TM 5-3805-262-34INSPECTION AND REPAIR ( SHEET 3 OF 3)(7)Check thickness of thrust washer (8) using micrometer. If thickness isless than 0.1215 inch, replace thrust washer (8).(8)Using a micrometer, measure outside diameter of idler gear shaft. Replaceif outside diameter is less than 1.7325 inches.(9)Using a micrometer, measure thickness of idler gear thrust washer. Re-place if thickness is less than 0.061 inch.(10) Using bore gage and micrometer, measure inside diameter of idler gear.Replace if inside diameter is more than 1.7375 inches.(11) Using bore gage and micrometer,measure diameter of valve lifterbores in cylinder block. If di-ameter of bores is more than0.8135 inch at any point, boresmust be machined to 0.82200.0005 inch and over size lift-ers must be used. If diameter ofany lifter bore is more than0.8240 inch at any point, cylin-der block must be replaced.NOTEWhen machining valve lifter bores, be sure that bores are 90 degrees tocamshaft bore centerline within a total tolerance of 0.001 per inch.(12) Using micrometer, measure outsidediameter of valve lifter (13)stem. Replace valve lifters ifoutside diameter of lifter stemis less than 0.8097 inch onstandard size valve lifters or0.8190 inch on oversize valvelifters.NOTEReplace an item if inspection indicates need for replacement.(13) Inspect gears (5 and 6) for broken or missing teeth, distortion, cracks,or pitting.(14) Inspect camshaft (9) for damage or scoring.(15) Inspect thrust spring (2) for distortion, cracks, or signs of permanentset.(16) Inspect nut (3) for thread damage or cracks.4-61
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