SERVICE MANUALCLEANING AND INSPECTIONSection 3CLEANING AND INSPECTIONA thorough cleaning and inspection of all parts isimportant for the injection pump and governor assembly.Each machined surface should be cleaned of all oldgasket material and wash all parts in clean fuel oil orcalibrating oil.When inspecting for damage or wear, it is a goodpractice to replace any part that is questionable.PartInspect For Following Condition(s)Corrective Action When RequiredInjection PumpCracks, chips, evidence of overtorqueIf damaged, replaceHousingor stripping of screw threads, damagein roller tappet bores.Damaged camshaft bearing located inIf damaged, replace bearing as follows:front bearing retainer and bearings on1.Remove governor housing fromcamshaft.pump housing (Governor Disas-sembly, step 13, section 2, page8).2.Remove gasket material fromgovernor and pump housings.3.Obtain new gasket and installgovernor housing onto pumphousing. Apply Loctite to mount-ing screws to secure.4.Remove and replace bearing infront bearing retainer.5.Remove and replace bearing oncamshaft.Leak at fuel gallery closing plug.If known to be leaking, replace pumphousing.CamshaftDeep wear or grooving on cams orReplace camshaft (with camshaft re-bearing surfaces.placement, bearing must also be re-placed). IMPORTANT: See Page 4,this section.Roller TappetsPressure marks or grooving.Slight marks or grooving - smoothout with polishing cloth. More ser-ious wear - replace parts.Spring SeatsWorn or bent.Replace seatsSpringsBroken or rust coated.Replace springs.Barrels and PlungersDamage (scratches, scoring, etc.) onReplace barrel and plungerlapped surfaces of plunger. SeeNOTE*Control SleevesDamageIf damaged, replace*NOTE: Test the set by washing out with test oil and pulling plunger part way out of barrel. It must fall back slowly by itsown weight.CGES-375Printed in United States of AmericaPage 1
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