Slipping trans after rebuild.

[NickTransmissions]

@NickTransmissions I took apart the pump and cleaned everything. Recalibrated my setup and put in the sonnax valve. Now all my readings are super low. Could it be possible taking the pump part did this? And all the circuits quit like that enough though the truck drove great before the first assembly in 1 and 2?

Shouldnt be low. Take a picture of you doing these tests, each valve, and post them here (or shoot a video of you performing the test on each valve and upload to youtube then reply with the link).

Sounds like you're not doing something right, either with the testing or somethings not installed correctly. Rewatch my videos if you arent certain what you may be doing incorrectly.

 

[BradHanks15]

I tried it again in a different way and all the vacuum checks out again.

 

[BradHanks15]

@NickTransmissions took apart the input sprag and everything looked ok. I will do the things you suggested. Tested the afl valve it was about 17 and the tcc regulator was about 18.

 

[NickTransmissions]

@NickTransmissions took apart the input sprag and everything looked ok. I will do the things you suggested. Tested the afl valve it was about 17 and the tcc regulator was about 18.

Those values are solid, Brad.

 

[BradHanks15]

Also do you think if the forward accumulator check ball fell out of its spot it could cause that?

 

[BradHanks15]

Those values are solid, Brad.

Sweet. Appreciate that. Gonna check the front pump one more time. If everything checks out you think I should replace the input drum? @NickTransmissions

 

[BradHanks15]

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[BradHanks15]

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@NickTransmissions I think I actually got my set up to work this time. Do these numbers look normal? This is on the pump.

 

[NickTransmissions]

@NickTransmissions I think I actually got my set up to work this time. Do these numbers look normal? This is on the pump.

Assuming test equipment is calibrated, working correctly and testing performed correctly, then yes - those look good (the Sonnax boost valve should be showing 23-25 in Hg but 21 is not a problem).

 

[BradHanks15]

Assuming test equipment is calibrated, working correctly and testing performed correctly, then yes - those look good (the Sonnax boost valve should be showing 23-25 in Hg but 21 is not a problem).

@NickTransmissions. Cool. Definitely appreciate the help. Will definitely go ahead and get the input sprag and drum get those replaced and see how it goes. I’ll let you know when everything is back together. I’ll make sure to check line pressure first this time before taking it off the stands.