Hummer H2. Manual - part 1804

Fig. 399: Bearing Cap Bolt & Bearing Half 
Courtesy of GENERAL MOTORS CORP. 

1. Rotate the crankshaft until the journal/connecting rod to be measured is in the 12 o'clock position.  

2. Remove a bearing cap and bolts (1).  

3. Remove the bearing half (2).  

IMPORTANT: The crankshaft must be secure with no movement or rotation in order to 

obtain an accurate reading.

 

2004 Hummer H2 

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

  

4. Insert a piece of paper card stock onto the crankshaft journal.  

5. Install the bearing half (2) and cap and bolts (1). Refer to Fastener Tightening Specifications . 

Fig. 400: J 43690-2, J 43690-3, J 43690-101, 280310 & J 43690-5 
Courtesy of GENERAL MOTORS CORP. 

6. Install the following: 

1. J 43690-2 (5)  

2. J 43690-3 (4)  

3. J 43690-101 (2)  

 

2004 Hummer H2 

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

  

4. 280310 (3)  

5. J 43690-5 (1)  

Fig. 401: Identifying Swivel Base & Indicator 
Courtesy of GENERAL MOTORS CORP. 

7. Install the swivel base (1) and dial indicator (2).  

8. Adjust per the manufacturers instructions and measure the connecting rod bearing clearance. 

A connecting rod with a clearance in excess of 0.076 mm (0.003 in) is considered excessive. Service 
components as required. 

CRANKSHAFT BALANCER CLEANING AND INSPECTION 

 

2004 Hummer H2 

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

  

Fig. 402: View Of Crankshaft Balancer 
Courtesy of GENERAL MOTORS CORP. 

1. Clean the crankshaft balancer in solvent.  

2. Clean the belt grooves of all dirt or debris with a wire brush.  

3. Dry the crankshaft balancer with compressed air.  

4. Inspect the crankshaft balancer for the following: 

 

2004 Hummer H2 

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