HARNESS ASSEMBLY 3V2767 - Caterpillar

Note: Inspection or replacement of the main bearing can be done with the crankshaft in place. The stud tensioner tool group is used with Tooling (B). The stud tensioner tool group and the main bearing cap can be raised and lowered by using Tooling (B).When you assemble Tooling (B), always use the spring clips. The clips will prevent components from dropping into the oil pan. Link (5) connects to either the tensioner or pin (2).
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Remove saddle bolts (6) from the main bearing. These bolts are located on each side of the engine. Note: Before you install Tooling (B), move the crankshaft to a position that is out of the way of the connecting rod journal.
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Put supports (1) and tray (3) in position under the main bearing cap. Be sure to install the spring clips in order to hold the components in position.
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Fasten brackets (4) to the bolt holes in the side cover. Connect link (5) to the tensioner cylinder. Note: Each bracket (4) has an adjusting screw in order to change the angle of Tooling (B). This allows you to better lift the tensioner cylinder.
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Install pins (2) in the main bearing cap. The pins have spacers in order to obtain a good fit on the main bearing cap.
Use Tooling (B) in order to lift the tensioner cylinder and the reaction sleeve on the stud. The adapter nut should be able to be turned on to the stud.
Tighten the adapter nut with a 1/2 inch ratchet. The nut should then be loosened 1 1/2 turns.
Attach the hoses from the pump to the tensioner cylinders.
Before you operate the pump, ensure that all connections are secure. Ensure that all hoses are in good condition. Oil escaping under high pressure can cause personal injury.
Operate the pump until a pressure of 65 000 2400 kPa (9425 350 psi) is shown on the gauge. This force will put tension on the studs so that the nuts can be loosened. Reference: Special Instruction, SEHS9156, "Installation And Use Of The 4C-5818 Collar And Retainer Group"
Use the wrench in order to loosen the nuts until the nut contacts the adapters. The nuts should then be turned 90 degrees in the opposite direction.
Slowly release the hydraulic pressure.
Disconnect the hoses. Use Tooling (B) in order to lower the tensioner cylinder to the tray as the adapter nut is loosened.
Disconnect the link from Tooling (B). Move the tensioner cylinders out of the way of the main bearing cap.
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Connect the links on Tooling (B) to pins (2) on main bearing caps (9).
Use Tooling (B) in order to hold the main bearing caps so that the nuts can be removed.
Carefully lower the main bearing cap on the tray. If necessary, tap the main bearing cap with a rubber mallet in order to loosen the bearing cap.
Remove lower main bearing (8) from the bearing cap. Put an identification number on the lower half of the main bearing.
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The upper half of bearing (9) can be