(quoted from post at 12:14:58 11/11/17)
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I presume engine is diesel powered. If that's correct what type inj pump? My 1st guess is fuel return line check valve at IP is clogged.
(quoted from post at 13:48:27 11/11/17) My 5040 has a CAV DPA pump. Mine does not
have a check valve in the return. There is
a small filter in the pump under the feed
line that you may need to check.
(quoted from post at 14:34:00 11/11/17) Next time it happens loosen the return line
to relieve any pressure in case your pump
does have a plugged check valve and see if
it will run. I've got a different tractor
that I have to keep at least a half tank of
fuel in or the feed pump cannot supply
enough fuel to the injector pump or it will
get air in the fuel system.
Dieseltech, I think you might be on to something here, right now it's dark so I can't check it immediately. My fuel system looks a lot like the diagram at http://www.importtractorparts.net/3cylfuelsystem.html.(quoted from post at 15:18:50 11/11/17) If I recall that fuel system has a constant air bleed fitting on top of a filter base like Perkins uses. It's there to bleed any trapped air from the filter assembly. When the small orifice gets plugged, any trapped air will go to the injection pump and cause immediate shutdown. Engine will then need air bled to get started. Look for a banjo type fitting that has a small line that either goes across the injector top bleed line, or goes straight back to the tank. The bleed orifice is in the side of the bolt, or if no banjo might be a straight orifice fitting with a small line on top. Remove the line and work the hand primer, fuel should come out. Also be aware if NAPA/WIX brand filters are used, make sure the filter top outer groove has NO O ring in it, that's the fuel inlet passage on that style filter. An extra O ring there WILL restrict or shut off fuel flow completely. Have seen that mistake made often in over forty years diesel injection repair.
Thanks for response, will try that first thing in morning.. I sincerely appreciate your help and suggestion. Do you have any idea what a rebuilt injection pump might cost, or where I could get mine rebuilt IF NECESSARY ??(quoted from post at 18:55:15 11/11/17) Yes, the line to the thermostart reservoir usually is the filter bleed line, fills the reservoir, then overflow is returned to the main tank.
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