TM 9-6115-604-34NAVFAC P-8-633-34(27)Coat a new gasket (6) with sealing compound MIL-S451 80, and position the gasket over the guide studsand dowels.NOTEBecause of its size and weight, assistance will be needed to install the cover.(28)Align the cover (5) over the guide studs and dowels, and tap it into place using a soft hammer.CAUTIONThe hexagon head screw (1) and capscrews (2 and 3) securing the cover are of differentlengths. To avoid thread damage, be sure they are installed In the correct holes.(29)Using the lockwashers (4) and hexagonal nuts (60), install the screws (1, 2, and 3). Cross-tighten thescrews in three stages to 45 to 50 pound-feet (61 to 68 newton-meters).(30)Check the front cover-to-seal bore alignment as follows: (a) Mount a dial indicator on the face of thecrankshaft, and position the indicator button in the seal bore.(b)Rotate the engine one complete revolution, and check the runout of the seal bore. The TIR shall notexceed 0.010 inch (0.25 mm).(c)If the TIR is excessive, remove the cover and dean the gasket surfaces thoroughly. Check thegasket surfaces, and remove any nicks or burrs using a flat mill file.(d)Install the cover, and re-check the runout (31) Install new crankshaft and accessory drive seals inaccordance with paragraph 9-33.(32)Install the front engine support in accordance with paragraph 9-36.(33)Refer to paragraph 9-38, and install capscrews (18, Figure 9-68), lockwashers (7), and washers (8) whichsecure the oil pan (20) to the timing gear cover.(34)Install the accessory drive pulleys in accordance with paragraph 9-33.(35)Install the idler pulley assembly in accordance with paragraph 7-6.(36)Install the accessory drive and fuel pump in accordance with paragraphs 6-18 and 6-27.(37)Install the water pump in accordance with the Operator and Organizational Maintenance Manual.(38)Install the radiator in accordance with the Operator and Organizational Maintenance Manual.SECTION IV. MAINTENANCE OF PISTON AND CONNECTING ROD ASSEMBLIES, MAIN AND CONNECTING RODBEARINGS, AND CYLINDER LINERS9-19. GENERAL. Before removing or disassembling functional engine components, be sure identifying match-marksare placed on the parts for correct location at reassembly. During disassembly, a brief visual inspection of each part willaid in locating the source of unusual wear. The reassembly area, tools, and parts must be kept dean; dirt grit, or otherforeign material will greatly shorten the life of bearings, pistons, rings, and cylinder sleeves. At reassembly, install all re-usable parts in the same location from which they were removed. Pistons, piston pins, and connecting rods are held todose, individual weight tolerances. They may, however, be replaced individually without upsetting engine balance,provided replacement parts have the same part number and letter Code.9-20. PISTON AND CONNECTING ROD ASSEMBLIES MAINTENANCE.a.Inspect. (See Figure 924)(1)Remove the inspection covers in accordance with paragraph 9-37.(2)Rotate the engine as necessary, and visually inspect each connecting rod and piston for cracks orevidence of overheating. A connecting rod or piston that has been running too hot will be dry, and willhave a varnish-like, baked-on coating of lubricating oil.9-44
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