LITTLE OR NO VALVE CLEARANCE

LITTLE MOVEMENT OF ROCKER ARM AND TOO MUCH VALVE CLEARANCE

TM-5-3805-263-14P-2 Grader Heavy Road Motorized Type I Nonsectionalized Type II Sectionalized Manual
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TROUBLESHOOTING TESTING AND ADJUSTING TM 5-3805-263-14&P-2 17. LITTLE OR NO VALVE CLEARANCE Cause Worn Valve Seat or Face of Valve Correction Reconditioning of cylinder head is needed. Make adjustment of valve clearance, See the Subject VALVE CLEARANCE in Testing and Adjusting. 18. ENGINE HAS EARLY WEAR Cause Dirt in Lubrication Oil Air Inlet Leaks Fuel Leakage Into Lubrication Oil Correction Remove dirty lubrication oil. Install a new oil filter element. Put clean oil in the engine. Inspect all gaskets and connections. Make repairs if leaks are present. This will cause high fuel consumption and low engine oil pressure. Make repairs if leaks are present. Install new parts where needed. 19. COOLANT IN LUBRICATION OIL Cause Failure of Oil Cooler Core Failure of Cylinder Head Gasket Crack or Defect in Cylinder Head Crack or Defect in Cylinder Block Failure of Seals for Cylinder Liners Correction Install a new core for the oil cooler. Install a new cylinder head gasket. Tighten the bolts holding the cylinder head, according to Specifications. Install a new cylinder head. Install a new cylinder block. Make a replacement of the seals. 20. TOO MUCH BLACK OR GRAY SMOKE Cause Not Enough Air For Combustion Bad Fuel Injection Nozzle(s) Correction Check air cleaner for restrictions. Check inlet manifold pressure. Inspect turbocharger for correct operation. Test all nozzles. Install new nozzles if test shows replacement is needed. Wrong Fuel Injection Timing Make adjustment to timing. 1-32

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