GASKET 4P1623 - Caterpillar

(1) Thickness of top plate ... .338 .001 in.(8.59 0.03 mm) Thickness of gasket that is placed between top plate and cylinder block ... .008 .001 in.(0.20 0.03 mm)Height of liner over top plate, under installation pressure ... .005 .003 in.(0.13 0.08 mm)(2) Height of dowels above top surface of cylinder block ... .73 in.(18.5 mm)(3) Dimension (new) from centerline of crankshaft bearing bore to top of block (top deck) ... 16.750 .006 in.(425.45 0.15 mm)(4) Bore in block for camshaft bearings ... 3.0250 .0007 in.(76.835 0.018 mm)(5) Bore in the block for the main bearings: standard, original size (new) ... 5.1138 .0005 in.(129.891 0.013 mm).025 in. (0.64 mm) larger than original size ... 5.1388 .0005 in.(130.526 0.013 mm)(6) Distance from front or rear face of cylinder block to end of dowels ... .75 in.(19.1 mm)(7) Width of main bearing cap ... 8.5000 .0005 in.(215.900 0.013 mm) Width of block for main bearing cap ... 8.5000 .0005 in.(215.900 0.013 mm)Clearance between main bearing cap and cylinder block ... .001 in.(0.03 mm) tight to ... .001 in.(0.03 mm) 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 on the cylinder block.a. Put engine oil on the threads of the bolts.b. Tighten the bolts first on the tab side of the cap to ... 190 10 lb. ft.(260 14 N m)c. Tighten the bolts on the opposite side to ... 190 10 lb. ft.(260 14 N m)d. Put a mark on each bolt and cap as shown.e. Tighten the bolts on the opposite side, from the mark ... 120°f. Tighten the bolts on the tab side of the cap, from the mark ... 120°(9) Dimension (new) from centerline of crankshaft bearing bore to bottom of block (pan rails) ... 6.500 .004 in.(165.10 0.10 mm) (10) Put 9S3264 Pipe Sealant on threads of 14 plugs before installation in the cylinder block.(11) Torque for bolts holding oil jet cooling tubes (later engines) ... 18 5 lb. ft.(24 7 N m)