Chevrolet Silverado / GMC Sierra. Service manual — part 349

J 43690-107 Cap (6)

J 43690-102 Foot (7)

J 43690-101 Pivot Arm Assembly (8)

J 43690-103 Adapter (9)

505439 Adapter (10)

Fig. 411: View Of Bearing Cap, Bolt & Bearing Half

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

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).

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.

IMPORTANT: The crankshaft must be secure, with no movement or

rotation, in order to obtain an accurate reading.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 412: View Of Special Tool Installed On Engine Block
Courtesy of GENERAL MOTORS CORP.

6. Install the following:

1. J 43690-2 (5)

2. J 43690-3 (4)

3. J 43690-101 (2)

4. 280310 (3)

5. J 43690-5 (1)

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 413: View Of Swivel Base & Dial 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

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2