Kalamazoo 9AD vs 9AW?

[930dreamer]

Does anyone know the difference between these two models. My 9AD counterweight is cracked in many places and I found a 9AW on MP. I see the 9AW has a coolant tray.

 

[cvairwerks]

I would suspect the D is for Dry and the W for Wet.

 

[930dreamer]

I would suspect the D is for Dry and the W for Wet.

That makes sense, I'll get this running and evaluate it's operation. Glad I took a bunch of pictures while disassembling.