts suppliers, they should have some or even a good-used valve body you can harvest without having to spend time at the junk yard...

yeah i've got the sure cure kit with the torlon balls, but those are smaller than the end plug ball that went missing. I only ever had 1 ball come out of my valve body, was i supposed to find two? if i buy a steel ball for a ball bearing from amazon, is it 5/16" or 3/8"? or metric?

 

[blackbeard_lives]

Some of the overhaul kits come with a new set of check balls...Otherwise you can go grab one from your local hard parts supplier, probably for free or just leave it out, assuming you're talking about the reverse check ball at the rear of the case. If you're talking about one of the two 5/16" check balls in the valve body, you have to have both of them installed. Check w/hard parts suppliers, they should have some or even a good-used valve body you can harvest without having to spend time at the junk yard...

never mind, found the check ball on the ground under the washing machine ha.

 

[blackbeard_lives]

Some of the overhaul kits come with a new set of check balls...Otherwise you can go grab one from your local hard parts supplier, probably for free or just leave it out, assuming you're talking about the reverse check ball at the rear of the case. If you're talking about one of the two 5/16" check balls in the valve body, you have to have both of them installed. Check w/hard parts suppliers, they should have some or even a good-used valve body you can harvest without having to spend time at the junk yard...

okay new problem. pump jammed nonto the turbine shaft so i had to pull the whole stack out of the transmission. before i drop this back in i noticed this bottom plate is moving around freely a lot. is there supposed to be this much freeplay for this part or do i need to take everything apart and build this stack back better. View attachment 624129
View attachment 624130
second pic shows how i can pull on the plate and close that gap. guess im tearing it all apart again tomorrow but should be a final time. i sandpapered the bushing on the pump so that it fits snug over the input turbine shaft but will actually get on and off the shaft without jamming. thanks for the help!

 

[Fless]

okay new problem. pump jammed nonto the turbine shaft so i had to pull the whole stack out of the transmission. before i drop this back in i noticed this bottom plate is moving around freely a lot. is there supposed to be this much freeplay for this part or do i need to take everything apart and build this stack back better. View attachment 624129
View attachment 624130
second pic shows how i can pull on the plate and close that gap. guess im tearing it all apart again tomorrow but should be a final time. i sandpapered the bushing on the pump so that it fits snug over the input turbine shaft but will actually get on and off the shaft without jamming. thanks for the help!

I'm unable to see your pics.

 

[blackbeard_lives]