TM 5-3805-262-342-4. ENGINE TROUBLESHOOTING (CONT)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION5. ENGINE NOISY.Step 1.Step 2.Step 3.Step 4.If noiseted, thisCheck valve timing (page 3-8).a. If valve timing is not okay as indicated by dial indicator handnot indicating 0.053 inch, go to Malfunction 11, page 2-41.b. If valve timing is okay as indicated by dial indicator hand in-dicating 0.053 inch, go to step 2 below.Check fuel injection pump timing (page 3-10) and governor adjust-ments (page 3-14).a. If fuel injection pump timing and governor adjustments are notokay, adjust fuel injection pump timing (page 3-10) and adjustgovernor (page 3-14).b. If fuel injection pump timing and governor adjustments are okay,go to step 3 below.Tell assistant to start engine and operate at idle speed.Listen for noise at flywheel housing with engine operating at idlespeed.a. If noise is heard, tell assistant to increase engine speed. Ifnoise goes away when engine speed increases, flywheel is loose.Tighten flywheel mounting hardware (page 3-57).b. If noise is not heard at flywheel, go to step 4 below.Tell assistant to start engine and operate at idle speed.Listen for noise in cylinder block in line with crankshaft.increasesindicatescylinder from whichsupport maintenance4-42).NOTEwhen fuel injection line to a cylinder is disconnec-that problem is a worn piston pin or bushing in thefuel injection line was disconnected. Notify generalto remove and repair piston and connecting rod (pagea. If noise is heard, tell assistant to increase engine speed.If noise gets louder and engine vibration increases as enginerpm increases, main crankshaft bearings are worn.2-21
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
