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. Lubricate crankshaft, crankshaft bearings and crankshaft bearing cap tie plate with engine oil.
Fig 1: Crankshaft
Courtesy of GENERAL MOTORS CORP.
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 CORP.
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 CORP.
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 CORP.
CAUTION: Refer to 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° . Use EN-470-B:  wrench .
   3. Tighten the inner crankshaft bearing cap tie plate bolts an additional 15° . Use EN-470-B:  wrench .
Fig 5: Outer Crankshaft Bearing Cap Tie Plate Bolts
Courtesy of GENERAL MOTORS CORP.
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° . Use EN-470-B:  wrench .
   3. Tighten the outer crankshaft bearing cap tie plate bolts an additional 15° . Use EN-470-B:  wrench .
Fig 6: Crankshaft Position Sensor
Courtesy of GENERAL MOTORS CORP.
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 And Installer
Courtesy of GENERAL MOTORS CORP.
NOTE: Lubricate the crankshaft rear oil seal.
12. Install the crankshaft rear oil seal (1) with EN-235-6:  installer (2).
Fig 8: Installer Tool
Courtesy of GENERAL MOTORS CORP.
13. Use EN-658-1:  installer (1) to strike the crankshaft rear oil seal.