C6.6 Engines for Caterpillar Built Machines Pistons and Connecting Rods - Remove Caterpillar


Pistons and Connecting Rods - Remove
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Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Name  Qty 
A(1)  9U-6198  Crankshaft Turning Tool 
A(2)  9U-7336  Housing 
5P-7305 Engine Turning Tool 
8S-2269  Ridge Reamer 
(1) The Crankshaft Turning Tool is used on the front pulley.
(2) This Tool is used in the aperture for the electric starting motor.

Start By:

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

  2. Remove the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump - Remove" for the correct procedure.

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

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.


  1. Use Tooling (A) to rotate the crankshaft until the crank pin is at the bottom center position.

  2. Use Tooling (B) to remove the carbon ridge from the top inside surface of the cylinder bore.


    Illustration 1g06021015


    Illustration 2g06021018
    Bolt (3a) are Torx
    Bolt (3b) are Bi-Hex

  3. Two types of bolts (3a) or (3b) may be installed.

  4. The connecting rod and the connecting rod cap should have an etched Number (X) on the side. The number on the connecting rod and the connecting rod cap must match. Ensure that connecting rod (1) and connecting rod cap (2) are marked for the correct location. If necessary, make a temporary mark on the connecting rod and the connecting rod cap to identify the cylinder number.

    Note: Do not stamp the connecting rod assembly. Stamping or punching the connecting rod assembly could cause the connecting rod to fracture.

  5. Remove bolts (3) and connecting rod cap (2) from connecting rod (1).


    Illustration 3g01341292

  6. Carefully push piston (4) and the connecting rod out of the cylinder bore. Lift piston (4) out of the top of the cylinder block.

    Note: Do not push on the fracture split surfaces of the connecting rod as damage may result.

  7. Repeat Steps 1 through 6 for the remaining pistons and connecting rods.

    Note: Fracture split connecting rods should not be left without the connecting rod caps installed. Temporarily install connecting rod cap (2) and bolts (3) to connecting rod (1) when the assembly is out of the engine. Ensure that the etched number on connecting rod cap matches the etched number on connecting rod . Ensure the correct orientation of the connecting rod cap . The locating tab for the upper bearing shell and the lower bearing shell should be on the same side. Tighten bolts (3) to a torque of 20 N·m (14 lb ft).

Information System:

C6.6 Engines for Caterpillar Built Machines Piston Cooling Jets - Remove and Install
C6.6 Engines for Caterpillar Built Machines Engine Oil Pan Plate - Remove and Install - Aluminum Oil Pan
C6.6 Engines for Caterpillar Built Machines Engine Oil Pan - Install - Cast Iron Oil Pan
C6.6 Engines for Caterpillar Built Machines Engine Oil Pan - Install - Aluminum Oil Pan
C6.6 Engines for Caterpillar Built Machines Engine Oil Pan - Remove - Aluminum Oil Pan
C6.6 Engines for Caterpillar Built Machines Engine Oil Pan - Remove - Cast Iron Oil Pan
C6.6 Engines for Caterpillar Built Machines Camshaft Bearings - Remove and Install
C6.6 Engines for Caterpillar Built Machines Camshaft Gear - Remove and Install
C6.6 Engines for Caterpillar Built Machines Camshaft - Remove and Install
C6.6 Engines for Caterpillar Built Machines Lifter Group - Remove and Install
C6.6 Engines for Caterpillar Built Machines Cylinder Head - Install
C6.6 Engines for Caterpillar Built Machines Cylinder Head - Remove
C6.6 Engines for Caterpillar Built Machines Pistons and Connecting Rods - Disassemble
C6.6 Engines for Caterpillar Built Machines Pistons and Connecting Rods - Assemble
C6.6 Engines for Caterpillar Built Machines Pistons and Connecting Rods - Install
C6.6 Engines for Caterpillar Built Machines Connecting Rod Bearings - Remove - Connecting rods in position
C6.6 Engines for Caterpillar Built Machines Connecting Rod Bearings - Install - Connecting rods in position
C6.6 Engines for Caterpillar Built Machines Crankshaft Main Bearings - Remove and Install - Crankshaft in position
C6.6 Engines for Caterpillar Built Machines Crankshaft - Remove
C6.6 Engines for Caterpillar Built Machines Crankshaft - Install
C6.6 Engines for Caterpillar Built Machines Crankshaft Timing Ring - Remove and Install
C6.6 Engines for Caterpillar Built Machines Crankshaft Gear - Remove and Install
C6.6 Engines for Caterpillar Built Machines Position Sensor (Fuel Injection Pump) - Remove and Install
C6.6 Engines for Caterpillar Built Machines Coolant Temperature Sensor - Remove and Install