How long does the transfer box output shaft seal last?
Auto repair

How long does the transfer box output shaft seal last?

08.11.2022 /

The transfer case output shaft oil seal is located on the transfer case of vehicles with all-wheel drive. This transfer case allows you to switch between XNUMXWD, Neutral, Low XNUMXWD and XNUMXWD. AT…

The transfer case output shaft oil seal is located on the transfer case of vehicles with all-wheel drive. This transfer case allows you to switch between XNUMXWD, Neutral, Low XNUMXWD and XNUMXWD. The housing consists of a chain drive and gear reducers. The transfer case uses a chain drive and reduction gear to transfer power from the transmission to either the rear differential or the front differential, depending on which wheel drive the driver chooses.

The transfer case output seal is designed to prevent fluid leakage from the transmission input shaft. It also helps prevent fluid from leaking from the front and rear output shafts into the differentials. This keeps everything lubricated so it works properly.

If one of these seals leaks, fluid will enter the gear and no longer be able to cool and lubricate the components. Eventually, internal parts overheat, seize, and fail. When this happens, the four-wheel drive will not work at all. It is recommended to change the transfer case fluid every 30,000 miles, so seals should be inspected for signs of wear at this time.

The transfer case does not have a fluid level indicator, so if you notice reddish colored fluid under the car, you may have a leaky seal. Because the transfer case output shaft seal can fail and wear out, it's important to know the symptoms so you can recognize them before they fail completely.

Signs that indicate the need to replace the transfer case output shaft seal include:

  • Difficult to shift into gear

  • Noise comes from all gears

  • Vehicle jumps out of low XNUMXWD mode

  • Have you noticed a reddish liquid under your car?

  • Squealing in the middle of the car while driving

  • The transfer case will not switch between two wheel drive and all wheel drive.

If any of the above problems occur, have a certified mechanic replace the faulty transfer case output shaft seal on your vehicle in order to fix any further problems with your vehicle.

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