Lower Crankcase Installation

Special Tools 

EN-45059  Angle Meter

For equivalent regional tools, refer to Special Tools .

1. Courtesy of GENERAL MOTORS COMPANY

   NOTE:

   • The block assembly and the lower crankcase surface must be free of contamination prior to applying the sealer.
   • The lower crankcase must be fastened to final torque specification within 20 minutes of applying the sealer.

   Apply a 3 mm (0.12 in) bead of sealer (2) on the lower crankcase. Refer to Adhesives, Fluids, Lubricants, and Sealers .

2. Apply an additionally 3 mm (0.12 in) bead of sealer about a length of 20 mm (0.90 in) in the outer regions (1, 3).
3. Apply an additionally 3 mm bead of sealer about a length of 5 mm (0.20 in), in the outer region (4).

4. Courtesy of GENERAL MOTORS COMPANY

   Install the lower crankcase (1).

5. Install 10 NEW crankshaft bearing cap tie plate bolts (2).

6. Courtesy of GENERAL MOTORS COMPANY

   CAUTION:

   Refer to Fastener Caution .

   CAUTION:

   Refer to Torque-to-Yield Fastener Caution .

   Tighten the 10 NEW lower crankshaft bolts in the sequence as shown, use the EN-45059  Angle Meter.

   1. First pass tighten to 50 N.m (37 lb ft).
   2. Second pass to 120 degrees.
   3. Third pass to 15 degrees.

7. Courtesy of GENERAL MOTORS COMPANY

   Install the 2 long lower crankcase bolts (1) and tighten to 25 N.m (18 lb ft).

8. Install the 8 short lower crankcase bolts (2) and tighten to 25 N.m (18 lb ft).