[AT] Case diesel

[john hall]

Case diesel guys--I need some help!

I'm working on a Case 431 (I think) tractor with a Roosa Master model DB fuel injector pump. According to the service manual it is a 188 series engine. The owner changed the fuel filter (aftermarket) and now it won't run. It will crank on starting fluid (we are not using the glow plugs, he never has in the 17 years he has owned it) but that is it. I am assuming an air-lock. There is a good supply of fuel going to the filter. When I open the supply line at the pump there appears to be a reasonable supply of fuel there also. I can't figure out where to bleed the pump itself. He has a Case IH service manual and it mentions nothing about bleeding the fuel system other than at the filter. I've checked and have nothing coming out of the bypass line from the pump to the tank. I have noticed a pretty substantial leak around the throttle shaft on the pump, wouldn't that indicate its pumping? Any ideas?

John Hall