TM 5-3805-260-24CRANKSHAFTSurface finish must be 10 micro inches (0.25micrometers) or less.Radius (E) must be .095 .010 in. (2.41 0.25 mm)Surface finish must be 63 micro inches (1.6micrometers) or less.The radius must blend smoothly with the newlymachined journals.Width (F) is 1.258 .002 in. (31.95 0.05 mm) fornumber 4 main bearing journal. Surface finish on thethrust faces of the number 4 main must be 18 microinches (0.45 micrometers) or less. Width (F) is 1.268 +.020 - .010 in. (32.21 + 0.51 - 0.25 mm) for number 2, 3,and 5 main bearing journals.There is no width (F) for number 1 main bearingjournal.When grinding a crankshaft, no material can beremoved from the crankshaft webs or counterweights.CRANKSHAFT GEAR REMOVALRemove the gear using an 8B7548 Push Puller,8B7551 Bearing Pulling Attachment, 8B75621 StepPlate, and 8H684 Ratchet Box Wrench.PULLING CRANKSHAFT GEARThe IP820 Hydraulic Puller Group can also be used topull gear from crankshaft. Tools required are IP820Hydraulic Puller Group, 8B7551 Bearing PullingAttachment, 8B7549 Puller legs (two), 8B7561 StepPlate, 3H465 Plate (four), IB4207 Nut (two), and 5P3100Pump Group.USING HYDRAULIC PULLERCRANKSHAFT GEAR INSTALLATION1. Install the key in keyway of crankshaft. Remove allburrs from key and keyway inside of crankshaft gear.2. Heat gear to 500°F (260°C) maximum.3. Install gear on crankshaft with timing mark on gearfacing front of crankshaft.CRANKSHAFT FRONT OIL SEAL REMOVALRemote the crankshaft front pulley. Use the 1P3075Puller Group to remove the crankshaft front oil seal.REMOVING FRONT OIL SEAL(Typical Example)3-387
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