ME 6115-545-34/14-24Figure 14-24. Variable speed droop adjustment14-48. Fuel Injection Pump, Bench Test.a.The following bench test procedure is based onthe following conditions.(1) Injectionlines.Two standard line sizes;1/16 inch I. D, by 20 riches and 3/32 inch I.D. by 20inches long.(2) Fuel. The readings are based on fuel with aviscosity of 34-36 SSU at 100° F.(3) FuelTemperature.110-115° F.(4) Nozzles: part number 12SD12 adjusted to anopening pressure of 2500 psi (175 ATS).b.Use diesel injector pump test stand and pro-ceed as follows(1) Mount the pump securely with a suitableadapter. A drive adapter, usually with a ball bear-ing, supports the shaft.This pump must be testedusing an intermediate support bearing. Install highpressure injection lines using new gaskets. Leavefuel line connector screws at pump and injectionline nuts at nozzles loose. Install inlet and returnlines and transfer pump pressure gauge. Use a re-striction fitting on the return line. The pump comeswith one installed.(2) Set counter and tachometer switches toclockwise position.Remember that the test standtachometer registers pump speed.14-53
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