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.
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