3176C and 3196 Marine Engines Caterpillar


Crankshaft Main Bearings - Install

Usage:

3196 2XR

Installation Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     2P-5518     Bearing Tool     1    
B     8T-5096     Dial Indicator Group     1    


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


Note: Place clean engine oil on the crankshaft main bearings prior to assembly. Ensure that the tabs on the back side of the crankshaft main bearings fit in the grooves of the crankshaft main bearing caps and the cylinder block.


NOTICE

Ensure that the crankshaft main bearings are installed in the correct locations. Two different part numbers are used in quantities of three and four. The part number having the quantity of four is to be installed on crankshaft main bearings 2, 3, 5, and 6. The part number having the quantity of three is to be installed on crankshaft bearing 1, 4, and 7. The thrust plate is to be installed on the center crankshaft main bearing only.





    Illustration 1g00516920



    Illustration 2g00516919

  1. Use Tool (A) and install the new upper halves of crankshaft main bearings (3) in the cylinder block. This half of the bearing has an oil hole. Do not put oil on the back of the crankshaft main bearing.



    Illustration 3g00516918

  1. Install the new lower halves of the crankshaft main bearings in crankshaft main bearing caps (2). Do not put oil on the back of the crankshaft main bearing.


    NOTICE

    Crankshaft main bearing caps should be installed with the part number toward the right side of the engine. Crankshaft main bearing caps are to be identified by stamped numbers 1 through 7 located on the bottom surface. The thrust plate is used on the center crankshaft main bearing only.


  1. Place crankshaft main bearing caps (2) in position on the cylinder block. Place clean engine oil or Molylube on the bolt threads and the washer face. Install bolts (1) .

  1. Tighten the bolts to a torque of 95 ± 5 N·m (70 ± 4 lb ft). Place an index mark on each bolt head. Tighten each bolt for an additional 90 ± 5 degrees (1/4 turn).



    Illustration 4g00517003

  1. Check the end play of the crankshaft with Tool (B). The end play must be 0.10 mm (.004 inch) to 0.50 mm (.020 inch).

    Note: The crankshaft end play is controlled by crankshaft thrust bearings (4). Thrust bearings (4) are located at the center of the crankshaft.

End By: Install the oil pan.

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