TM 5-4320-300-146-11. CRANKSHAFT AND FLYWHEEL (CONT)Location/ItemActionRemarksINSTALLATION/INSPECTION38. Oil plugs andInstall.Woodruff key39. CrankshaftSlide crankshaft gear overtiming gearend of crankshaft withtiming marks on outer rimof gear facing out andkeyway in gear in aline-ment with Woodruff keyin crankshaft. Aline theproper timing mark oncrankshaft gear with cor-responding mark on idlergear. Drive the gear upagainst shoulder oncrankshaft.40. Backlash be-Check backlash. It should be 0.003 to 0.005tween crank-inch (0.0762 to 0.127 mm) with new gears,shaft gear andor a maximum of 0.007 inch (0.1778 mm)idler gearwith used gears.CAUTIONEquipment damage may occur if a used oil pump drive gear is reinstalled. Install new gear toensure oil pump functions at full capacity.41. Oil pumpLubricate inside of replacement oil pump drivedrive gearwith MIL-L-2104 oil. Slide gear straight oncrankshaft with chamfered edge of gear towardbutt end of crankshaft and drive gear intoplace. Gear is correctly positioned when for-ward face of gear is 2.680 inches (68.07 mm)from front end of crankshaft.42. Slip torqueCheck the slip torque (press fit) of oil pumpcheckdrive gear on crankshaft. Gear should not slipon crankshaft at a torque of 100 ft lb(136 N•m). If gear slips, replace it.6-105
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