Hummer H2. Manual - part 1733

the crankshaft.  

4. Remove the tool and reverse the installation tool. 

Position the larger end of the installer against the front of the balancer. 

5. Use a wrench and hold the hex end of the threaded rod.  

6. Use a second wrench and rotate the installation tool nut clockwise until the balancer is installed 

onto the crankshaft.  

7. Remove the balancer installation tool. 

 

2004 Hummer H2 

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

  

Fig. 130: Balancer Proper Installation Position 
Courtesy of GENERAL MOTORS CORP. 

3. Install the used crankshaft balancer bolt. 

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

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

  

Tighten: Tighten the USED crankshaft balancer bolt to 330 N.m (240 lb ft). 

4. Remove the used crankshaft balancer bolt. 

5. Measure for a correctly installed balancer. 

If the balancer is not installed to the proper dimensions, install the J 41665 . See Special Tools and 
Equipment . 

6. Install a NEW crankshaft balancer bolt. 

Tighten:  

1. Tighten the crankshaft balancer bolt a first pass to 50 N.m (37 lb ft).  

2. Tighten the crankshaft balancer bolt a second pass to 140 degrees using the J 45059 . See Special 

Tools and Equipment .  

7. Remove the J 42386-A .  

8. Install the starter motor. Refer to Starter Motor Replacement .  

9. Install the fan shroud. Refer to Fan Shroud Replacement .  

10. Install the accessory drive belt (if not equipped with A/C). Refer to Drive Belt Replacement - 

Accessory .  

11. Install the A/C drive belt (if equipped). Refer to Drive Belt Replacement - Air Conditioning .  

12. Perform the crankshaft position (CKP) system variation learn procedure. Refer to CKP System 

Variation Learn Procedure .  

CRANKSHAFT FRONT OIL SEAL REPLACEMENT 

Tools Required 

J 41478 Crankshaft Front Oil Seal Installer. See Special Tools and Equipment . 

Removal Procedure 

IMPORTANT: The nose of the crankshaft should be recessed 2.4-4.48 mm (0.094-0.176 

in) into the balancer bore.

 

2004 Hummer H2 

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

  

Fig. 131: Crankshaft Front Oil Seal 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .  

2. Remove the crankshaft oil seal (1) from the front cover.  

Installation Procedure 

 

2004 Hummer H2 

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