Hummer H2. Manual — part 1811

2. Dry the components with compressed air.

Fig. 425: Inspecting Connecting Rod For Damage

CAUTION: Wear safety glasses in order to avoid eye damage.

2004 Hummer H2

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

Courtesy of GENERAL MOTORS CORP.

3. Inspect the connecting rod for the following conditions:

z

Twisting (1)

z

Proper fit of the connecting rod and cap mating surfaces (2)

z

Nicks or gouges in the bearing bore (3)

z

Damage to the bearing locating slots (4)

2004 Hummer H2

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

Fig. 426: Connecting Rod Bearing Bore
Courtesy of GENERAL MOTORS CORP.

4. Measure the connecting rod bearing bore (1) for an out-of-round condition. Refer to Engine Mechanical

Specifications .

2004 Hummer H2

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

Fig. 427: Measuring Piston Pin Diameter
Courtesy of GENERAL MOTORS CORP.

5. To determine full-floating piston pin-to-connecting rod bore clearance, use a micrometer and measure the

piston pin outside diameter (OD).

2004 Hummer H2

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