Aussie Blasters Service Fundamentals (pdf - 4.30MB) - Aussie Pumps

TROUBLESHOOTINGPROBLEM CAUSE REMEDYPulsation Faulty pulsation damper Check precharge, if low recharge or replaceLow pressurePump runs extremely rough, pressure very lowWater leakage from under manifold, slightleakageOil leak between crankcase and pumpingsectionOil leaking in the area of crankshaftExcessive play in the end of the crankshaftpulleyWater in crankcaseWorn nozzleBelt slippageAir leak in inlet plumbingRelief valve stuck, partially plugged or improperlyadjusted valve seat wornInlet suction strainer clogged or improperly sizedWorn packing. Abrasives in pumped fluid or severecavitation. Inadequate waterFouled or dirty inlet or discharge valvesWorn inlet, discharge valve blocked or dirtyLeaky discharge hoseCracked pistons as a result of dry runningRestricted inlet or air entering the inlet plumbingInlet restrictions and/or air leaks. Stuck inlet ordischarge valveWorn packingWorn crankcase piston rod seals, O-rings onplunger retainer wornWorn crankshaft seal or improperly installed oilseal o-ringFaulty bearingTravel plug in use on pumpWorn main bearing from excessive tension on drivebeltHumid air condensing into water inside thecrankcaseWorn packing and/or piston rod sleeve. O-rings onplunger retainer wornReplace nozzleTighten or replaceDisassemble, reseal and reassembleClean, adjust relief valve, check for worn anddirty valve seats. Kit availableClean. Check more frequentlyInstall proper filter. Suction at inlet manifoldmust be limited to less than 6m lift or 8.5psiClean inlet and discharge valve assembliesReplace worn valves, valve seats.Replace worn valves, valve seats and/ordischarge hoseReplace pistonsCheck inlet plumbing size. Check seals are airtightReplace worn cup or cups, clean out foreignmaterial, replace worn valves.Install new packingOil leaking from underside of crankcase Worn crankcase piston rod seals Replace sealsOil leaking at rear portion of the crankcaseLoud knocking noise in pumpFrequent or premature failure of the packingDamaged crankcase, rear cover o-ring, drain plugo-ring or sight glass o-ringPulley loose on crankshaftBroken or worn bearingScored, damaged or worn plungerOverpressure to inlet manifoldAbrasive material in fluid being pumpedExcessive pressure and/or temperature of fluidbeing pumpedOver pressure of pumpRunning pump dryReplace crankcase piston rod seals. Replace o-rings.Remove oil seal retainer and replace damaged o-ring and/or sealsReplace bearingReplace with breather plugReplace crankcase bearing and/or tension drivebeltChange oil more frequently. Use high gradeautomotive 30 weight nondetergent oilReplace packing. Replace o-ringsReplace cover o-ring, drain plug o-ring, or sightglass o-ringCheck key and tighten set screwReplace bearingReplace plungersReduce inlet pressureInstall proper filtration on pump inlet plumbingCheck pressures and fluid inlet temperature,ensure they are within specified rangeReduce pressureDo not run pump without waterAussie Aussie Pumps Pumps Bertolini Bertolini Pumps Pumps Service Service Guidelines – July – July 2011 2008 9