I was talking to some service techs they all agreed. Are these units being used as Bull Dozer's??? Pushing skids??? Sounds like the clutch packs are being burnt out of them causing blackened oil. This would also cause premature wear on your pump and converter hub.

I have changed the cooling lines on a couple of these units and it didn't seem to make a difference. I have been looking at the troque converter and where the inside pump gear is driven by the converter it wheres a grove in the converted hub. This then allows the gear to twist on the hub and if you take a light and look between the converter hub and the gear it opens up an area large enough to let a lot of fluid through to the seal and I am thinking that this might be what is causing the seal to blow out. If I am right then the problem is what is causing the inner pump gear to wear a grove like this in the converter hub.

I have a couple of these units..............i have Never had a problem like that before................I am puzzled why the fluid is turning black so quick.........bad cooling lines to rad?????. I will make a few phone calls and see what i can dig up.

yes. Sorry about that. It is the torque converter seal.

Hello carl76, Can you please explain what front seal you are talking about, engine, hydraulic, transmission??????