Slipping trans after rebuild.

[NickTransmissions]

@NickTransmissions makes sense. Super weird. I bought a kit made for a 03 4l60. So not sure why the thinner steels were in there. Oh well ig for sure.

What kit did you buy?
Reply with a link to the kit.

 

[BradHanks15]

Thanks again btw.

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@NickTransmissions

 

[BradHanks15]

@NickTransmissions I am putting air to this hole but the 3-4s don’t seems to be moving. What could cause that?

 

[BradHanks15]

@NickTransmissions I am putting air to this hole but the 3-4s don’t seems to be moving. What could cause that?

Just seems to be moving the forward piston. Testing the hole on the input drum outside of the pump moves the 3-4 just fine.

 

[NickTransmissions]

Just seems to be moving the forward piston. Testing the hole on the input drum outside of the pump moves the 3-4 just fine.

Check your input shaft sealing rings...If you have already checked them and they're fine, you'll need to dig into it a bit further to see what the problem is.

 

[BradHanks15]

@NickTransmissions theyve been replaced and look ok. All the other circuits are working. Where would you recommend looking?

 

[BradHanks15]

If I apply pressure to the two holes on the pump with the input drum removed I can feel air out of two different holes. The 34 hole I can feel on the higher hole on the inside of the reverse input drum. In the forward I can feel on the lower hole of the reverse input drum.

 

[BradHanks15]

If I apply pressure to the two holes on the pump with the input drum removed I can feel air out of two different holes. The 34 hole I can feel on the higher hole on the inside of the reverse input drum. In the forward I can feel on the lower hole of the reverse input drum.

I may have not had the input drum fully splined into the reverse drum, idk if that could cause that issue.

 

[NickTransmissions]

I may have not had the input drum fully splined into the reverse drum, idk if that could cause that issue.

Likely the problem. 2-3 Feed hole in the stator was misaligned to the one on the shaft. Let me know if fully seating the rev drum resolved the problem.

 

[BradHanks15]

Sounds good. Appreciate it. I ripped a Teflon seal on the way out so I’ll need to replace that. I’ll let you know after.