Hummer H2. Manual - part 948

INTERMITTENT NOISE 

Intermittent Noise 

CONSTANT NOISE 

Constant Noise 

NOISY ON TURNS 

Noisy on Turns 

WHEEL BEARING WEAR - FRONT DRIVE AXLE (TAPERED) 

Tapered Roller Bearing Diagnosis 

Consider the following factors when diagnosing bearing condition: 

z

General condition of all parts during disassembly and inspection.  

z

Classify the failure with the aid of the illustrations.  

z

Determine the cause.  

z

Make all repairs following recommended procedures.  

Abrasive Roller Wear 

Checks

Action

Warped ring gear

Replace the ring gear. Refer to Differential Carrier Assembly - Disassemble .

Loose differential 
case assembly

Set the differential case assembly to the proper preload and backlash. Refer to 
Differential Carrier Assembly - Assemble and Backlash Inspection and 
Adjustment .

Checks

Action

Flat spot on the pinion or the 
ring gear teeth

Replace the pinion and the ring gear. Refer to Differential Carrier 
Assembly - Disassemble .

Flat spot on the pinion bearing

Replace the bearing. Refer to Differential Carrier Assembly - 
Disassemble .

Worn pinion splines

Replace the pinion. Refer to Differential Carrier Assembly - 
Disassemble .

Checks

Action

Worn differential side gears 
and pinions

Replace the differential side gears and pinions. Refer to Differential 
Case Assembly Disassemble .

Worn differential spider

Replace the spine gears. Refer to Differential Case Assembly 
Disassemble .

Worn axle shaft splines

Replace the axle shaft. Refer to Inner Shaft and/or Housing 
Replacement - Front Drive Axle .

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Front Drive Axle - Hummer H2

  

Fig. 2: Abrasive Roller Wear 
Courtesy of GENERAL MOTORS CORP. 

Pattern on the races and the rollers caused by fine abrasives. Clean all of the parts and the housings. Check the 
seals and the bearings. Replace any leaky, rough, or noisy bearings. 

Abrasive Step Wear 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Front Drive Axle - Hummer H2

  

Fig. 3: Abrasive Step Wear 
Courtesy of GENERAL MOTORS CORP. 

Pattern on the roller ends caused by fine abrasives. Clean all of the parts and the housings. Check the seals and 
the bearings. Replace any leaky, rough, or noisy bearings. 

Galling 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Front Drive Axle - Hummer H2

  

Fig. 4: Galling 
Courtesy of GENERAL MOTORS CORP. 

Metal smears on the roller ends due to overheating, lubricant failure, or lubricant overload. Replace the bearing. 
Check the seals. Check for proper lubrication. 

Etching 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Front Drive Axle - Hummer H2