C7.1 Industrial Engine Pistons and Connecting Rods - Install Caterpillar


Pistons and Connecting Rods - Install
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1.1. Installation Procedure

Installation Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
A(1)  9U-6198  Crankshaft Turning Tool 
A(2)  9U-7336  Housing 
5P-7305 Engine Turning Tool 
1U-6684  Piston Ring Compressor 
227-4390  E12 Torx Socket 
8T-3052  Degree Wheel 
(1) The Crankshaft Turning Tool is used on the front pulley.
(2) This Tool is used in the aperture for the electric starting motor.

Note: Either Tooling (A) can be used. Use the Tooling that is most suitable.


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.



NOTICE

Discard all used Connecting Rod fasteners.


  1. If the connecting rod caps were temporarily installed, remove the connecting rod caps. If necessary, thoroughly clean all of the components.

  2. Apply clean engine oil to the cylinder bore, piston rings, outer surface of the piston and the bearing shells for the connecting rod.

    Note: Install the bearing shells for the connecting rods dry when clearance checks are performed. Refer to Disassembly and Assembly, "Bearing Clearance - Check" for the correct procedure. Apply clean engine oil to the bearing shells for the connecting rods during final assembly.

    Note: Ensure that the piston and the connecting rod assembly are installed in the correct cylinder.

  3. Use Tooling (A) to rotate the crankshaft until the crankshaft pin is at the bottom center position. Lubricate the crankshaft pin with clean engine oil.


    Illustration 1g02013213

  4. Install Tooling (B) onto piston (4).

    Note: Ensure that Tooling (B) is installed correctly and that piston (4) can easily slide from the tool.

    Note: The arrow on the top of the piston must be toward the front of the engine. The locating tab for the bearing shell of the connecting rod must be on the same side of the engine as the piston cooling jet.

  5. Carefully push the piston and the connecting rod assembly into the cylinder bore and onto the crankshaft pin.

    Note: Do not damage the finished surface of the crankshaft pin.



    Illustration 2g02383096

  6. Install connecting rod cap (2) onto connecting rod (1).

    Note: Ensure that etched number in Position (X) on connecting rod cap (2) matches etched number in Position (X) on connecting rod (1). Ensure the correct orientation of connecting rod cap (2). The locating tab for the upper bearing shell and the lower bearing shell should be on the same side.

    Note: Do not reuse the old bolts in order to secure the connecting rod cap.

  7. Install new bolts (3) to connecting rod (1). Use Tooling (C) in order to tighten the bolts evenly to a torque of 40 N·m (30 lb ft).

  8. Turn the bolts for an additional 120 degrees in a clockwise direction. Use Tooling (C) and Tooling (D) to achieve the correct final torque.

  9. Ensure that the installed connecting rod assembly has tactile side play. Rotate the crankshaft in order to ensure that there is no binding.

  10. Repeat Step 2 through Step 9 in order to install the remaining pistons and connecting rods.

End By:

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

  2. Install the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head - Install" for the correct procedure.

Information System:

C7.1 Industrial Engine Pistons and Connecting Rods - Disassemble
C7.1 Industrial Engine Pistons and Connecting Rods - Assemble
C7.1 Industrial Engine Piston Cooling Jets - Remove and Install
C7.1 Industrial Engine Lifter Group - Remove and Install - Hydraulic Lifter Group
C7.1 Industrial Engine Inlet Manifold Temperature Sensor - Remove and Install
C7.1 Industrial Engine Inlet and Exhaust Valves - Remove and Install
C7.1 Industrial Engine Inlet and Exhaust Valve Springs - Remove and Install
C7.1 Industrial Engine Inlet Air Control - Remove - NRS Inlet Air Mixer
C7.1 Industrial Engine Inlet Air Control - Install - NRS Inlet Air Mixer
C7.1 Engines for Caterpillar Built Machines Ignition Coil (ARD) - Remove and Install - Clean Emissions Module
C7.1 Industrial Engine Idler Pulley - Remove and Install - Grooved Idler Pulley
C7.1 Industrial Engine Idler Pulley - Remove and Install - Flat Idler Pulley
C7.1 Industrial Engine Pistons and Connecting Rods - Remove
C7.1 Industrial Engine Pressure Sensor (Cooled Exhaust Gas) - Remove and Install - Differential Pressure Sensor
C7.1 Industrial Engine Rear Power Take-Off (RPTO) - Install
C7.1 Industrial Engine Rear Power Take-Off (RPTO) - Remove
C7.1 Industrial Engine Refrigerant Compressor - Remove and Install
C7.1 Industrial Engine Relay (ARD Nozzle Heater) - Remove and Install - Clean Emissions Module
C7.1 Industrial Engine Rocker Shaft - Assemble
C7.1 Industrial Engine Rocker Shaft - Disassemble
C7.1 Industrial Engine Rocker Shaft and Pushrod - Install
C7.1 Industrial Engine Rocker Shaft and Pushrod - Remove
C7.1 Industrial Engine Soot Antenna - Remove and Install
C7.1 Industrial Engine Temperature Sensor (DPF) - Remove and Install - Temperature Sensor (DPF) and Flame Detection Sensor