case 509 HELP

henry J

New User
I have had a failure of my American bosch PSB injector pump. How have other people resolved a failed hyd head on these units. Has a inline pump been used? This machine uses the same parts as the 500 series tractor. I don't want to reinvent the wheel to make this work again.Henry
 
Inline pump from a 900B, or 930 will fit right on. I do think you will need the adapter in front of the pump and all the injector lines. I have heard they dyno better with an inline pump.
 
Are you sure your getting fuel pressure to the inj pump? What have you done so far, and what is the motor used for? Those PSB pumps can still be resealed. I have an extra PSB pump that came off a 900 that I will probably never use. I've been running those 509 motors for irrigation motors for years.
 
Yes I have fuel pressure to the pump. I have only a trace of fuel out of the pump line connectors. the center cap on the head when loosened will pour fuel also sends it out the line connectors while cranking engine over. This engine just quit running. I use it on a head saw for a sawmill.
 
Did you take the rectangle shaped cover just below the head off and make sure the fuel rod and lever move forward and back when you move the throttle? If it works ok send me an email, or call,4022766136.
 

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