3056E Industrial Engine Caterpillar


Pistons and Connecting Rods - Install

Usage:

3056E 356

Installation Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
A  1U-6684  Piston Ring Compressor 


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


  1. Thoroughly clean all of the components.

  2. Lubricate the piston and the cylinder liner with clean engine oil.

    Note: The piston and connecting rod are matched to a specific cylinder. Ensure that the connecting rod and pistons are installed in the correct cylinder.

  3. Rotate the crankshaft until the connecting rod journal is at the bottom center. Lubricate the connecting rod journal with clean engine oil.

  4. Lubricate the upper connecting rod bearing with clean engine oil.


    Illustration 1g00634006

  5. Install Tooling (A) on the piston.

    Note: Ensure that Tooling (A) is installed correctly and that the piston can easily slide from the tool.

    Note: The arrow or the "FRONT" mark that is on the top of the piston must be toward the front of the engine.

  6. Push the piston and the connecting rod assembly into the cylinder liner and onto the connecting rod journal.

  7. Align the tabs on the connecting rod bearings with the tab grooves on the connecting rod cap. Install the connecting rod bearing in the connecting rod cap.

  8. Lubricate the lower connecting rod bearing with clean engine oil.


    Illustration 2g00945433

  9. Install the connecting rod bearing and connecting rod cap (2).

  10. Install the bolts and new nuts (1) in the connecting rod. Tighten the nuts evenly to a torque of 125 N·m (92 lb ft).

    Note: Do Not reuse the old nuts in order to secure the connecting rod cap.

  11. Rotate the crankshaft in order to ensure that there is no binding.

  12. Repeat Steps 2 through 11 in order to install the remaining pistons and connecting rods.

  13. Refer to Testing and Adjusting, "Piston Height - Inspect" for the correct procedure on checking the height of the piston above the cylinder block.

End By:

  1. Install the piston cooling jets. Refer to Disassembly and Assembly, "Piston Cooling Jets - Remove and Install".

  2. Install the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump - Install".

  3. Install the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head - Install".
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