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INSPECTION - TM-5-4210-229-14P_412
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TM-5-4210-229-14P Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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TIMING AND GEAR TRAIN MAINTENANCE
TM5-4210-229-14&P 6-9.  CAMSHAFT AND GEAR MAINTENANCE (Continued). a.  If the camshaft bushings were removed, install new bushings using the camshaft bushing puller and installer tool from the camshaft bearing ser- vice set.  Be sure the oil holes in the bushing (1) line up with the oil holes in the crankcase (2). b.  To ease oil hole alignment, mark the back-up nut (3) in line with the bushing oil hole (1) when installing the bushings. c.  Camshaft gear replacement. (1) The drive gear on the camshaft must be pressed off since it is a shrink fit. (2) Place the thrust plate on the keyway end of the camshaft against the bearing journal. (3) Insert the woodruff key into the keyway. NOTE Use a Thermomelt crayon to determine temperature. (4) Heat the camshaft gear to approximately 400°  F (205°  C). Wear asbestos gloves when installing gear. (5) Press the gear against the shoulder on the shaft with the timing mark pointed out- ward. d.  Coat the cam lobes, bearings and journals with clean engine oil (Appendix D, Item 37) and install the camshaft. e.  Install the camshaft so that the timing marks stamped on each gear are in line. f.  Alternately torque the thrust plate cap screws to 20 ft-lb (27 N.m) torque. g.  Check the camshaft end play with a dial indicator. End play should be 0.005 to 0.013 in (0.13 to 0.33 mm). h.  Install front cover (paragraph 6-8). i.  Install cylinder head and valves (paragraph 6-6). 6-10.  TIMING AND GEAR TRAIN MAINTENANCE This task cover:     a.  Removal b.  Inspection c.  Installation INITIAL SET-UP Tools Dial Indicator General Mechanics Tool Kit Equipment Condition Para.  Condition Description 6-9    Camshaft and Gear Removed Materials/Parts Idler Gear (675764C1) Injection Pump Drive Gear (1802737C1) Cleaning Solvent (Appendix D, Item 54) Grease (Appendix D, Item 21) 6-20

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