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826D

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Icuby

Member
Customer had this on a tractor drive-ride,got home with it and let it idle a while,and it just died. Would not start again,changed fuel filters,got fuel to pump but not to injecters. Static timeing is correct. Very low hrs on pump rebuild w/$1500.00 spent at Diesel pump-injecter shop.
What could have taken place here?
 
I would say that she twisted something and now the rotor is not turning Sure hope he did not take a garden hose to it to wash it off while it was still hot . So it looks like a trip back to the injection shop is in order .
 
Doesn't sound good. You can take the plug out of the center of the head on the pump and observe the plunger, and it should go back and forth and around and around while cranking engine.
 
Not unusual to put that much in one of those Bosch rotary injection pumps as the parts are really difficult to come up with and spendy. I have an old pump head I replaced years ago I just keep for a souvenir , paper weight. Reason I replaced it was due to irregular governor action. They have a steel ball check valve that is, or at least was at that time not a service item, and it was leaking causing erratic governor action. It is a hydraulic governor that uses helix on throttle valve to control rate of leak off of control pressure fuel and if that check valve leaks it allows too much fuel to leak back and then engine speed changes so has to correct itself. Really a weird setup but it does work. Later on, they went to a mechanical governor, more conventional but I never needed to get inside of one of them.
 
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