G3500 Engines Caterpillar

Crankshaft Main Bearings - Remove

Usage:

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⁽¹⁾	Use with 19.0 mm (3/4 inch) main bearing cap bolts.
⁽²⁾	Use with 22.2 mm (7/8 inch) main bearing cap bolts.

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat^® products. Dispose of all fluids according to local regulations and mandates.

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Remove covers (1) from the side of the engine.
Use Tooling (A) to rotate the crankshaft. Rotate the crankshaft to position the counterweight on the top.
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Illustration 2 g00930580
Use Tooling (B) and loosen the bolts for the main bearing cap.
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Illustration 3 g00930589
Remove the two outer bolts for main bearing cap (2) and install Tooling (D). Install Tooling (D) until Tooling (D) bottoms out in the block. Adjust nuts (3) on Tooling (D) until nuts (3) make contact with main bearing cap (2). Remove the two inner bolts for main bearing cap (2).
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Illustration 4 g00930593
Loosen nuts (3) evenly to lower main bearing cap (2). Lower main bearing cap (2) to the end of the bolt on Tooling (D) to gain access to the main bearings.
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Illustration 5 g00930603
Use Tooling (A) and rotate the crankshaft until the oil hole of the crankshaft journal is just below the side of the main bearing without the tab. Install Tooling (C) and remove the upper bearing.
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Illustration 6 g00930606
Remove lower main bearing (4) from main bearing cap (2).