Crankshaft and Bearings Removal

Tools Required 

• J 6125-1B  Slide Hammer
• J 41818  Crankshaft Bearing Cap Remover

Important:  The crankshaft bearing caps are machined with the engine block for the proper clearances. Mark or identify each crankshaft bearing cap location and direction before removal. The crankshaft bearing caps MUST be installed to their original position and direction.

Do not use the bearing cap M8 side bolts again.

Remove the bearing cap M8 side bolts prior to cap removal.

1. Remove the crankshaft position sensor bolt.
2. Remove the crankshaft position sensor.
   Fig 1: Removing Bolt & Crankshaft Position Sensor

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3. Remove the crankshaft bearing cap M8 side bolts.
4. Remove the bearing cap M10 bolts and bolt/studs. Note the M10 bolt/stud locations.
   Fig 2: Removing Crankshaft Bearing Cap Side Bolts

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   CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
5. Install the J 41818  .

   Tighten 

   Tighten the J 41818  bolts to 11 N.m (100 lb in).

6. Install the J 6125-1B  to the J 41818  in order to remove the crankshaft bearing caps.
   Fig 3: Installing J 41818 & J 6125-1B

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7. Remove the bearing caps.
   Fig 4: Removing Bearing Caps

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8. Remove the crankshaft.
   Fig 5: Removing Crankshaft

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   CAUTION: Use care when handling the crankshaft. Avoid damage to the crankshaft position sensor reluctor ring teeth. Nicks, burrs or other damage to the teeth may effect On-Board Diagnostics (OBD) II system performance.
9. Lay the crankshaft onto two wooden V blocks or other protective surface.
   Fig 6: Laying Crankshaft Onto Protective Surface

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10. Remove the crankshaft bearings from the bearing caps and the engine block.
11. Mark, sort, or organize the crankshaft bearings so they may be installed to their original position and location. Refer to Separating Parts .
    Fig 7: Removing Crankshaft Bearings

    Courtesy of GENERAL MOTORS CORP.