HOUSING AS-UPPER 1582149 - Caterpillar

20. Oil At The Exhaust
Cause: Excessive valve guide wear. Correction: Recondition cylinder head assembly. * Cause: Excessive lubricating oil in valve compartment. Correction: Check rocker arm shaft and plugs to assure that they are in place. Cause: Worn piston rings. Correction: Inspect and replace components as necessary. **Caterpillar dealers are equipped with the necessary tools and personnel familiar with disassembly and assembly procedures to perform these services.21. Too Much Lubrication Oil Used
Cause: Oil leaks. Correction: Replace gaskets or seals and tighten all connections. Cause: Excessive oil to intake. Correction: See ITEM 20. Cause: Excessive valve guide wear. Correction: See ITEM 20. Cause: Crankcase oil level too high. Correction: Avoid overfilling. Determine cause and drain excess oil. Cause: High oil temperature. Correction: Check oil cooler bypass valve. Replace if damaged. Clean oil cooler core. Cause: Worn piston rings. Correction: Replace components as necessary. * Cause: Worn piston rings in air compressor. Correction: Repair or replace air compressor as necessary. * Cause: Engine overload. Correction: Engine operating with kW (horsepower) increased. Cause: PCV valve(s). Correction: Inspect and repair as necessary.*Caterpillar dealers are equipped with the necessary tools and personnel familiar with disassembly and assembly procedures to perform these services.22. Excessive Black Or Gray Smoke
Cause: Insufficient combustion air. Correction: Check air cleaner for restriction. Check inlet manifold pressure. Cause: Fuel nozzle plugged or leaking. Correction: Replace nozzle. Cause: Incorrect fuel setting or injection timing. Correction: Contact your Caterpillar dealer. Cause: Low emission system malfunction. Correction: Contact your Caterpillar dealer. Cause: Turbocharger failure. Correction: Contact your Caterpillar dealer. Cause: Air fuel ratio control (turbo only). Correction: Check adjustment or rebuild. **Caterpillar dealers are equipped with the necessary tools and personnel familiar with disassembly and assembly procedures to perform these services.23. Fuel Consumption Too High
Cause: Fuel system leaks. Correction: Large changes in fuel consumption may result. Internal leaks are probably accompanied by low engine oil pressure and increased oil level in the engine oil sump. Replace leaking components. Cause: Fuel and combustion knock. Correction: Small but measurable increases in fuel consumption may be the result of damaged fuel nozzles, misfiring or factors contributing to loss of power. See ITEM 6 and ITEM 7. Cause: Incorrect fuel setting or injection timing. Correction: Contact your Caterpillar dealer. Cause: Air fuel ratio control (turbo only). Correction: Check adjustment or rebuild. * Cause: Low idler (tire) pressure. Correction: Check idlers (tires) periodically and maintain the correct inflation pressure.*Caterpillar dealers are equipped with the necessary tools and personnel familiar with disassembly and assembly procedures to perform these services.24. Low Oil Pressure
Cause: Engine oil diluted with fuel oil. Correction: Check lip-type seals on fuel transfer pump drive shaft. Drain crankcase and refill with clean lubricant. Cause: Damaged suction bell. Correction: Replace. Cause: Excessive crankshaft bearing clearances. Correction: Replace bearings and/or crankshaft.* Check oil filter operation. Cause: Excessive timing gear bearing clearances. Correction: Inspect bearings and replace components as necessary. Cause: Excessive rocker arm bore or rocker arm shaft wear. Correction: Check lubrication. Replace components as necessary. Cause: Damaged oil