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Question: NP203

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by gregm, Aug 27, 2001.

  1. gregm

    gregm Newbie

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    I'm a novice. Have used my '73 K5 Blazer on the hunting lease for several years. I need to know operating procedures for shifting transfer case. It is real hard to move at all. A freind said shift on fly, that just grinds real good. I brought truck home to work on this and steering box but don't know if it is even working. I unlocked the front hubs and could not even get any gear. I was able to put it back in 4w lo and lock the hubs to get home. Don't think the rears are even working. I know how to adjust linkage and am going to do this first but I still need general information on how to change from lo to hi etc... with motor running or not, in park or neutral??? Please help.
     
  2. Waxer

    Waxer 1/2 ton status Author

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    Shift it with motor running, tranny in nuetral.

    Crawlin the rocks with my K5
    <a target="_blank" href=http://www.rockreadyk5.com>http://www.rockreadyk5.com</a>
     
  3. Wheels

    Wheels 1/2 ton status

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    If it's an auto tranny, use park. In neutral, an auto has some residual spinning that may hinder the syncros in the t-case from meshing. Also check and see if there is any wear indicated in the shifter and/or linkage (noticeable). Shifting on the fly with a 203 may grenade it since it was not designed to do this.
     
  4. Jonathan

    Jonathan 1/2 ton status

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    mine used to do this. you might try spraying your linkage real good with a hose and then spraying it down with wd-40. some times mine won't shift unless it's in neutral and the motor is off. also check your linkage for alot of play.

    77 Blazer, 350, NP203, K&N, 31-inch Cooper Discoverers
    <a target="_blank" href=http://community.webshots.com/user/jonathandwill>http://community.webshots.com/user/jonathandwill</a>
     

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