Engine Uses Too Much Fuel JC89288,0000058 –19–04APR06–1/1 Engine Uses Too Much Fuel Diagnostic Procedure –1/1 TM2361 (24JUN08) 9010-15-18 450DLC Excavator Operation and Tests 062608 PN=288 Diagnostic Information 1 Oil Check Check the following • Oil type • Oil level • For any engine oil leaks Was problem found? YES: Repair or replace parts as necessary and retest. NO: Go to Air System Check. – – –1/1 2 Air System Check • Check air filter (plugged). • Check crankcase breather for restriction. Was problem found? YES: Repair or replace parts as necessary and retest. NO: Go to Mechanical Engine Check.
– – –1/1 9010 15 18 3 Mechanical Engine Check Check the mechanical parts of the engine, and repair if needed. • Check main or connecting rod bearing clearance • Check pistons or liners for scoring • Check crankshaft thrust bearings for wear (misaligned piston and rod) • Check valve guides or valve stems for wear. Are mechanical parts of engine OK? NO: Repair or replace parts as necessary and retest. – – –1/1