COVER-TRANSMISSION 6Y8507 - Caterpillar

Installation Of Short Block Group Or Cylinder Block Service Group For 1100, 3100 and 3208 Naturally Aspirated Engines
In those applications where the original crankshaft is to be used again with a new 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.Installation Of 5B1866 Plug And 9M575 Dowel On 1100, 3100 And 3208 Naturally Aspirated Engines
Sleeve Metering Fuel System
Compact (Scroll Type) Fuel System
Before installation of a short block group or the cylinder block service group, see the illustrations above to determine which type of fuel system is on the original engine. If the engine has a compact (scroll type) fuel system, do not install the dowel and plug. Lubrication to and from fuel injection pump and governor will be stopped.
(1) If the engine has a sleeve metering fuel system, install 9M575 Dowel (1) and 5B1866 Plug (2) to the dimension shown.(2) If the engine has a compact (scroll type) fuel system, do not install dowel (1) or plug (2).Installation Of Short Block Group Or Cylinder Block Service Group For 3208 Turbocharged Engines
A short block group with orifices (piston cooling jets) can be used as a replacement short block for those 3208 turbocharged engines that have orifices (piston cooling jets) in the cylinder block. The cylinder block service group has a replacement cylinder block assembly for 3208 turbocharged engines, but it is also necessary to use a cylinder block service kit. Use of the cylinder block service group makes it necessary to install either 8M3023 Orifices or 7M4593 Plugs, in the specific holes in the main bearing bore of the cylinder block. This instruction gives a method to check your old cylinder block to see if it is necessary to install the plugs or orifices, for your particular engine application.(A) Installation Of 7M4593 Plugs Or 8M3023