Crankshaft and Bearings Removal

Tools Required

• J 6125-1B  Slide Hammer. See Special Tools .
• J 41818  Crankshaft Bearing Cap Remover

Fig 1: View Of CKP Sensor & Bolt
Courtesy of GENERAL MOTORS CORP.
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 (CKP) sensor bolt.
2. Remove the CKP sensor.
Fig 2: View Of Bearing Cap Bolts & Studs
Courtesy of GENERAL MOTORS CORP.
3. Remove the bearing cap M8 bolts.
4. Remove the bearing cap M10 bolts and studs.
Fig 3: View Of J 6125-1B & J 41818 Removing Main Bearing Cap
Courtesy of GENERAL MOTORS CORP.
NOTE: Refer to Fastener Notice .
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. See Special Tools .
Fig 4: View Of Crankshaft Main Bearing Caps
Courtesy of GENERAL MOTORS CORP.
7. Remove the bearing caps.
Fig 5: View Of Crankshaft & Engine Block
Courtesy of GENERAL MOTORS CORP.
8. Remove the crankshaft.
Fig 6: View Of Crankshaft
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Use care when handling the crankshaft. Avoid damage to the CKP sensor reluctor ring teeth. Nicks, burrs or other damage to the teeth may affect on-board diagnostics (OBD) II system performance.
9. Lay the crankshaft onto 2 wooden V-blocks or other protective surface.
Fig 7: View Of Crankshaft Bearings & Bearing Caps
Courtesy of GENERAL MOTORS CORP.
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 .