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Old 11-08-2017, 03:54 PM   #1
Blue12valve

Name: Blue12valve
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47RH air testing and teardown inspection

Hey guys,

I have 47rh that I rebuilt myself that is having some issues. I installed alta red clutches, replaced all seals/ gaskets, billet servos, Goerend valve body and triple disc converter and replaced the cooler. The rebuilt transmission worked awesome for about 3k miles. I did a helacious burnout and it started shifting strange from that point on. It would fall out of gear randomly while driving, free revving like it was in nuetral until I stopped, shut the truck off and restarted, all gears are back and shifting well after restarting. Very strange. I checked the fluid level, it was full and was not burned. There are no external trans fluid leaks on the transmission. I think it has a serious hydrolic leak inside, have a hard time believing the pump stopped producing but I guess anything is possible.

Fast forward, I pulled the 47rh out and put an nv5600 in itís place. Now I have this expensive paper weight that I would like to try and fix but I dont wanít to just throw a seal kit at it, I want to find the leak or other issue in trans first. Aside from air testing the different passages in the transmission, is there anyway I can inspect/ test the pump with the transmission out of the truck? Is there anyway to test the govornor as well? What else should I look at besides torn or rolled seals? Thanks for any help!
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Old 11-08-2017, 03:55 PM   #2
Kryp2nitE

Name: Kryp2nitE
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What gear were you in when you did said burnout? Manual 1st?


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Old 11-08-2017, 04:42 PM   #3
Blue12valve

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Quote:
Originally Posted by Kryp2nitE View Post
What gear were you in when you did said burnout? Manual 1st?


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I was in manual 1st while doing the burnout.....
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Old 11-09-2017, 01:52 PM   #4
CowboyEdition
 
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Name: CowboyEdition
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It would have been good to do the pressure checks before you pulled it. All you can do now is completely disassemble and inspect all parts and seals.

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Old 11-11-2017, 03:38 PM   #5
SCHMITTY
 
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Yup. Pressure checks would have been better than air testing. I air test before install
Just to see if here is any major problems. Not as accurate as a fluid pressure test though.

I've had a 1-2 shift timing valve issue before that would let it slip in all forward gears unless I was in lockup. Maybe you hurt your forward clutch pack. Did you go from the 1st gear burn out and shift it into manual 2nd or drive ?
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