3500 Engines Connecting Rod Bearings - Remove and Install Caterpillar


Connecting Rod Bearings - Remove and Install
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1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
9S-9082  Engine Turning Tool 

Start By:

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


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


  1. Use Tooling (A) to turn the flywheel in order to access the connecting rod cap that will be removed.


    Illustration 1g00913801

    Note: Inspect the connecting rod and connecting rod cap for the proper identification mark. The connecting rod and the connecting rod cap should have an etched number on the side. The number should match the cylinder number. Mark the connecting rod and the connecting rod cap, if necessary.

  2. Remove bolts (1) and connecting rod cap (2) from the crankshaft.

  3. Push the connecting rod away from the crankshaft. Remove the upper half of the connecting rod bearing.

    Note: Be careful not to damage the cylinder liner or the crankshaft journal.

  4. Remove the lower half of the connecting rod bearing from connecting rod cap (2).

Installation Procedure

Table 2
Required Tools 
Tool  Part Number  Part Description  Qty 
9S-9082  Engine Turning Tool 
  Loctite Moly 50 


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


Note: Install the connecting rod bearings dry when clearance checks are performed. Refer to Disassembly and Assembly, "Bearing Clearance - Check". Apply clean engine oil on the connecting rod bearings for final assembly.

  1. Use Tooling (A) to rotate the crankshaft until the connecting rod journal is at the bottom center.


    Illustration 2g00913801


    Illustration 3g03746219
    Section view of connecting rod showing torque sequence. Chamfer (3) and dowel (4) can be used to reference orientation.

  2. Install the upper half of the connecting rod bearing on the connecting rod . Ensure that the connecting rod bearing is installed so that the bearing tab fits into the notch in the connecting rod. Coat the connecting rod bearing with clean engine oil. Position the connecting rod onto a journal of the crankshaft.

  3. Install the lower half of the connecting rod bearing on connecting rod cap (2). Ensure that the connecting rod bearing is installed so that the bearing tab fits into the notch in the connecting rod cap. Coat the connecting rod bearing with clean engine oil.

    Note: The number that is on the side of the connecting rod caps must be installed next to the corresponding number that is on the side of the connecting rod. Install the chamfered side of the connecting rod cap next to the thrust surface of the crankshaft.

  4. Apply Tooling (B) to the threads, the shank, and the seat of bolts (1).

  5. Place connecting rod cap (2) into position. Install bolts (1). Use the following procedure to tighten the bolts:

    1. Tighten Bolt (A) and Bolt (B) to a torque of 90 ± 5 N·m (65 ± 4 lb ft).

    2. Tighten Bolt (C) and Bolt (D) to a torque of 90 ± 5 N·m (65 ± 4 lb ft).

    3. Tighten Bolt (C) and Bolt (D) again to a torque of 90 ± 5 N·m (65 ± 4 lb ft).

    4. Place an index mark on the bolts and the connecting rod cap. Tighten each bolt for an additional 90 ± 5 degrees (1/4 turn).

  6. Rotate the crankshaft in order to ensure that the crankshaft turns freely.

End By:

  1. Install the engine oil pump.

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