What is part-time 4×4? Does it lock all four Wheels?

I know what full time and all wheel drive do but what does part time 4×4 do? Does it lock all the wheels up so that all wheels are spinning at the same time?

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3 Responses to What is part-time 4×4? Does it lock all four Wheels?

  1. Travis October 2, 2010 at 12:05 am #

    Part-time 4×4 is a system that operates mainly in 2 wheel drive and engages into 4×4 when the situation requires.

  2. doane_nut October 2, 2010 at 12:05 am #

    Travis could not be more wrong. It locks the center differential so front and rear drive shafts are locked. The "Part Time" means you should only use it that part of the time you are on slippery surfaces. If the optional limited slip axles are installed it is even more critical not to use part time on dry roads since all the wheels will be "locked", but you will be turning etc, they need to slip a bit to keep from tearing up the drive train. "Full Time" 4wd can be driven on dry pavement and slippery surfaces

    http://www.wjjeeps.com/tcases.htm

  3. schnor_schnor October 2, 2010 at 12:05 am #

    it means that you put the vehicle into 4wd yourself whenever you need to. the vehicle is in 2wd until you shift into 4wd when needed. 4 wheel drive (4×4) is really only 2 wheel drive (one in the front, one in the back). in order to lock up all 4 wheels to have them spinning at the same time, you need to install locking differentials.