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Old 10-18-2005, 06:58 PM
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4l60e trans question

My original problem with my trans was I only had 1st, 4th and reverse. Took the trans apart found that the 3-4 clutches were burn. So I decide to rebuild the trans myself. Install the trans back in the truck and took it for a road test now I have a different problem. After the road test I noticed that I don't have 3rd or 4th gear. What else could the problem be all the clutches and seal are new and I air check the 3-4 clutches before I install the input assay back into trans

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Last edited by silm man; 10-18-2005 at 07:06 PM.
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Old 10-19-2005, 03:35 AM
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Quote:
Originally Posted by silm man
My original problem with my trans was I only had 1st, 4th and reverse. Took the trans apart found that the 3-4 clutches were burn. So I decide to rebuild the trans myself. Install the trans back in the truck and took it for a road test now I have a different problem. After the road test I noticed that I don't have 3rd or 4th gear. What else could the problem be all the clutches and seal are new and I air check the 3-4 clutches before I install the input assay back into trans
Did you do a line presure check???
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Old 10-20-2005, 04:05 AM
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When line pressure test is peform what will that tell youI don't understand that test. I think I found my problem not sure the 3-4 clutches could have 5,6or 7 plate there a possible that i left one out .Will this cause no 3-4 shift .

Last edited by silm man; 10-20-2005 at 04:11 AM.
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Old 10-20-2005, 06:58 AM
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Quote:
Originally Posted by silm man
When line pressure test is peform what will that tell youI don't understand that test. I think I found my problem not sure the 3-4 clutches could have 5,6or 7 plate there a possible that i left one out .Will this cause no 3-4 shift .
A low pressure check would indicate an internal leak? caused by possibly a torn or damage seal?? NO or low pressure= no clutch apply! as far as the question on whether or not you left out a clutch? a clearance check should have been done when it was assembled? Too tight=burned or binding clutches, too loose= no clutch apply or slipping?
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Old 10-20-2005, 06:30 PM
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the clearance for the 3-4 clutch pack should be .050 to .070.

If you did not verify this and there is TOO much clearance the clutch pack cannot apply & there will be no 3 or 4th gears
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Old 10-20-2005, 07:06 PM
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found the problem one of the 3 -4 clutches was'nt full seat in the input housing and was bend . My next question is clearance I did measure not sure if i did it rigth can someone explain how .
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Old 10-21-2005, 11:19 PM
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the clutch pack clearance is measured just like any other clearance.


perhaps a camparo to a engine valve / rocker arm clearance check would give you an idea of the process of checking clearance in the clutch pack
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Old 10-22-2005, 06:28 AM
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I give the guy an A for effort in trying to do it yourself! But it sure sounds like you at the least , need a book on rebuilding tranny`s? a Haynes would answer your question`s
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Old 10-22-2005, 07:51 AM
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Quote:
Originally Posted by ronb
I give the guy an A for effort in trying to do it yourself! But it sure sounds like you at the least , need a book on rebuilding tranny`s? a Haynes would answer your question`s

a book would be helpful since this appears to be a case of replacing parts in the tranny , not rebuilding it. There is a difference.

On the flip side , I have read on this board that there is no Voo Doo to rebuilding automatic trannys.
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Old 10-22-2005, 07:18 PM
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I have a book this is my first trans rebuild there was something that I did'nt understand . Took the trans apart again found that the tran kit that I order has performance clutches and the steels in the 3-4 clutch pack has a smaller thickness then the oem oneswhich requre you used more clutches. I remeasure the clutch pack clearance now I understand. Reinstall transmission now it shift into all the gears . Thank you
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Old 10-22-2005, 07:27 PM
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Quote:
Originally Posted by silm man
I have a book this is my first trans rebuild there was something that I did'nt understand . Took the trans apart again found that the tran kit that I order has performance clutches and the steels in the 3-4 clutch pack has a smaller thickness then the oem oneswhich requre you used more clutches. I remeasure the clutch pack clearance now I understand. Reinstall transmission now it shift into all the gears . Thank you

having a book helps.

You did not mention the year of the 4L60E ( or I did not see that) , If it is a PWM lock up system for the torque converter , you would ahead of the game to do add some TransGo parts to correct a PWM problem that 90% of the 60E trannys develop
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Old 10-23-2005, 11:50 AM
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1996 4l60e the transgo pwm kit is for 1997 and up and just install a new spring. .
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Old 10-23-2005, 03:10 PM
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Quote:
Originally Posted by silm man
1996 4l60e the transgo pwm kit is for 1997 and up and just install a new spring. .
1995 was the first year of the PWM lock up system in the 4L60E.

The current TransGo parts are a new valve and spring for the PWM system.

Early TransGo was a new valve and dual spring setup that re-used one of the OE valves.

IF you have a SRTA 4L60E v-body it will be stamped with SERV on it. Then you need a different kit from TransGo since the PWM bore will be larger from boring it out to repair the worn areas
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