Hummer H2. Manual - part 1803

2. Tighten the connecting rod bolts a final pass to 75 degrees using the J 45059 . See Special Tools

and Equipment .

Refer to Piston, Connecting Rod, and Bearing Installation .

4. Remove the bearing cap, bearing, and bolts.

Fig. 396: Measuring Gaging Plastic On Crankshaft
Courtesy of GENERAL MOTORS CORP.

5. Measure the gaging plastic at its widest area using the scale supplied with the plastic gaging kit.

The connecting rod bearing clearance should be 0.023-0.076 mm (0.0009-0.003 in).

2004 Hummer H2

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

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. The instructions below provide an overview of tool set-up and usage. For more detailed information,
refer to the tool instruction sheets as supplied by the tool manufacturer. See Special Tools and Equipment .

Fig. 397: View Of J 43690
Courtesy of GENERAL MOTORS CORP.

Rod Bearing Checking Tool

J 43690-20 Swivel Base (1)

J 43690-19 Dial Indicator (2)

2004 Hummer H2

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

J 43690-2 Base (3)

J 43690-5, -6 Handle (4)

J 43690-10, -11 Foot (5)

280307 Screw (6)

J 43690-1 Pivot Arm Assembly (7)

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

280319 Screw (9)

280311 Screw (10)

J 43690-17, -18 Adapter (11)

280310 Pin (12)

2004 Hummer H2

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

Fig. 398: View Of J 43690-100
Courtesy of GENERAL MOTORS CORP.

Rod Bearing Checking Tool - Adapter Kit

J 43690-104 Spacer (1)

J 43690-105 Retainer Plate (2)

505478 Bolt (3)

511341 Bolt (4)

J 43690-106 Retainer Plate (5)

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)

2004 Hummer H2

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

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