Filling in the blanks . . . dozer pushes downhill great, on the flat great, it just plain screams when I open it up and have my ear plugs in so it doesn't hurt my ears, but when headed up hill more than about 15-30 degrees incline for more than about 15 minutes she starts to lose power, then sputter and the governor starts revving the engine due to rpm loss. Power is lost then it dies and I am back to the bleeding routine after I get the tank higher again or pressurize the tank after removing and plugging the return line.
Racecarl, the return line is clear. I am not sure what injector pump it has. It is a 78 4cylinder diesel D 239 made in Neuss Germany. Rated at 67HP@2200 rpm / 80HP@2300 rpm, this motor was made from 67 to 97 (the web is a cool place to find info)
I am sure the present injector pump "sucks" the fuel from the tank because at one time the fitting on the inlet of the filters was loose and it ran terrible till I found it. It must have been drawing a stream of bubbles in at that location. If there was a pump in the tank, that fitting would have been dripping fuel, instead it was dry as a bone and no dust collecting on it like would collect on a loose pressurized fitting.
I'll give the dealer a call just for peace of mind, but I am already planning on putting the pump in under the seat. I'll connect it up with the oil pressure switch in parallel with the ether injection button(not used anyway) so that I can bleed the system easy enough without butchering the dash with another hole for another switch.
I'll report back Saturday or Sunday with results.
[ 12-28-2001: Message edited by: Ken ]
