old-iron-habit
Senior Member
- Joined
- Nov 22, 2012
- Messages
- 4,233
- Location
- Moose Lake, MN
- Occupation
- Retired Cons't. Supt./Hospitals
Today I a friend and I went to help a fellow try to start a 6 cylinder JD power unit on his slasher that had shut down while idling. Serial number is RTO6068D52173. No model number on the engine that we could find. He said the engine sounded like it had run out of fuel so he added fuel and installed a new fuel filling it first. He noted that the old filter was still full of fuel when he removed it. Of course he told us that late today after all else failed. He never could get it to start. Today we tried the following steps. First we opened the bleeder on the filter and pumped the hand lever on the primary engine driven pump. Fuel flowed out on the first stroke so the filter was full of fuel. We then opened the incoming fuel line at the injector pump and hand pumped fuel to there. We then cranked it over and cracked three injector lines to bleed. We never got anywhere. It will fire instantly on a sip of ether. It has a low oil shut off and a electric solonoid on the injector pump. To eliminate and chance of the low oil pressure sensor being bad we connected a 12 volt "hot" wire to the injector pump solonoid and could hear it click. Still no fuel, just a constant wisp of smoke. We opened the bleeder again at the filter and spun the engine over. Fuel flowed out put not under enough pressure to speak of. It just ran out without any pressure but it seemed to be plenty of fuel to run on. Is the primary diaphragm pump supposed to supply a certain amount of pressure to the injector pump for it to work. I have not had to work on a JD before so at a lost. Thanks in advance.
Picture of pump and controls.
There is a tiny black button switch that pulls in or out on the control panel that I think might be the oil pressure bypass, but no fuel in either position. I think it should require power to the pump solonoid to run, please correct me if I'm wrong.
Picture of pump and controls.
There is a tiny black button switch that pulls in or out on the control panel that I think might be the oil pressure bypass, but no fuel in either position. I think it should require power to the pump solonoid to run, please correct me if I'm wrong.