400 transmission question????

[blazindorito]

I installed the transmission on my 83 k5. It was recently rebuilt. I filled it up with fluid and when I start the truck it leaks a lot of tranny oil from the top of the dipstick. It is not overfilled and was wondering what else may cause this? It does this everytime I start it but then stops after it's poured about 1/2 bottle of fluid. Thanks for your help!

 

[85-m1028]

did you rember to fill the converter with fluid before installing??

 

[blazindorito]

Yes. sir I did. It was filled before installing.

 

[t89blazer]

Did you fill the trans with the engine running. The only way you get a true reading on the dipstick is if the engine is running.

 

[blazindorito]

Yes the engine was running for about 15-20 minutes. It has done this for about 6-8 times already. once for every different day. I have not droven it yet. Had to finish fixing the rear and other things but I would turn it on just to keep the battery from draining. Everytime I would start it up it would leak like crazy from the top of the dipstick.

 

[t89blazer]

Do you remember how many quarts of fluid you put in the trans when you filled it up? If you filled the trans with the engine running I would check the breather on top of the trans to make sure that it is now clogged.

 

[fatbob]

Check the vent. And maybe try shifting through all the gears, to get any trapped air pockets out.
Good luck