ATF leak

[kdoske]

Ok so my truck just got shipped up to AK. When it got here I drove it around to make sure all was well after shipment. Well after the drive I noticed ATF dripping out of my 205's breather. The 205 is new to the truck. I didn't replace the 205's input seal when I installed it. You guys think that's all it is or you think my 4L80E may be giving me some problems?

Besides the new 205 input seal is there anything else I should be doing?

 

[wheels87k5]

Have you checked the fluid level? I know you said it's new, but can fluid from the tranny be getting to the case?

This happened to me with a 208 and 700r4.

 

[kdoske]

Have you checked the fluid level? I know you said it's new, but can fluid from the tranny be getting to the case?

This happened to me with a 208 and 700r4.

Oh it's definatly coming from the transmission since ATF is coming out of the 205 breather. The breather is above the 205s fill location. When it happened with you was it just your transfer cases input seal?

I'm just wondering if maybe my transmission might be over pressurizing or something. I'm also wondering if there is anything else I should be replacing or doing, besides the input seal, from stopping the ATF from getting in the 205. As far as I know the transmission output shaft and 205's input shaft just slide on to each other right? Am I missing some other step?

 

[496truck]

In the tail end of the trans there is no pressurized fluid back there. My guess is that the transport had the front end tilted higher than the rear for the whole ride up. A bad input seal at the front of the 205 would let sitting fluid leak past and get into the 205. On that same note, it could also let the ATF/gear oil mix from the 205 back into the trans. I would change out the fluid or have the trans flushed asap. The auto trans don't like gear oil in them.

On a similar situation, at Volvo, we've had XC90s come in with ATF in the CV joints. A little cap in the center of the inner CV would let go and allow ATF to get into the CV joint/boot, then get mixed really well and make way back into the trans. In some cases we were able to flush the trans, others we had to replace the trans because of the contamination. It was real funny when the outer CV cap let go and would let the outer joint grease leak out the center cap of the wheel. Customers would come in saying there hubcap fluid was leaking.

 

[kdoske]

In the tail end of the trans there is no pressurized fluid back there. My guess is that the transport had the front end tilted higher than the rear for the whole ride up. A bad input seal at the front of the 205 would let sitting fluid leak past and get into the 205. On that same note, it could also let the ATF/gear oil mix from the 205 back into the trans. I would change out the fluid or have the trans flushed asap. The auto trans don't like gear oil in them.

On a similar situation, at Volvo, we've had XC90s come in with ATF in the CV joints. A little cap in the center of the inner CV would let go and allow ATF to get into the CV joint/boot, then get mixed really well and make way back into the trans. In some cases we were able to flush the trans, others we had to replace the trans because of the contamination. It was real funny when the outer CV cap let go and would let the outer joint grease leak out the center cap of the wheel. Customers would come in saying there hubcap fluid was leaking.

Cool thanks for the response. I'm definitely not as worried as I was. I think I'll just pull the 205 and rebuild the whole thing.

I actually used ATF in the 205. I know it reduces the 205's life and what not but I really didn't want to risk getting gear oil in my 4l80e. Much cheaper to rebuild/replace the 205.