07 KW T800 Leaking Water Out the Bell Housing

I pulled into the job this morning ready to load and haul dirt for the day. While outside on the ground I noticed water pouring out the bell housing right where you grease the thro out bearing.
Does anyone have any idea what this might be?
I had actually noticed very small amounts leaking each day last week when parked.

This truck has a Cat C-13 and an Eaton fuller 8 LL Tranny.

I put about 3 gallons of water in it and trucked it back to the shop. Luckily I wasn't too far away.

 

Thanks for the reply! Its definitely not coming from the top back of the engine. Its pouring strait out the bell housing inspection opening.
I'll check the Trans fluid level next.

 

We found the problem. Turns out there's a 2x12 inch pipe like water cooling chamber on the outside of the transmission.
Oil from the transmission is pumped through a coil inside that chamber. The coil inside has corroded and letting water into the transmission.
I suppose you could loop the water line together and cap the lines from the transmission to get on down the road? Its Pricey! Its the Perterbilt Heat Exchanger Kit. $454.27
Search results for: 'heat exchanger kit'

 

Whats the best way to clean the transmission? I was thinking fill it back up with the correct oil, run it a bit and change it.

 

I drained the tranny and filled it back up with 90 wt gear oil after installing the new oil cooler. I ran it all day today and If its milky I'm gonna change the oil again after I run it a few days.
I had to flush the radiator good as well I got about 1 gallon of oily sledge out of it.
So far so good!