k.Install three guide pins on flywheel housingto aid in the mstallation of the flywheel. Lubricatethe lip of the oil seal and the wear sleeve withengine oil.1.Install the flywheel over the temporaryguide pins as straight as possib]e. Do not cut,crimp, or double back the seal lip.m. Remove the guide pins..n.After flywheel is assembled to the crank-shaft tighten the flywheel lock bolts to a torque of95 to 105 foot-pounds.o.Attach a dial indicator to the flywheel hous-ing and check flywheel face for run-out. Pry fly-wheel to the rear, to eliminate crankshaft end ply,otherwise dial indicator reading will not beaccurate.Flywheel face run-out must not exceed0.0005 inch maximum total indicator reading perinch of flywheel diameter.p.Readjust dial indicator so that the stemwill ride on flywheel driving ring bore. The eccen-tricity of the driving ring bore must not exceed0.0005 inch maximum total indicator reading.NOTEEccentricity between driving ringbore and pilot bearing bore mustnot exceed 0.008 inch total indicatorreading.q.Attach dial indicator to the flywheel housingand check pilot bearing bore for run-out. Eccen-tricity y of pilot bearing bore must not exceed 0.005inch maximum total indicator reading.Attach dial indicator to flywheel and checkflywheel housing bore for run-out.The bore run-out must not exceed 0.008 inch total indicator read-ing.s. Readjust dial indicator to check flywheelhousing face for run-out. The face run-out mustnot exceed 0.008 inch total indicator reading.t .Install electric starter.Refer to Operatorand organizational Maintenance Manual.Install engine in unit. Refer to paragraph2 - 1 4 .Section XIV. TIMING SYSTEM14-71. Description.a.Timing Gear Cover Removal. See figure14-34 and proceed as followsa.Timing is preformed by a train of mechan-ically synchronized timing gears located at the(1) Remove engine support (para 2-13).front of the engine.This train consists specificallyof four gears: fuel pump drive gear, idler gear,(2) Remove crankshaft pulley and vibra-camshaft gear and crankshaft gear. (Class 1 setstion dampener assembly (para 14-61).contain an additional gear to drive the hydraulicpump).(3) Remove oil pan (para 14-65).b.The crankshaft drive gear is the centralelement of this gear train, driving the other gearseither directly or indirectly. The fuel pump drivegear and camshaft gears are timed to the crankshaftgear to provide timed synchronization of fuel injec-tion and valve positions.The idler gear transfersdrive power from the crankshaft gear to the fuelpump drive gear.c. The timing gear cover encloses the geartrain-and the front end of the engine. The gears arelubricated by the oil splash method.d.A malfunction in the timing system is usu-ally indicated by an extremely loud knocking soundfrom the engine or abnormally quiet but sluggishoperation of the engine.These symptoms are an in-dication that the engine is not properly timed. If theengine was operating normally prior to the occur-rence of these symptoms, it is an indication that thegear is badly worn or has lost a gear tooth.14-72. Gears and Cover Removal.(4) Remove inspection plate, capscrews,lockwashers and fuel pump drive gear inspectionplate. Remove thrust button with spring from fuelpump drive shaft.NOTEIf only the fuel pump drive gear hasto be removed and/or replaced, thegear can be removed through theopening in the timing gear cover.(5) Remove capscrews on front and backside, which secure timing gear cover to cylinderblock and engine front plate. Jar cover loose witha soft-headed hammer. Pry cover from locatingdowels, and remove it from fencing.b.Fuel Pump Drive Gear Removal. Refer tonote above 14-25 and proceed as follows:(1) Rotate engine until No. 1 piston is attop dead center on its compression stroke.14-72Change 6
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