Crankshaft and Bearing Installation

Special Tools

• EN-235-6  Installer
• EN-470-B  Angular Torque Wrench
• EN-658-1  Installer

For equivalent regional tools, refer to Special Tools .

1. Install a NEW crankshaft position sensor reluctor ring (1) and the 3 bolts (2).
   Fig 1: Crankshaft Position Sensor Reluctor Ring And Bolts

   Courtesy of GENERAL MOTORS COMPANY
2. Tighten the 3 bolts (2) to 10 N.m (89 lb in).
3. Lubricate crankshaft, crankshaft bearings and crankshaft bearing cap tie plate with engine oil.
4. Install the 4 upper crankshaft bearings (2) and the crankshaft thrust bearing (3).
   Fig 2: Crankshaft, Upper Crankshaft Bearings And Upper Crankshaft Thrust Bearing

   Courtesy of GENERAL MOTORS COMPANY
5. Install the crankshaft (1).
6. Apply sealing compound (1) to the outer rim of the groove on the crankshaft bearing cap tie plate. Refer to Adhesives, Fluids, Lubricants and Sealers .
   Fig 3: Sealing Compound Application Area

   Courtesy of GENERAL MOTORS COMPANY
   NOTE: The thickness of the sealing bead should be 2 mm (0.0787 in).
7. Install the 4 lower crankshaft bearings (3) and the lower crankshaft thrust bearing (4).
   Fig 4: Crankshaft Bearing Cap Tie Plate

   Courtesy of GENERAL MOTORS COMPANY
   NOTE: The complete installation procedure should not take longer than 10 minutes.
8. Install the crankshaft bearing cap tie plate (2).
9. Install the 10 NEW inner crankshaft bearing cap tie plate bolts (1).
   NOTE: Do not reuse the old bolts.
10. Tighten the 10 inner crankshaft bearing cap tie plate bolts in the sequence shown and to the following specifications:
    Fig 5: Inner Crankshaft Bearing Cap Tie Plate Bolts Tightening Sequence

    Courtesy of GENERAL MOTORS COMPANY
    CAUTION: Refer to Fastener Caution .
    CAUTION: Refer to Torque-to-Yield Fastener Caution .
    1. Tighten the inner crankshaft bearing cap tie plate bolts to 25 N.m (18 lb ft).
    2. Tighten the inner crankshaft bearing cap tie plate bolts an additional 60 degrees, using the EN-470-B  wrench.
    3. Tighten the inner crankshaft bearing cap tie plate bolts an additional 15 degrees, using the EN-470-B  wrench.
11. Install the 12 NEW outer crankshaft bearing cap tie plate bolts (1) and tighten to the following specification:
    Fig 6: Outer Crankshaft Bearing Cap Tie Plate Bolts

    Courtesy of GENERAL MOTORS COMPANY
    NOTE: Do not reuse the old bolts.
    1. Tighten the outer crankshaft bearing cap tie plate bolts to 10 N.m (89 lb in).
    2. Tighten the outer crankshaft bearing cap tie plate bolts an additional 60 degrees, using the EN-470-B  wrench.
    3. Tighten the outer crankshaft bearing cap tie plate bolts an additional 15 degrees, using the EN-470-B  wrench.
12. Install the crankshaft position sensor (1) and a NEW crankshaft position sensor seal ring (2).
    Fig 7: Crankshaft Position Sensor, Bolt And Seal Ring

    Courtesy of GENERAL MOTORS COMPANY
13. Install the crankshaft position sensor bolt (3) and tighten to 8 N.m (71 lb in).
14. Install the crankshaft rear oil seal (1) with EN-235-6  installer (2).
    Fig 8: Crankshaft Rear Oil Seal And Installer

    Courtesy of GENERAL MOTORS COMPANY
    NOTE: Lubricate the crankshaft rear oil seal.
15. Use EN-658-1  installer (1) to strike the crankshaft rear oil seal.
    Fig 9: Installer Tool

    Courtesy of GENERAL MOTORS COMPANY