POWERTECH™ 2.9 L OEM Diesel Engines - John Deere Industrial ...

Service As RequiredBleeding The Fuel SystemCAUTION: Escaping fluid under pressure canpenetrate the skin causing serious injury.Relieve pressure before disconnecting fuel orother lines. Tighten all connections beforeapplying pressure. Keep hands and body awayfrom pinholes and nozzles which eject fluidsunder high pressure. Use a piece of cardboardor paper to search for leaks. Do not use yourhand.If ANY fluid is injected into the skin, it must besurgically removed within a few hours by adoctor familiar with this type injury or gangrenemay result. Doctors unfamiliar with this type ofinjury may call the Deere & Company MedicalDepartment in Moline, Illinois, or otherknowledgeable medical source.IMPORTANT: Do not operate the engine at highspeeds or full loads just beforebleeding the fuel system as this maycause fuel injection pump failure.Keep Skin Away from High Pressure FluidsRG11544 –UN–01DEC00X9811 –UN–23AUG88Bleed the fuel system anytime the fuel system has beenopened up. This includes:Fuel Filter Air Bleed Vent Screw• After fuel filter changes.• After pump or nozzle replacement.• Anytime fuel lines have been disconnected.• After engine has run out of fuel.Bleed the fuel system using the following procedure:1. Loosen the air bleed vent screw (A) two full turns.2. On mechanical supply pumps, operate supply pumpprimer lever (B) until fuel flow is free from air bubbles.Fuel Supply Pump Primer LeverRG11545 –UN–01DEC003. On electric supply pumps, turn key switch to “ON”position until fuel flow is free from air bubbles.A—Vent ScrewB—Primer Lever4. Tighten bleed plug securely by hand. Continueoperating hand primer until pumping action is not felt.When finished, pull hand primer outward (away fromengine) as far as it will go.Continued on next pageRG,RG34710,5084–19–13FEB03–1/445-3 060106PN=107