853135 Mercruiser O-RING

Illustration 1 g01331473 (1) Spacer plate Thickness of the spacer plate ... 9.970 0.025 mm (0.3925 0.0010 inch)Thickness of the spacer plate gasket ... 0.196 0.025 mm (0.0077 0.0010 inch)Note: Refer to the Testing and Adjusting, "Cylinder Liner Projection" for the height of the cylinder liner that is over the top of the spacer plate. (2) Main bearing cap bolts Use the following procedure to install the main bearing cap bolts:
Apply 6V-4876 Lubricant on the threads and on the face of the washer.
Tighten all of the bolts to a torque of 41 4 N m (30 3 lb ft).
Put a mark on each bolt and each cap.
Tighten each bolt to an additional 90 5 degrees from the mark. Note: Install the bearing caps with the part number toward the front of the engine. Ensure that the mark (number) on the bearing cap next to the bolt hole is in agreement with the mark in the cylinder block. (A) Dimension from the center of the main bearing bore to the top of the new cylinder block ... 383.515 0.165 mm (15.0990 0.0064 inch) (B) Camshaft bearings Installed camshaft bearing bore ... 58.80 0.06 mm (2.315 0.002 inch)Bore in the cylinder block for the camshaft bearings ... 65.100 0.025 mm (2.5630 0.0010 inch) (C) Main bearings Bore in the cylinder block for the main bearings (standard size) ... 96.926 0.013 mm (3.8160 0.0005 inch)Bore in the cylinder block for the oversize main bearings 0.51 mm (0.020 inch) ... 97.436 0.013 mm (3.8361 0.0005 inch) (D) Dimension from the center of the main bearing bore to the bottom of the new cylinder block ... 153.99 0.10 mm (6.063 0.004 inch) (E) Main bearing cap Clearance between the main bearing cap and the cylinder block (tight clearance) ... 0.033 mm (0.0013 inch)Clearance between the main bearing cap and the cylinder block (loose clearance) ... 0.043 mm (0.0017 inch)Main bearing cap width ... 165.095 0.020 mm (6.4998 0.0008)Width of the cylinder block for the main bearing cap ... 165.100 0.018 mm (6.5000 0.0007 inch)
Illustration 2 g01331482
(3) Piston cooling jets Note: There are holes in the bores for the main bearings between the cylinders for the piston cooling jets. These holes must have piston cooling jets (3) that are installed.
Illustration 3 g01331474 (F) Extension of the two dowels from the surface of the cylinder block ... 19.8 0.5 mm (0.78 0.02 inch) (G) Extension of the hollow dowels from the surface of the cylinder block ... 16.0 0.5 mm (0.63 0.02 inch) (H) Apply 6V-6640 Sealant to the dowels. Installation depth of the two dowels below the surface of the cylinder block ... 1.0 0.5 mm (0.04 0.02 inch) (J) Extension of the dowels from the front face of the cylinder block ... 22.4 0.5 mm (0.88 0.02 inch) (K) Extension of the stud from the front face of the cylinder block ... 15.7 0.5 mm (0.62 0.02 inch)