Water pump question

[engineer233]

I have a M923 with a NHC-250. The water pump has a grease fitting on it. I had a moment of stupid hit me while I was greasing the truck and greased it without first checking what grease to put in it. A few days later found the antifreese was milky . Could the grease have gotten into the into the water and caused this ?

 

[DAS]

How much grease did you pump into it......only needs a little,like one pump with a hand unit.......theres a spring loaded cerramic seal in there to keep the water out of the bearing......DAS

 

[doghead]

I'd guess your oil cooler is bad.

 

[Barron]

Check the oil in the tranny and see if it's contaminated. if it is you're gonna have a bad tranny soon.

 

[timntrucks]

trans?? he is talking about his engine.

 

[Barron]

Depending on age and condition, the heat exchanger, or oil cooler for the transmission oil can develop a leak, and transfer small amounts of transmission oil into the coolant, or vice versa. Antifreeze wrecks Allison transmissions.

 

[WillWagner]

Is it white or grey/black...the color of the engine oil. Fuel in the oil turns white.

 

[engineer233]

I checked the tranny and the crankcase oil and they appeared normal . While reinstalling a radiator hose the residue in the hose was the same dark color of the grease. I gave it maybe 4 pumps from a hand unit. I first thought oil cooler then I remembered doing this stupid stunt of maybe putting too much grease in the pump. I'm going to flush it out later today and run it some more. I will definitely keep a close check on the tranny and the crankcase in the meantime while waiting to see if it does this again. I hope this is the problem and not an expensive oil or tranny cooler.