Waterpump on a CAT

No water pump is designed to leak a little. Who ever told you that is a fool.

 

As per Caterpillar guide lines,


The water pump is designed to weep. The weep is necessary for lubrication of the seal face. The filter absorbs coolant for an increased rate of evaporation. When the filter becomes saturated with coolant, the coolant in the filter may seep to the evaporation chamber. When the evaporation chamber is full of coolant, the coolant may spill into the cup plug. Coolant may be observed at the vent hole in the cup plug. When debris enters the seal face, weep may increase. The increased weep is only temporary. A stain or moisture on the pump housing is not indicative of pump failure. The pump should only be replaced when there is pooling of the coolant on the ground.

 

So Caterpillar is the fool who told him that, and built a leaky water pump. LOL

 

If you ask Cat a turbo that puts oil into the intake is just taking it out of the air.
The seal leak is not a good sign if you can see the coolant it is excessive.
If you do not have a water filter when you change the pump add one, it will clean the grit from the system and the pump will last a lot longer. If you are doing it yourself, and have been using DCA4 I would buy a cover plate as it will be eaten away. Remove the Water Pump outlet to the cooler and change the two "O" rings and If any of the cores are plugged clean them I have a reducer with a #6 plastic hose I use off the shop vacuum.
Just a thought!

 

I should have put "weep" instead of "leak". I work on CAT engines everyday so I know what I'm talking bout. You stick to driving and I'll stick to turning wrenches.

 

Well thought out, friendly advice...