SERVICE MANUALROBERT BOSCH MODEL MW INJECTION PUMPSection 1118. After replacing fuel injection pump or replacing fuelsupply lines, prime fuel system using theseprocedures:a.Loosen all six high pressure fuel lines at nozzleend.b.Loosen hand priming pump handle.c.Operate priming pump until pump actionbecomes solid (harder to pump).d.Position injection pump shutoff lever in runposition with electric shutoff or mechanical cable.e.Crank engine for fifteen seconds.f.Operate priming pump until pump actionbecomes solid. Tighten priming pump handlesecurely.g.Crank engine for fifteen seconds and observefuel/air leakage at each nozzle/ fuel pipeconnector. When fuel flows from each nozzleconnector, tighten connector.h.Start engine and operate until engine runssmoothly.REPLACING INJECTION PUMPMOUNTING ADAPTER GASKETThe same procedures required to replace injection pumpshould be followed to replace mounting adapter gasket(Figure 26).If a severe oil leak exists between mounting adapter andinjection pump housing, injection pump must be removedand repaired. Timing pointer and injection pump hubrelationship will be changed if mounting adapter toinjection pump housing nuts are loosened.IMPORTANTDO NOT LOOSEN INJECTION PUMP TO MOUNTINGADAPTER NUTS BECAUSE INJECTION PUMPTIMING POINTER AND HUB RELATIONSHIP WILL BECHANGED.Figure 26. - Mounting Adapter and Gasket LocationCGES-185-3PRINTED IN UNITED STATES OF AMERICAPage 20
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