Hummer H2. Manual — part 1856

Fig. 587: Crankshaft & Engine Block
Courtesy of GENERAL MOTORS CORP.

4. Install the crankshaft.

NOTE:

To maintain proper crankshaft end play, use extreme care during
crankshaft installation. Avoid scoring or damaging the thrust bearing.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 588: View Of Bearing Caps
Courtesy of GENERAL MOTORS CORP.

5. Install the crankshaft bearing caps, with bearings, into the engine block.

6. Start the M10 bolts and studs.

7. Tap the bearing caps into place with a plastic-face hammer.

IMPORTANT: The bearing caps must be installed in the proper location and direction.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 589: Bearing Cap Bolts & Studs
Courtesy of GENERAL MOTORS CORP.

8. Install the NEW M8 bearing cap side bolts.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 590: Main Cap Bolt Hole Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

9. Tighten the bearing cap M10 bolts and studs.

Tighten: Tighten the M10 bolts (1-10) a first pass in sequence to 20 N.m (15 lb ft).

10. Using a plastic faced hammer, tap the crankshaft rearward then forward to align the thrust bearings.

Tighten:

1. Tighten the M10 bolts (1-10) a final pass in sequence 80 degrees using the J 45059 . See Special

Tools and Equipment .

2. Tighten the M10 studs (11-20) a first pass in sequence to 20 N.m (15 lb ft).

3. Tighten the M10 studs (11-20) a final pass in sequence 51 degrees using the J 45059 . See Special

Tools and Equipment .

NOTE:

Refer to Fastener Notice in Cautions and Notices.

IMPORTANT: To properly align the crankshaft thrust bearings, the final thrust of the

crankshaft MUST be in the forward direction.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2