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Transfer Case

By Jim Taddei, January 20, 2009

Used on 4WD vehicles, the transfer case takes the power (torque) created by the engine and transmits it to the front and rear drive shafts.

Symptoms of a Bad or Failing Transfer Case

  • Illumination of the "Service 4WD" light
  • Abnormal noise from center of vehicle while driving
  • Chattering type noise when turning
  • Fluid leak

Transfer Case Related Repair Advice

  • The transfer case contains gears and bearings that are lubricated by oil. All oils and fluids in a vehicle should be changed as recommended by the manufacturer, or more frequently if you use your vehicle to tow or carry heavy loads.
  • The correct fluid type should always be used when servicing the transfer case
  • The transfer case may be a one or two speed design. Two speed transfer cases are commonly found in trucks and have a low range, which is used in severe conditions.

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