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DIAGNOSIS & TESTING Vehicle Inspection Inspect the rear axle for the following: • Check the rear axle for loose bearings. • Check the rear axle hub for any damage or excessive runout. Shudder Or Vibration During Acceleration This problem could be a result of: • A worn or damaged half shaft inner tripod joint (4x4). • Improper wheel alignment. Vehicle Inspection Inspect the following for leaks or damage: • Check for grease in the vicinity of the inboard tripod joint and outboard CV joint (4x4). • Check the inner or outer joint seal boot or seal boot clamp for damage (4x4). Noise Or Vibration On Turns A clicking noise or a vibration in turns could be caused by one of the following conditions: • Damaged outer CV joint or damaged CV seal boot or seal boot clamps (4x4). • Damaged inner CV joint or damaged CV seal boot or seal boot clamps (4x4). • Noise may also be caused by another component of the vehicle coming in contact with the half shafts (4x4). NOTE : Clunking Noise During Acceleration This noise may be a result of one of the following conditions: • A torn seal boot on the inner or outer joint of the half shaft assembly (4x4). • A loose or missing clamp on the inner or outer joint of the half shaft assembly (4x4). • A damaged or worn half shaft CV joint (4x4). Shudder Or Vibration During Acceleration This problem could be a result of: • A worn or damaged half shaft inner tripod joint (4x4). • Improper wheel alignment. Vibration At High Speeds This problem could be a result of: • Foreign material (mud, etc.) packed on the backside of the wheel(s). • Out of balance tires or wheels. • Improper tire or wheel runout. Visual Inspection For Fluid Leaks (4x4) This problem could be a result of: • Where seals are used: There should be no appearance of fluid leakage or abnormal abrasions. • Where sealant is applied: There should be no appearance of fluid leakage or fluid seepage. • Where attaching bolts are used, fluid-fill and fluid-draining plugs are used: There should be no appearance of fluid leakage, fluid seepage or loose bolts. • The housing: There should be no appearance of fluid leakage or fluid seepage. 09
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