t.Tighten both the capscrews to approximately 1/2torque and then to full torque.u. Check connecting rod side clearance. Correctclearance is 0.005 to 0.010 inch.v. Install oil pump and oil pan. (para 14-67.)w. Install cylinder head. (para 14-79.)X. Install engine assembly. (para 2-14.)Section XVII. CRANKSHAFT AND CYLINDER BLOCK14-84 GENERALa. The cylinder block is the main structural part ofthe engine. It is cored to receive removable wet-typecylinder sleeves. The cylinder sleeves are completelysurrounded by water jackets which extend the full lengthof the cylinder walls for maximum cooling.b. The seven-bearing, counterbalanced crankshaftconverts the vertical power strokes of the pistons to a rota-tional torque that can be applied to the generator throughthe flywheel.c. The six camshaft bearings which support thecamshsaft are mounted in the cylinder block. These bear-ings are easily accessible when the piston assemblies, con-necting rods, cylinder sleeves and crankshaft are removed.14-85Crankshaft. Cylind erSleevesandCamshaftBearings Removal.a. CrankshftRemoval.(1) Refer to Operator and Organizational Main-tenance Manual for removal of the housing, radiator, elec-tric starter, winterization kits (if installed), turbocharger,and manifolds.(2) Remove oil pan and oil pump. (para14-65.)(3) Remove flywheel housing and fly-wheel. (para 14-69.)(4) Remove crankshaft pulley and vibrationdampener. (para 14-61.)(5) Remove timing gear housing, crankshaftgear and engine front plate. (para 14-72.)(6) Remove connecting rod bearingcaps. (para 14-81.)NOTEIdentify connecting rod caps as to their originallocation on the connecting rods, and in the cylin-der block in the event inspection proves they canbe reused. Cylinder numbers is marked on thecamshaft side of each rod and rod cap.(7) Remove two capscrews on each main bear-ing cap and remove main bearing caps and lower mainbearing shells. (fig. 14-41.)(8) Remove crankshaft.(9) Remove upper main bearing shells fromcylinder block.b.CylinderSleevesRemoval,(1) If the sleeves are to be reused, insure thatthe ridge above the ring travel is removed with a hone or aridge removing tool. Insure that the glaze in ring travelarea is removed with a cylinder hone or a glaze breakertool. Hone the sleeve to a cross hatch pattern at angles of22 to 32° to a place perpendicular to the bore axis. Thecross hatch should be nearly uniform in both diretions.Do not over- hone; stop when glazed area is removed.Thoroughly clean the sleeve with warm water and com-mon laundry detergent and scrub the bore with a stiffbristle brush. Dry the sleeve with compressed air andinspect the bore to see that it is not oversize. After clean-ing protect the bore of the sleeve with a thin coating ofengine lubricating oil.If the cylinder sleeve was honed while installedin the cylinder block, clean the block thor-oughly to make certain that all abrasive mate-rial is removed.(2) Refer to Operator and Organizational Main-tenance Manual and remove housing, radiator, electricstarter winterization kits, (if installed), turbocharger, man-ifolds, and valve cover.(3) Remove cylinder head and valve operatingmechanism.(para 14-77.)(4) Remove piston and connecting rod assem-blies. (para 14-81.)(5) Remove cylinder sleeves. (fig. 14-41.)(6) Remove all dirt, carbon. and oil from cylin-der sleeves and from the machined recess and bore in cyl-inder block.c. Camshaft Bearings Removal(1) Refer to Operator and organizational Main-tenance Manual and remove housing, radiator, electricstarter, winterization kits, (if installed). turbocharger, man-ifolds, and valve cover.(2) Remove cylinder head and valve operatingmechanism. (para 14-77.)14-92 Change 12* U.S. GOVERNMENT PRINTING OFFICE : 1994-655-026/00441P I N 0 1 3 5 5 0 - 0 12
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