TM 9-6115-604-34NAVFAC P-8-633-34(5) Install the piston and connecting rod assemblies as follows:CAUTIONDuring assembly and Installation procedures, be sure all parts are kept clean and free of dirt orother foreign materials. Be especially careful when Installing the connecting rod bearing shellhalves In the connecting rod and cap. Even a small amount of foreign matter trapped betweenthe bearing shells and the rod or cap, will decrease bearing shell-to-journal clearance andresult In premature wear or burned bearing shells. To avoid damage to the crankshaft journals,the services of two technicians will be required when Installing the piston and connecting rodassemblies. Be sure all connecting rods and caps are matched, and are returned to the samecylinder from which they were removed.(a)Rotate the crankshaft (32) to TDC for the assembly being replaced. If all assemblies are being replaced,start at No. 1 cylinders.(b)Install the bearing shells (11, Figure 9-24) in the connecting rod (4) and cap (3). Before installing thebearing shells, be sure all traces of oil or other foreign material is removed from the mating surfaces of therod, cap, and bearing shell.(c)Lubricate the bearing shell surfaces, piston rings, and cylinder liner surface with dean lubricating oil MIL-L-2104, and install the nylon guide pins 3375098 in the connecting rod bolt holes.(d)Insert the piston and connecting rod assembly in ring compressor 3375342. Using a second technician toguide the connecting rod over the crankshaft journal, tap the assembly into the cylinder using a woodenblock. Be sure the identifying marks on the connecting rod face the camshaft. Continue tapping until theconnecting rod is seated on the crankshaft journal.(e)Repeat steps (a) through (d), above, for the opposite bank.(f)With an assistant holding the connecting rods in contact with the journal, rotate the crankshaft to BDC.(g)Working through the inspection holes, remove guide pins 3375098. Check that the identifying marks onthe connecting rod cap (3) match with the connecting rod (4).(h)Check the bearing clearance using Plastigage in accordance with paragraph 9-21.(i)Remove all traces of Plastigage from the bearing shell (11), lubricate the bearing shell surface with deanlubricating oil MIL-L-9000, and install the connecting rod cap (3) on the connecting rod (4).(j)Lubricate the connecting rod bolts (1) and washers (2) with dean lubricating oil MIL-L-2104, install thewashers and bolts, and crosstighten to 25 pound-feet (34 newton-meters). Do not tighten the connectingrod bolts to their final torque until all connecting rods and caps have been installed.(k)Turn the crankshaft (32) to the next TDC position, and install the piston and connecting rod assemblies forthese cylinders in accordance with steps (a) through 0), above. Continue this procedure until allconnecting rods have been installed.(I)Cross-tighten the connecting rod bolts (1) on each connecting rod in accordance with Table 9-3.(m)Using a feeler gage, check the connecting rod side clearance. Connecting rod side clearance shall be0.012 to 0.020 inch (0.30 to 0.51 mm), and rods must be free to move sideways on the crankshaft (32). Ifthe connecting rods do not move freely on the crankshaft, or the clearance is not to specifications, checkfor improper bearing shell installation or crankshaft thrust surface wear. Rebuild a worn crankshaft inaccordance with paragraph 9-28.(6)Replace the inspection covers in accordance with paragraph 9-37.(7)Replace the cylinder heads in accordance with paragraph 9-10.9-57
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