1. Slot2. Oil hole3. Idler gear shaftME 6115-545-34/14-35Figure 14-35. Idler Gear Shaft Installation(3) If idler gear shaft is scored or worn itmust be replaced The specified outer diameter onboth ends of the idler gear shaft is 0.999”-1.000”.Install a 9/16 -18 adapter in the end of the idlergear shaft. Install the end of the slide hammer intothe adapter and remove the idler gear shaft from thecylinder block.d. Camshaft Gear Removal. Refer to para-graph 14-77 for removaI procedures.e.Crankshaft Gear Removal. Use bar typepuller and remove crankshaft gear.f .Hydraulic Gear Removal. (Class 1 setsonly (para 14-14)14-73. Timing Gears and Housing Cleaning and In-spection.Clean cover and gears using cleaning sol-vent, Federal Specification P- D-680.b. Clean all gasket material from timing gearcover using care to prevent scoring or gouging ofsurface.c. Inspect front support plate for damage andwear.d. Inspect idler gear shaft for scoring orwear The center diameter on both ends must be0.999 to 1,000 inch.e.Inspect all gears for excessive wear andchipped or broken gear teeth14-74. Timing Gears and Housing Repair.a.Repair is limited to replacement ofhousing, front supportworn or damaged.b. Replace idlerexcessively worn beyondto step d. above.14-75. Installation.plate, or gears if badlygear shaft if scored or ex-the allowable limits. Refera.Crankshaft Gear Installation—(1) Install woodruff key in crankshaft.(2) Heat gear in oil to a temperature ofapproximately 300° F.(3)a mixture of(4)Coat crankshaft at gear location withwhite lead and oil.Drive or press gear onto crankshaft.CAUTIONUse asbestos gloves when handlingthe heated gear.(5) When crankshaft is installed in enginemake certain that timing mark a crankshaft gearis aligned with timing mark, on camshaft gear whencrankshaft gear is installed.b. Camshaft Gear Installation. See figure14-35 and proceed as follows:(1) Insert idler gear shaft into cylinder.Block bore so that oil hole on top of shaft alignswith slot in front plate.gearuntil(2) Insert washer and capscrew into idlershaft (see fig. 14-34) and tighten capscrewshaft bottoms in cylinder blockNOTEThe bore size of the roller bearingis 1.000-1.008 inches and theouter diameter of the outer race ofthe bearing is 1.980-1.981 inches.The bore size of the idler gear is1.9785-1.9795 inches and the boresize of the groove in the idler gearfor the spacer is 2.068-2.078inches. If the bearing assembly isworn, drive the outer races out witha punch and press in the new racesuntil they contact the newly installedspacer.14-74
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