Crankshaft And Bearing Removal

Special Tools

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

Equivalent regional tools: Special Tools 

Fig 1: CKP Sensor, Bolt And O-Ring
Courtesy of GENERAL MOTORS COMPANY
NOTE:
• 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.
• All M8, and M10 bolts are to be discarded and replaced with NEW.
1. Remove the crankshaft position (CKP) sensor bolt (702).
2. Remove the CKP sensor (701).
3. Remove the O-ring (750) from the sensor, as required.
Fig 2: Bearing Cap Bolts And Studs
Courtesy of GENERAL MOTORS COMPANY
4. Remove and discard the crankshaft bearing cap M8 bolts (127).
5. Remove and discard the bearing cap M10 bolts (129) and studs (128).
Fig 3: Using Special Tools To Remove Crankshaft Bearing Caps
Courtesy of GENERAL MOTORS COMPANY
CAUTION:

Refer to Fastener Caution .

6. Install the J-41818  remover (2) and tighten to 11 N.m (100 lb in).
7. Install the J-6125-1B  hammer (1) to the J-41818  remover (2) in order to remove the crankshaft bearing caps.
Fig 4: Crankshaft Main Bearing Caps
Courtesy of GENERAL MOTORS COMPANY
8. Remove the crankshaft bearing caps.
Fig 5: Crankshaft And Engine Block
Courtesy of GENERAL MOTORS COMPANY
9. Remove Crankshaft
Fig 6: Crankshaft
Courtesy of GENERAL MOTORS COMPANY
NOTE:

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.

10. Lay the crankshaft onto 2 wooden V-blocks or other protective surface.
Fig 7: Crankshaft Bearings And Bearing Caps
Courtesy of GENERAL MOTORS COMPANY
11. Remove the crankshaft bearings from the bearing caps and the engine block.
12. Mark, sort, or organize the crankshaft bearings so they may be installed to their original position and location. Refer to Separating Parts .