SWITCH AS 3E8775 - Caterpillar

(1) Thickness of spacer plate ... 8.585 0.025 mm (.3379 .0009 in)Thickness of gasket that is placed between spacer plate and cylinder block ... 0.208 0.025 mm (.0081 .0009)Height of liner over spacer plate, under installation pressure ... 0.13 0.08 mm (.005 .003 in)(2) Height of four dowels above top surface of cylinder block:End dowels (Put 7M7456 Bearing Mount Compound on two end dowels at installation) ... 18.5 0.5 mm (.73 .02 in)Middle dowels ... 16.0 0.5 mm (.63 .02 in)(3) Dimension (new) from centerline of crankshaft bearing bore to top of block (top deck) ... 425.45 0.15 mm (16.750 .006 in)Minimum dimension from centerline of crankshaft bearing bore to top of block (top deck) ... 425.02 mm (16.733 in) The flatness across the whole contact surface of the block must be within 0.10 mm (.004 in) and within 0.05 mm (.002 in) for any 177 mm (7.0 in) section of the surface. The surface finish specification is 3.2 micrometers (125 microinches) maximum.(4) Bore in block for camshaft bearings ... 76.835 0.018 mm (3.0250 .0007 in) Install bearings with the oil holes in the bearings on the horizontal centerline. Make sure the bearing joint position is above the oil holes.(5) Bore in the block for the main bearings:Standard, original size (new) ... 129.891 0.013 mm (5.1138 .0005 in)0.64 mm (.025 in) larger than original size ... 130.526 0.013 mm (5.1388 .0005 in)(6) Distance from front of rear face of cylinder block to end of dowels ... 19.1 0.05 mm (.75 .02 in)(7) Width of main bearing cap ... 215.900 0.025 mm (8.5 .001 in)Width of block for main bearing cap ... 215.900 0.025 mm (8.5 .001 in)Clearance between main bearing cap and cylinder block ... 0.025 mm (.0009 in) tight to ... 0.025 mm (.0009 in) loose
Tightening Procedure For Main Bearings(8) Torque for the bolts that hold the caps for the main bearings: Install the main bearing caps with the marks (arrow) toward the front of the engine. Install each cap in the correct position by putting the number stamped on the bottom of the cap toward the corresponding number cast on left side of the cylinder block at the pan rail.a. Put 4C5593 Anti-Seize Compound the threads of the boltsb. Tighten the bolts first on the bearing tab side of the cap to ... 255 14 N m (188 10 lb ft)c. Tighten the bolts on the opposite side to ... 255 14 N m (188 10 lb ft)d. Put a mark on each bolt and cap.e. Tighten the bolts on the opposite side, from the mark ... 120 5 degreesf. Tighten the bolts on the bearing tab side of the cap, from the mark ... 120 5