Toyota
Jeep Cherokee
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Transmission and transfer case » NV3550 manual transmission » Diagnosis and testing
Transmission noise

Most manual transmissions make some noise during normal operation. Rotating gears can generate a mild whine that may only be audible at extreme speeds.

Severe, obviously audible transmission noise is generally the result of a lubricant problem. Insufficient, improper, or contaminated lubricant can promote rapid wear of gears, synchros, shift rails, forks and bearings. The overheating caused by a lubricant problem, can also lead to gear breakage.

    More about «Diagnosis and testing»:

    Low lubricant level

    Hard shifting

    Transmission noise

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