105488-1450 ZEXEL 9 420 612 907 BOSCH GOVERNOR 9420612907 1054881450 1157703600

(1) Depth of bore in block for liner ... .401 .001 in.(10.19 0.03 mm) For height of liner over top of block make reference to CYLINDER LINER PROJECTION.(2) Camshaft bearing bore (installed) ... 2.3150 .0020 in.(58.801 0.051 mm) Bore in block for camshaft bearings ... 2.5630 .0010 in.(65.100 0.025 mm)Depth to install camshaft bearings at both ends of block ... .06 .02 in.(1.5 0.5 mm) The camshaft bearing at the front of the block must be installed with oil holes in a horizontal position and joint at the top within 15° from vertical.(3) Bore in block for main bearings (standard size)(with main bearing caps torqued) ... 3.8160 .0005 in.(96.926 0.013 mm) Bore in block for main bearings .020 in. (0.51 mm oversize) ... 3.8360 .0005 in.(97.434 0.013 mm)(4) Dimension from center of main bearing bore to top of cylinder block (new) ... 15.5000 .0065 in.(393.700 0.165 mm)(5) Dimension from center of main bearing bore to bottom of cylinder block (new) ... 6.0625 .0040 in.(153.988 0.102 mm)(6) Torque for bolts holding bearing caps for main bearings: a. Put engine oil on threads and washer face.b. Tighten all bolts to ... 30 3 lb. ft.(40 4 N m)c. Put a mark on each bolt and cap.d. Tighten all bolts from mark ... 90° Install bearing caps with the part number toward the front of the engine. Be sure that the mark (number) on the bearing cap next to the bolt hole is in agreement with the mark in the cylinder block.(7) Clearance between slot in block and bearing cap (with main bearing caps torqued) ... .0017 in.(0.043 mm) loose to ... .0013 in.(0.033 mm) tight
There are holes in the bores for the main bearings, between the cylinders for piston cooler orifices. These holes must have orifices (8) installed.