Transfer Cases are found on four-wheel drive and all-wheel drive vehicles. This gearbox divides the transmission power output between the rear differential and the front differential. Most transfer cases allow the front wheels to be disengaged and spin freely during normal driving conditions. When desired, power is transferred to all four wheels.
Transfer case fluid provides lubrication to gears, bearings, shafts, and other internal components. Heat, pressure and friction slowly breakdown the additives in the transfer case fluid. In addition, small particles of metal may come off the gears as they wear and these metal particles can mix with the fluid. Fluids can also become contaminated with water.
- draining the old transfer case
fluid, and
- filling the transfer case with
the manufacturer’s recommended type and quantity of new fluid.
Photo Credit: "troymckaskle"
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