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Differential Overfilled
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Brake piston seals leaking.
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Repair brake as necessary.
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Excessive Differential/Axle Noise
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Low oil level in differential.
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Add oil to differential. Remove drain plug and inspect for metal particles. Repair as necessary.
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Brake dragging.
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Run Brake Drag Operational Check.
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Pinion bearing.
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Remove and inspect pinion.
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Gear mesh pattern between ring and pinion gear incorrect.
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Remove pinion gear housing and inspect ring and pinion gear.
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Axle bearing.
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Check axle shaft movement in axle housing. Repair as necessary.
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Mechanical malfunction in axle planetary.
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Remove differential, inspect, and repair.
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Turbo boost oil circuit.
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Clear circuit.
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Oil Seeping From Outer Axle Seal
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Excessive axle end play.
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Repair as necessary.
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Worn outer bearing.
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Repair as necessary.
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Differential overfilled with oil.
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Check drain lines for clogs.
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Internal axle seal worn.
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Repair as necessary.
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Excessive Axle Vibration or Noise
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Lack of lubrication.
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Lubricate with proper grade of grease. (See Fuels and Lubrication chapter.)
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