POWERTECH™ 2.9 L OEM Diesel Engines - John Deere Industrial ...

TroubleshootingLubrication System TroubleshootingSymptom Problem SolutionLow Oil Pressure Low crankcase oil level Fill crankcase to proper oil level.Clogged oil cooler or filterExcessive oil temperatureDefective oil pumpIncorrect oilOil pressure regulating valve failureClogged oil pump screen or crackedpick-up tubeExcessive main or connecting rodbearing clearanceRemove and inspect oil cooler. Seeyour John Deere engine distributoror servicing dealer.Remove and inspect oil cooler. Seeyour John Deere engine distributoror servicing dealer.Remove and inspect oil pump. Seeyour John Deere engine distributoror servicing dealer.Drain crankcase and refill withcorrect oil.Remove and inspect oil pressureregulating valve. See your JohnDeere engine distributor or servicingdealer.Remove oil pan and cleanscreen/replace pick-up tube.Determine bearing clearance. Seeyour John Deere engine distributoror servicing dealer.High Oil Pressure Improper oil classification Drain crankcase and refill withcorrect oil.Oil pressure regulating valve failureStuck or damaged filter bypass valveStuck or damaged oil cooler bypassvalveRemove and inspect oil pressureregulating valve. See your JohnDeere engine distributor or servicingdealer.Remove and inspect filter bypassvalve. See your John Deere enginedistributor or servicing dealer.Remove and inspect oil coolerbypass valve. See your John Deereengine distributor or servicing dealer.Continued on next pageRG,RG34710,7600–19–30JUN97–1/350-14 060106PN=130