TROUBLESHOOTING -cont - TM-55-1930-209-14P-9-2

TROUBLESHOOTING -cont - TM-55-1930-209-14P-9-2_297

TROUBLESHOOTING -cont - TM-55-1930-209-14P-9-2_299

TM-55-1930-209-14P-9-2 Water Purification Barges (NSN 1930-01-234-2165) Fuel Oil System Manual
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TROUBLESHOOTING TESTING AND ADJUSTING 14. LITTLE MOVEMENT OF ROCKER ARM AND TOO MUCH VALVE CLEARANCE Cause Correction Too Much Valve Clearance Make adjustment, See the Subject VALVE CLEARANCE in Test- ing and Adjusting. Not Enough Lubrication Check lubrication in valve compartment. There must be a strong flow of oil at engine high rpm, but only a small flow at low rpm. Oil passages must be clean, especially those sending oil to the cylinder head. Rocker Arm Worn at Face That If there is too much wear, install new rocker arms. Make adjustment- Makes Contact With Valve of valve clearance, See the Subject VALVE CLEARANCE in Test- ing and Adjusting. End of Valve Stem Worn If there is too much wear, install new valves. Make adjustment of valve clearance, See the Subject VALVE CLEARANCE in Testing and Adjusting. Worn Push Rods If there is too much wear, install new push rods. Make adjustment of valve clearance, See the Subject VALVE CLEARANCE in Testing and Adjusting. Valve Lifters Worn If there is too much wear, install new valve lifters. Make adjustment of valve clearance, See the Subject VALVE CLEARANCE in Test- ing and Adjusting. Damage to Valve Lifters Install new valve lifters. Check camshaft for wear. Check for free movement of valves or bent valve stem. Clean engine thoroughly. Make adjustment of valve clearance, See the Subject VALVE CLEARANCE in Testing and Adjusting. Worn Cams on Camshaft Check valve clearance. Check for free movement of valves or bent valve stems. Check for valve lifter wear. Install a new camshaft. Make adjustment of valve clearance, See the Subject VALVE CLEARANCE in Testing and Adjusting. 15. VALVE ROTOCOIL OR SPRING LOCK IS FREE Cause Correction Damage to Locks Locks with damage can cause the valve to fall into the cylinder. This will cause much damage. Damage to Valve Spring(s) Install new valve spring(s). 16. OIL AT THE EXHAUST Cause Correction Too Much Oil in the Valve Compart- Look at both ends of the rocker arm shaft. Be sure that there is a plug ment in each end. Worn valve Guides Reconditioning of the cylinder head is needed. Worn Piston Rings Inspect and install new parts as needed. Running Engine Too Long At Low Don’t let the engine run for long periods of time at low idle. Idle

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