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New trans rebuild - No 3rd or 4th gear!

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Old Jun 5, 2007 | 07:41 AM
  #21  
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Default Air checking the clutches

I've got everything reassembled on the bench and I'm air checking the clutches with 50psi through the pump. It does leak down a bit but my question is - how much "blow by" is acceptable?

When I test the input shaft directly - there is no blow by at all on any of the passages.

All of the teflon rings, o-ring, bushings, stator...etc... look good (to me at least)

Any other suggestions? I've got to figure this out before I put it back together - I don't feel like going through this again

Thanks for everyones help - I greatly appreciate it!
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Old Jun 5, 2007 | 07:58 AM
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another thing... I was reading on 4l60e.com and it said if you make a 3-2 down shift and the 3-4 clutch doesn't release fast enough when the 2-4 band applies the 3-4 clutch will burn up.

This is a problem I was noticing when the transmission was working. It would take a full second or so for it to kick down to 2nd. Would this burn the clutches with only 20-30 WOT 3-2 downshifts?
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Old Jun 5, 2007 | 03:47 PM
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ttt
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Old Jun 5, 2007 | 03:52 PM
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#7 checkball and capsule leaking can cause 3-4 burup
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Old Jun 5, 2007 | 08:30 PM
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whats the best way to test that? its difficult to see..
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Old Jun 6, 2007 | 03:53 PM
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Ttt
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Old Jun 6, 2007 | 05:43 PM
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well the only way to test is with the tranny broken down you turn the case upside down bore liquid (tranny luid) through the case in to the bore for the #7 checkball and then you look inside to see if it leaks out....i always just plug the damn thing with a cup plug
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Old Jun 6, 2007 | 06:35 PM
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I bought the Sonnax plug kit and installed the new check ball... However I may have found some other problems...

new post coming in a few minutes..
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Old Jun 6, 2007 | 06:49 PM
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Default VB gasket alignment

This may lead to some pressure problems...

Tranny Gods - Please click on the link below to view the pic.

http://www.terratraction.com/incoming/DSC03272.JPG

Whatcha think?

Thanks,
David
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Old Jun 6, 2007 | 06:52 PM
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are your checkball planted into the seperator plate
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Old Jun 6, 2007 | 06:55 PM
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Originally Posted by Predator T/A
are your checkball planted into the seperator plate
I'm not understanding what you are asking...?
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Old Jun 6, 2007 | 06:56 PM
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looks like the gasket isnt matching up what year is the tranny...youve got them on the right side there are different gaskets one for 2000 and above and ones for earlier models
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Old Jun 6, 2007 | 07:00 PM
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Valve body seperator plate gaskets can definately cause improper clutch feed issues. Looks like you may be on to something there. I have not had great success with the Alto clutch setup you used in the photo. The steels are very thin and have a tendancy to cone when heating up... that in turn leds to the clutches binding which creates more heat. But thats my experience.

Use Borg Warner clutches, clean up those feed holes, use the return springs in the H/D-2 kit, air check it again then go for it. Good luck with it.

g
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Old Jun 6, 2007 | 07:02 PM
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. I have not had great success with the Alto clutch setup you used in the photo.



thats why i use the z-pack
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Old Jun 6, 2007 | 07:02 PM
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Originally Posted by Predator T/A
looks like the gasket isnt matching up what year is the tranny...youve got them on the right side there are different gaskets one for 2000 and above and ones for earlier models
I thought the same thing as well but dismissed that because I did not see the white stripe on the gasket. I was thinking it was more of an alignment during installation issue.

g
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Old Jun 6, 2007 | 07:03 PM
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yap the green stuff works glue them bastards together lol
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Old Jun 6, 2007 | 07:32 PM
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Originally Posted by Ratchthed
Valve body seperator plate gaskets can definately cause improper clutch feed issues. Looks like you may be on to something there. I have not had great success with the Alto clutch setup you used in the photo. The steels are very thin and have a tendancy to cone when heating up... that in turn leds to the clutches binding which creates more heat. But thats my experience.

Use Borg Warner clutches, clean up those feed holes, use the return springs in the H/D-2 kit, air check it again then go for it. Good luck with it.

g

this is an interesting post.

i just lost 3rd and 4th.
been having issues with the trans shifting into 3rd for almost a month.
have had a humming (for a lack of a better word) noise from the trans since it was installed in feb..

im a little freakin pissed at the moment.

if im correct loosing 3/4 means clutches?
which inturn means the brand new verter is now contaminated......
sorry, not intended as a thread jack. related to the same type of issues the OP is stating.

grrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr!!!!!!!!! !!!!!!!!!!!!
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Old Jun 6, 2007 | 07:41 PM
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Thanks for everyones input!

Honestly - I have no idea what year my trans is. Its not the original - however it looks like the gaskets are the correct ones by matching them up.

I've heard good and bad about the clutch pack... although i heard good and bad about damn near everything.. lol
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Old Jun 7, 2007 | 09:30 AM
  #39  
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They appeared to be correct in my opinion, but hey I'm lookin' at a picture LOL.... look for 2 bolt holes in the plate that are the same size as the bolts, at the V.B. these holes will be narrow and appear slotted. Shift kits commonly refer to these as "Z" holes, install the 1st two bolts at these locations for proper gasket, plate, V.B. alignment. Don't tighten them, but get them in 1st then install the rest... none of those bolts should be more difficult than the others to thread, if any are then the assy is not properly aligned.

Good Luck.

g
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Old Jun 7, 2007 | 11:06 AM
  #40  
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Thanks man!
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