C2.4 Tier 4 Final Engines for Caterpillar Built Machines Pistons and Connecting Rods - Assemble Caterpillar


Pistons and Connecting Rods - Assemble
`
1.1. Assembly Procedure

Assembly Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
1U-6683  Ring Expander 
387-1313  Piston Wrist Pin Tool 


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


  1. Ensure that all components are clean and free from wear and damage. If necessary, replace any components that are worn or damaged.


    Illustration 1g02836831

  2. Inspect the connecting rod for wear and damage. If necessary, replace connecting rod (5) or replace connecting rod bushing (9).

    Note: If connecting rod (5) or the bushing (9) for connecting rod pin are replaced, refer to Specifications, "Connecting Rods" for the correct procedure.

  3. Place the piston on a suitable surface with the crown upward. Use Tooling (B) to install connecting rod bushing (9) into connecting rod (5).


    Illustration 2g02723373


    Illustration 3g02723375

  4. Check connecting rod bushing (9). If necessary, install connecting rod bearings (6) into connecting rod (5) and connecting rod cap (8). Inspect bolts (7) or replace with new for assembly later.

  5. Lubricate the bore for the piston wrist pin (3) with clean engine oil.


    Illustration 4g02840445

  6. Place piston (1) on a suitable surface with the crown downward. Position connecting rod (5) with the forged markings on the piston and connecting rod in the correct orientation.

    Note: The mark (5A) on the connecting rod (5) must align with the fuel pump. Mark (1A) on the piston (1) must align with the flywheel.

  7. Install piston wrist pin (3) into piston (1). Install retaining ring (4).


    Illustration 5g02723365


    Illustration 6g02723368

  8. Position the connecting rod and piston (1) into a soft jaw vise. Use Tooling (A) to install three rings (2) onto piston (1).


    Illustration 7g06045622

  9. If the original piston is assembled, follow Step 9.a through Step 9.e to install the piston rings.

    1. Position the spring for the oil control ring into the oil ring groove in piston (1). The central wire must be located inside the end of the spring.

    2. Position the oil control ring with the manufacturing mark in the upward position as shown in Illustration 7. Use Tooling (A) to install over the piston and the spring.

      Note: Ensure that the central wire is 180 degrees from the ring gap.

    3. Use Tooling (A) to install the intermediate compression ring into the second groove in piston (1). The manufacturing mark must be upward. The chamfer on the inner face must be downward.

    4. Use Tooling (A) to install top the compression ring into the top groove in piston (1). The manufacturing mark must be upward.

    5. Position piston ring (2) gaps at 120 degrees away from each other.

  10. Repeat Step 2 through Step 9.e for the remaining piston and connecting rod assemblies.

End By:

  1. Install the pistons and the connecting rods.

Information System:

C2.4 Tier 4 Final Engines for Caterpillar Built Machines Pistons and Connecting Rods - Disassemble
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Rocker Shaft - Assemble
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Rocker Shaft - Disassemble
300.9D VPS Mini Hydraulic Excavator Machine Systems Fuel Injection Nozzle - Test
An Improved Double Grouser Track Shoe is Now Used On Certain Excavators {4170}
325F Excavator Engine Supplement Cooling System Package (Radiator, Hydraulic Oil Cooler, and Aftercooler) - Assemble
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Camshaft Gear - Remove and Install
320D2 GC Excavator Machine Systems Cab - Remove and Install
320D2 GC Excavator Machine Systems Window Wiper Motor - Remove and Install - Upper
320D2 GC Excavator Machine Systems Upper Frame and Undercarriage Frame - Connect
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Piston and Connecting Rods - Remove and Install
320D2 GC Excavator Machine Systems Upper Frame and Undercarriage Frame - Separate
320D2 GC Excavator Machine Systems Counterweight - Remove and Install
320D2 GC Excavator Machine Systems Fuel Tank - Remove and Install
325F Excavator Machine Systems Counterweight - Remove and Install
312F and 313F Excavator Machine System Specifications Hydraulic Tank and Filter
312F and 313F Excavator Machine System Specifications Air Conditioner Lines
312F and 313F Excavator Machine System Specifications Control Valve (Auxiliary)
316F Excavator Machine System Specifications Stick - 3.1 m (10.17 ft)
312D2 and 313D2 Excavators Fuses - Replace
320D2 GC Excavator Machine Systems Check Valve (Cooler Bypass) - Remove and Install
320D2 GC Excavator Machine Systems Hydraulic Lockout Control - Remove and Install
320D2 GC Excavator Machine Systems Seat - Remove and Install
320D2 GC Excavator Machine Systems Seat Support - Remove and Install