Chevrolet Silverado / GMC Sierra. Service manual — part 348

Bearing Removal.

2. Install the gaging plastic onto the connecting rod bearing journal. Install the gaging plastic

the full width of the journal.

3. Install the bearing cap, bearing half, and bolts. Refer to Piston, Connecting Rod, and

Bearing Installation.

4. Remove the bearing cap, bearing half, and bolts. Refer to Piston, Connecting Rod, and

Bearing Removal.

Fig. 408: Measuring Gaging Plastic
Courtesy of GENERAL MOTORS CORP.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

5. Using the scale supplied with the plastic gaging kit, measure the gaging plastic at its widest

area. Refer to Engine Mechanical Specifications.

Measuring Connecting Rod Bearing Clearance - Using J 43690/J 43690-100

J 43690 and J 43690-100 have been developed as a more accurate method to measure connecting
rod bearing clearances. See Special Tools. The instructions below provide an overview of tool
set-up and usage. For more detailed information, refer to the tool instruction sheets supplied by
the tool manufacturer.

Fig. 409: Identifying Rod Bearing Clearance Checking Tool

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Courtesy of GENERAL MOTORS CORP.

Rod Bearing Checking Tool. See Special Tools.

J 43690-20 Swivel Base (1)

J 43690-19 Dial Indicator (2)

J 43690-2 Base (3)

J 43690-5, J 43690-6 Handle (4)

J 43690-10, J 43690-11 Foot (5)

280307 Screw (6)

J 43690-1 Pivot Arm Assembly (7)

J 43690-3, J 43690-7, J 43690-8 Screws (8)

280319 Screw (9)

280311 Screw (10)

J 43690-17, J 43690-18 Adapter (11)

280310 Pin (12)

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 410: Identifying Rod Bearing Clearance Tool - Adapter Kit
Courtesy of GENERAL MOTORS CORP.

Rod Bearing Checking Tool - Adapter Kit. See Special Tools.

J 43690-104 Spacer (1)

J 43690-105 Retainer Plate (2)

505478 Bolt (3)

511341 Bolt (4)

J 43690-106 Retainer Plate (5)

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2