CHAPTER 6REPAIR INSTRUCTIONSSection I. PUMP AND INTERMEDIATE COUPLING6-1. Generalengine crankshaft and coupling head to preventThe pump is coupled to the engine by an in-fluid from leaking around the rotating shaft.termediate coupling. One side of the coupling boltsto the engine; the pump housing bolts to the op-posite side. The pump impeller is threaded andscrews directly to the engine crankshaft. Impeller- 6-2.to-wear plate clearance is regulated by gaskets anda.NOTEEvidence of leakage between the intermediatecoupling and engine will indicate a defective seal.Pump and Intermediate CouplingDisassembly. Refer to figure 6-1 and removeshims. A seal assembly is installed between thepump housing.Figure 6-1. Pump housing removal.6-1
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