D4 2t crankcase flush

Hi all! I got to work on my grandpas d4 some today. The tractor hasn't run in a long time and has gotten some water in the crankcase. What came out when I pulled the drain plug was pretty nasty looking. I filled the crankcase with 5 gallons of kerosene and used the pony engine to turn the main over. The kerosene did a nice job of flushing everything out.

The only thing that concerned me a little was that the kerosene would not pump up to the valves and the pressure never came up. I am hoping that this is just because the kerosene is mich thinner than oil. When looking through the inspection ports it looked like the main bearings were getting plenty of flow. I disconnected the line going up to the valves and had a little bit of flow there (see picture). I guess I will drain the kerosene out and put some fresh oil in and see what happens. [attachment=43080]IMG_2071.jpg[/attachment]

You should be good to go with oil.

Might be worthwhile to pull valve cover off and check for oiling in the rockers. I would pour a quart over everything before you start. Make sure plenty goes down the pushrods onto the lifters and camshaft lobes. You can check valve clearance roughly by shaking all the rockers making sure none of them have excessive clearance from sticking valves.

[quote="ccjersey"]You should be good to go with oil.

Might be worthwhile to pull valve cover off and check for oiling in the rockers. I would pour a quart over everything before you start. Make sure plenty goes down the pushrods onto the lifters and camshaft lobes. You can check valve clearance roughly by shaking all the rockers making sure none of them have excessive clearance from sticking valves.[/quote]


I had the valve cover off. That is how I know it wasn't getting anything to the valves. I probably should have put some oil on everything up there, but I didn't turn it much and certainly didn't try to start it.