Crankshaft and Bearing Installation

Special Tools

• EN-235-6  Installer from EN-235-D  Kit.
• EN-470-B  Angular Torque Wrench
• EN-658-1  Installer from EN-658  Kit.

For equivalent regional tools, refer to Special Tools .

1. Lubricate crankshaft, crankshaft bearings and crankshaft bearing cap tie plate with engine oil.
Fig 1: Crankshaft, Upper Crankshaft Bearings And Upper Crankshaft Thrust Bearing
Courtesy of GENERAL MOTORS COMPANY
2. Install the 4 upper crankshaft bearings (2) and the crankshaft thrust bearing (3).
3. Install the crankshaft (1).
Fig 2: Sealing Compound Application Area
Courtesy of GENERAL MOTORS COMPANY
NOTE:

The thickness of the sealing bead should be 2 mm (0.0787 in).

4. 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: Crankshaft Bearing Cap Tie Plate
Courtesy of GENERAL MOTORS COMPANY
NOTE:

The complete installation procedure should not take longer than 10 minutes.

5. Install the 4 lower crankshaft bearings (3) and the lower crankshaft thrust bearing (4).
6. Install the crankshaft bearing cap tie plate (2).
NOTE:

Do not reuse the old bolts.

7. Install the 10 NEW inner crankshaft bearing cap tie plate bolts (1).
Fig 4: 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 .

8. Tighten the 10 inner crankshaft bearing cap tie plate bolts in the sequence shown and to the following specifications:
   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. Use EN-470-B  wrench.
   3. Tighten the inner crankshaft bearing cap tie plate bolts an additional 15 degrees. Use EN-470-B  wrench.
Fig 5: Outer Crankshaft Bearing Cap Tie Plate Bolts
Courtesy of GENERAL MOTORS COMPANY
NOTE:

Do not reuse the old bolts.

9. Install the 12 NEW outer crankshaft bearing cap tie plate bolts (1) and tighten to the following specification:
   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. Use EN-470-B  wrench.
   3. Tighten the outer crankshaft bearing cap tie plate bolts an additional 15 degrees. Use EN-470-B  wrench.
Fig 6: Crankshaft Position Sensor, Bolt And Seal Ring
Courtesy of GENERAL MOTORS COMPANY
10. Install the crankshaft position sensor (1) and a NEW crankshaft position sensor seal ring (2).
11. Install the crankshaft position sensor bolt (3) and tighten to 8 N.m (71 lb in).
Fig 7: Crankshaft Rear Oil Seal
Courtesy of GENERAL MOTORS COMPANY
12. Slide the crankshaft rear oil seal (2) across the EN-235-6  installer (1) contained in EN-235-D  kit.
Fig 8: Crankshaft Rear Oil Seal And Installer
Courtesy of GENERAL MOTORS COMPANY
13. Install the crankshaft rear oil seal (1) with EN-235-6  installer (2) to the crankshaft.
Fig 9: Oil Seal Installer
Courtesy of GENERAL MOTORS COMPANY
NOTE:

Ensure that the crankshaft rear oil seal fits proper.

14. Use EN-658-1  installer (2) to strike the crankshaft rear oil seal (1)