Servicedatasheet - PMCCatalogue

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Model 70122Start-up ProcedureWhen initially starting a rebuilt load sensing system,it is extremely important that the start-up procedurebe followed. It prevents the chance of damaging thepump which might occur if the system was notproperly purged with oil before start-up.1 After the pump has been properly installed ontothe machine and all hydraulic connections have beenmade, check all fittings to make sure that they aretight.2 Fill the pump housing at least 1/2 full withsystem oil that has been filtered through a 10 micronfilter.3 Fill the reservoir with an approved oil that hasbeen filtered through a 10 micron filter. Leave thefiller cap loose as a means of air that is trapped in thesystem.4 Note on gasoline or L.P. engines: remove the coilwire and turn the engine over for 15 seconds. Dieselengines: shut off the fuel flow to the injectors andturn the engine over for 15 seconds. This procedureenables the pump to pick-up the oil before start-up.At this time disconnect the sensor line from thepump compensator and pull one of the valve spoolswhile the engine is being turned over. This allows oilto flow through the sensor line, thus, removing anyair in the sensor line. Reconnect the sensor line aftera steady flow of oil is coming from the line.5 Replace the coil wire or return the fuel flow to theinjectors and start the engine. Run at low idle speedfor one minute. The pump should immediately pickup oil and go into low pressure standby. If there is noindication of fill in 30 seconds, stop engine anddetermine the cause.6 After the pump has stabilized in low pressurestandby, operate the control valve and steering, if thesystem is equipped with one, to purge the system ofair and to fill the cylinders with oil. Continueoperating the system slowly with no load until itresponds fully.7 Check fluid level at the reservoir and refill ifnecessary to the proper level at the reservoir andrefill if necessary to the proper level with anapproved filtered oil.8 Check all line connections for leaks tighten ifnecessary.9 The machine is now ready to be put intooperation.10 Short hour filter changes are recommended forthe first two changes after placing the machine backinto operation. The first filter would be changed in 3-5 hours and the second at approximately 50 hours.Routine scheduled filter changes are recommendedfor maximum life of hydraulic system.16
Model 70122Fault - LogicTroubleshootingThis fault - logic troubleshooting guide is adiagnostic aid in locating pump problems.Match the pump systems with the problemstatements and follow the action steps shown in thebox diagrams. This will give expedient aid incorrecting minor problems eliminating unnecessarymachine down time.Following the fault - logic diagrams are diagramaction comments of the action steps shown in thediagrams. Where applicable, the comment number ofthe statement appears in the action block of thediagrams.ExplanatoryDiagramCommentNumberDecisionSolutionSymptom:1Inspect?DefectiveRepairorReplaceActionStepRecommended Gauge LocationsTest PortInlet Vacuum - LH. RotationSystem Pressure - RH. RotationLoad Sensing PortTee in Line to CheckLoad Sensing PressureTest PortSystem Pressure - LH. RotationInlet Vacuum - RH. RotationDrain PortTee in Line to CheckCase PressureGauges RecommendedInlet vacuum gauge: 2 bar to 1 bar [30 PSI to 30 inHg]System pressure gauge: 700 bar [10,000 PSI]Case pressure gauge: 0 to 25 bar [0 to 300 PSI]17
Page 5 and 6: Model 70122Parts ListItem Part No.
Page 7 and 8: 8/7/2013Parcel ID Owners Name Legal
Page 9 and 10: Model 70122Item 4 - Compensator Par
Page 11: Model 70122Item 5 - Rotating Kit As
Page 14 and 15: Model 70122Repair Informationmay be
Page 18 and 19: Model 70122Fault - LogicTroubleshoo
Page 20 and 21: Model 70122Each order must include
Page 22 and 23: Model 70422 or 70423IntroductionTab
Page 24 and 25: Model 70422 or 70423PartsDrawingPum
Page 26 and 27: Model 70422 or 70423Item 1 - Drive
Page 28 and 29: Model 70422 or 70423Item 2 - Model
Page 32 and 33: Model 70422 or 70423Item 3 - Housin
Page 34 and 35: Model 70422 or 70423Product NumberT
Page 36 and 37: Model 70422 or 70423Repair Informat
Page 38 and 39: Model 70422 or 70423Repair Informat
Page 40: Model 70422 or 70423Fault - LogicTr
Page 48 and 49: Model 70523PartsDrawingPump drawn b
Page 50 and 51: Model 70523Item 1 - Drive Shaft Ide
Page 52 and 53: Model 70523Item 4 - Compensator Ass
Page 54 and 55: Model 70523Item 3 - Housing Identif
Page 56 and 57: Model 70523Product NumberThis list
Page 58 and 59: Model 70523Repair Informationfrom c
Page 60 and 61: Model 70523Start-up ProcedureWhen i
Page 62 and 63: Model 70523Fault - LogicTroubleshoo

Servicedatasheet - PMCCatalogue

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