HOSE 3785355 - Caterpillar

9N3763 Cylinder Block Service Group
In those applications where the original crankshaft is to be used again with the new 9N3763 Cylinder Block Service Group, check the crankshaft carefully to find the location of the oil supply passage for the No. 1 connecting rod bearing. 1 If the crankshaft has an oil passage (A) from the No. 1 (front) main bearing journal (1) to the No. 1 connecting rod bearing, it will be necessary to install a No. 1 main bearing with an upper half (2) that has a lubrication groove (B). 2 If the crankshaft has an oil passage (C) from No. 2 main bearing journal (3) to the No. 1 connecting rod bearing, it will be necessary to install a No. 1 main bearing that has an upper half similar to upper half (4), with no oil groove. 3 Install the correct upper half of the No. 1 (front) main bearing in the cylinder block. Locating tab (D) of the upper half of the No. 1 (front) main bearing, must fit in tab slot (5), in the center of the bore. Tab slots 6, 7, 8 and 9, for main bearings 2, 3, 4 and 5 are to the right of center as shown in the illustration. Install main bearings 2, 3, 4 and 5 in their correct location. Tighten the main bearing caps according to the Specifications in the Service Manual.Install 9L6065 Cylinder Block Cover Group
Before installation of a short block group or the cylinder block service group, find out what type of fuel system is on the engine. If the engine has a sleeve metering fuel system, install dowel (1) and plug (2) to the dimensions shown. If the engine has a compact (scroll type) fuel system, do not install dowel (1) and plug (2). On engines that have a scroll type fuel system, lubrication to the fuel injection pump and governor will be stopped if dowel (1) is installed. If plug (2) is installed, lubricant cannot get out of the injection pump and governor.
Sleeve Metering Fuel System
Compact (Scroll Type) Fuel System9N5190 Short Block Group and 9N5669 Short Block Group
After the engine is rebuilt using the new short block group and the necessary parts from the old engine, be sure to do the pressure lubrication procedure before the initial (first) start-up of the engine. See Form SMHS7701 for the pressure lubrication procedure.