Well I managed to break the knob off the air bleed valve on injecton pump of the Diesel D750. I had read the procedure in the manual and while I had the cab up I though I'd check how it worked. When I tried to turn the knob by hand it wouldn't move, I tried left and right, wouldn't budge. So I figured I'd use a small pliers to improve my grip and add a bit of leverage. I tried left first. I'm pretty cautious with small parts, but I snapped the knob off the valve like it was brass, well it is brass. So I went to the big diesel rebuilder/kuboto dealer with a picture and the serial number of the D750. I had previously bought a water pump from these guys, but now they can't find a parts diagram for this engine on their computer. The guy calls over to the mainland to the Kuboto people and they said the D750 was special to bobcat and that's why it wasn't on the computer. The guy sent me away telling me to find the tag on the injector pump and maybe they could find the part that way. At least he was trying to help me. BTW, I've never found any tag on the injector pump. So I figured I'd try one of the marine engine dealers/rebuilders.I take the knob and picture to this small marine engine shop, and there are three kuboto engine on the show room floor and every one of them have the same air bleed valve on the injector pump. I show the guy the picture and point to the engines in the show room. He doesn't chect his computer or parts book, he just walks back to his parts room and pull out a new valve. I ask why these things break, and he tells me people leave them wide open and then when you go to open it you break it, he said he's done it himself. It's refreshing to go somewhere looking for a part and have someone know what your asking for and actually have it on the shelf.
