The place I work at has two of these machines. Previous maintenance was at best nonexistent, air filters were plugged with dust and oil needed changed and of course no grease on anything.

So all that changed and then one of the machines started throwing oil on the exhaust. While under the machine I could not tell if the front crank seal was throwing the oil so I pulled the dampener while machine was on the ground and wheels were turned. As I tried to pull the bolts on the crank pully the engine rotated very easy so I used an electric impact. I made a puller and pulled the dampener and found that it was the pan gasket seal.

This tells me that the crank case is pressurized by blowby and the intake is not reliving that pressure So, so I vented the crankcase to atmosphere and plugged off intake. Currently I am waiting for the front crank seal so I haven't started the machine yet.

Question: Do you think this will work?

Oh and another thing. For months every day this machine would take a quart a day so I know this pan gasket leak was responsible for that quart a day and the reason it started throwing oil was because of pressurization.