TM 5-3805-262-342-4. ENGINE TROUBLESHOOTING (CONT)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION9. EXCESSIVE OIL CONSUMPTION (Cont).Step 3.Step 4.Step 5.Remove cylinder head (page 3-45).Check cylinder head gasket for damage.a. If cylinder head gasket is damaged, replace gasket and reinstallcylinder head (page 3-48).b. If cylinder head gasket is okay, notify direct support mainte-nance to check cylinder sleeves for out of round condition (page4-9), glaze not correctly removed from cylinder sleeves (page4-7), or piston rings not correctly installed (page 4-49).Remove valve covers (page 3-60).Check rocker arm compartment for signs of too much oil.a. If compartment has signs of too much oil, problem is clogged oilreturn holes. Use a thin wire probe and try to clear obstructionfrom oil return hole.b. If signs of too much oil are not seen, go to step 5 below.Remove rocker arm assemblies (page 3-62).Disassemble rocker arm assemblies (page 3-65).Using bore gage and micrometer, measure inside diameter of rockerarms.Inside diameter should be not more than 0.8755 inch.a. Replace a rocker arm if inside diameter is more than 0.8755inch. Reassemble (page 3-69) and install rocker arm assembly andvalve covers (page 3-71).NOTEBe sure you reassemble rocker arm assemblies correctly as described onpage 3-69. Failure to do so will cause high oil consumption.b. If rocker arms are okay, go to step 6 below.Step 6.Using micrometer, measure outside diameter of rocker arm shafts.Outside diameter should be 0.860 inch minimum.2-32
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