| Malfunction (symptoms) |
Probable Causes |
Corrective action (remedies) |
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| Noisy differential |
Insufficient lubricant |
Check for leaks and correct as necessary; refill with correct amount of lubricant |
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Transmission out of alignment |
Inspect transmission alignment; correct as necessary. |
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Sprung output shaft |
Replace |
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Bearing defective |
Replace |
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| Lost of lubricant |
Lubricant level too high |
Drain excess lubricant by removing drain plug and allowing lubricant to drain down to lower edge of filler plug hole. (Too much lubricant in differential will cause pressure to build up and blow lubrincant past seals and breather plug air vent.) |
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Worn output shaft oil seal |
Replace with new seal. |
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Cracked housing |
Replace |
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Worn drive-pinion shaft cover oil seal |
Replace with new seal. |
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Clogged breather-plug air vent |
Remove obstructions |
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Loose housing bolts or housing cover screws |
Tighten bolts. Fill to correct level with proper lubricant. |
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| Differential overheating |
Lubricant level too low |
Replenish |
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Incorrect grade of lubricant |
Drain and refill differential with correct amount of proper lubricant |
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Excessively worn gears |
Replace differential. |
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