TM 5-3805-262-342-4. ENGINE TROUBLESHOOTING (CONT)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION11. DIAL INDICATOR HAND DOES NOT INDICATE 0.053 INCH WHEN PERFORMING VALVE TIMINGCHECK (PAGE 3-8) (Cont).Step 4.Notify general support maintenance to remove timing gear cover (page4-67).Check that timing marks on camshaft drive gear and crankshaft gearare alined as shown.a. If timing marks are not alined, remove camshaft and drive gear(page 4-54). Check for damaged camshaft, key, or drive gear(page 4-61).b. If timing marks are alined, go to step 5 below.Step 5.Check backlash between cam-shaft drive gear and crank-shaft gear using dial indica-tor at drive gear as shown.Backlash should be 0.004 to0.011 inch.a. If backlash exceeds 0.011inch, replace drive gear,crankshaft gear, or worncamshaft bushings (page4-54) .b. If backlash is 0.004 to0.011 inch, go to step 6below.2-42
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business