TM 5-3805-261-34ENGINE TROUBLESHOOTING AND MAINTENANCE PROCEDURES.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONm.LITTLE ROCKER ARM MOVEMENT OR TOO MUCH VALVE CLEARANCE.Step 6.Check the valve lifters.If the valves are not moving freely--replace valve lifters. Refer to paragraph 3-12.Step 7.Check the cams on camshaft.If the cams are worn, damaged or defective--contact General Support.n.VALVE ROTOCOIL OR SPRING LOCK IS FREE.Step 1.Check the locks. Locks with damage can cause the valve to fall into the cylinder.If the locks are damaged or defective--replace. Refer to paragraph 3-13.Step 2.Check the valve springs.If the valve springs are damaged or defective--replace. Refer to paragraph 3-13.o.OIL AT THE EXHAUST.Step 1.Check the valve compartment for excess oil.If there is too much oil in the valve compartment--make sure there are plugs at both ends of the rocker arm shaft. Refer to paragraph 3-12.Step 2.Check the valve guides.If the valve guides are worn--the cylinder head should be reconditioned. Contact General Support.Step 3.Check the piston rings.If the piston rings are worn, damaged or defective--contact General Support.3-11
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