Posted by Chris Case [172.70.214.202] on Monday, February 20, 2023 at 15:54:52 :
In Reply to: lifting the cab off the frame posted by Karl [108.162.216.142] on Saturday, February 18, 2023 at 16:54:42 :
The crank case needs to be vented or pressure builds and pushes oil out past the seals.
The oil fill cap is usally stuffed full of horse hair to act as a filter on the inlet side. Outlet is either a road draft tube or the PCV valve system.