ENGINE HAS LOW OIL PRESSURE

TM-5-3805-260-24 Scraper Tractor: Elevating Self-Propelled 11 Cubic Yard Sectionalized and Nonsectionalized Manual
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TM 5-3805-260-24 21. ENGINE HAS LOW OIL PRESSURE Cause Correction Defect in Oil Pressure Gauge Install new gauge. Dirty Oil Filter or Oil Cooler Check the operation of bypass valve for the filter. Install new oil filter elements if needed. Clean or install new oil cooler core. Remove dirty oil from engine. Put lean oil in engine. Diesel Fuel in Lubrication Find the place where diesel fuel gets into the lubrication oil. Make Oil repairs as needed. Remove the lubrication oil that has diesel fuel in it. Install a new oil filter element. Put clean oil in the engine. Too Much Clearance Check lubrication in valve compartment. Install new parts as Between Rocker Arm Shaft necessary. and Rocker Arms Oil Pump Suction Pipe Has Replacement of pipe is needed. A Defect Relief Valve for Oil Pump Clean valve and housing. Install new parts as necessary. Does Not Operate Correctly Oil Pump Has A Defect Make repair or replacement of oil pump if necessary. Too Much Clearance Check the oil filter for correct operation. Install new parts if Between Crankshaft and necessary. Crankshaft Bearings Too Much Clearance Install new camshaft and camshaft bearings if necessary. Between Camshaft and Camshaft Bearings 22. ENGINE USES TOO MUCH LUBRICATION OIL Cause Correction Too Much Lubrication Oil in Remove extra oil. Find where extra oil comes from. Put correct Engine amount of oil in engine. Do not put too much oil in engine. Oil Leaks Find all oil leaks. Make repairs as needed. Oil Temperature is Too High Check operation of oil cooler. Install new parts if necessary. Clean the core of the oil cooler. Check oil cooler bypass valve. Too Much Oil To Intake Make reference to ITEM 15. Valve Guides Worn Valve Guides Make reference to ITEM 15. Worn Piston Rings Install new parts as necessary. 2-31

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