Trasmission leak

[mattman4x4]

Hi all,
I am kind of a new guy to working on his own truck, and I have transmission leak from the filler tube. How do I replace the tube, and is it something that I can get form the local parts store?

K20 truck with 350 and TH350


thanks for the help!

 

[chalet2506]

Have you tried tapping on it to make sure it's in good?

 

[goldwing2000]

You don't have to replace the whole tube (unless it's cracked or something), just the o-ring at the bottom.

If you do have to replace the tube, most parts stores have chrome tubes for TH350 in stock. There's a bracket that goes from the tube to one of the bell housing bolts.
Remove bolt, pull out tube, insert new tube, reinstall bolt, top off the fluid.

 

[mattman4x4]

Yes I tried tapping on it and it appears to be leaking at the bend and bracket, near the bell housing. when I add fluid it runs out and onto the bell housing and down onto the drive shaft, and ground.
thanks Matt

 

[goldwing2000]

Sounds like the weld popped on the bracket and ripped the tube. You can either replace it or (if money is tight) just re-weld it.

 

[sweetk30]

you might just find out how well that chrome junk works. i would find one from a tranny shop old stock or junk yard origanal.

best way to seal oring style is drain fluid below tube to case point. then all clean and dry . new oring and tube of black rtv. install tube to case and then nice bead of rtv all around tube at case. let cure 3-4 hours and then full tranny to level.