TM 5-3895-382-24 5. The turbine housing is damaged or restricted. The turbine housing must be repaired or replaced. 6. The bearings of the turbocharger are worn. Replace the bearings. 7. Carbon has collected behind the rotor of the turbine. Remove the carbon. 8. The piston rings are worn. Replace the piston rings. 9. The high idle operates for an excessive period of time. The fuel injection pump must be repaired or replaced. 10. A   restriction   exists   in   the   bearing   housing   of   the turbocharger. The bearing housing must be repaired or replaced. Problem 8 Not Enough Lubrication Probable Cause 1. The  turbocharger  is  loose  or  the  clamps  and  bolts  on the turbocharger are loose. Correctly   position   the   turbocharger   and   tighten   the clamps and bolts. 2. The flow of lubricating oil is delayed to the turbocharger when the engine is started.  Insufficient oil flows to the turbocharger when the engine is running. Check the following components for correct operation: oil pump the engine oil bypass valve the bypass valve in the oil filter base oil filter viscosity of the oil restrictions in oil lines 3. The lubricating oil is dirty. Drain   the   lubricating   oil.      Install   the   correct   type   of lubricating oil.  Replace the oil filter. 4. The incorrect type of lubricating oil is installed. Drain the lubricating oil.  Replace the oil filter.  Install the correct type of lubricating oil. 5. The oil supply line from the oil pan is restricted. The oil supply line must be repaired or replaced. 6. The engine rpm increases too rapidly when the engine is started. Check the fuel injection pump for correct operation and settings. 7. The high idle operates an insufficient period of time. Check the fuel injection pump for correct operation and settings. 8. Lubricating oil is leaking from the oil supply line. The oil supply line must be repaired or replaced. 9. A   restriction   exists   in   the   bearing   housing   of   the turbocharger. The bearing housing must be repaired or replaced. 10. A restriction exists in the lubricating oil filter. Clean the oil filter base and the housing for the oil filter. Check the operation of the bypass valve in the oil filter base.  Replace the oil filter. 11. The engine stopped too soon from a high load condition. Check the following components for correct operation or damage: compressor impeller of the turbocharger coolant system fuel injection pump air/fuel ratio control wastegate valve lash fuel injector nozzles Problem 9 The inside of the intake manifold is wet. Probable Cause 1. The element of the air filter is dirty. The element must be cleaned or replaced 6-32