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hi loc and lo loc

Discussion in 'The Garage' started by jagermiester, Jan 11, 2006.

  1. jagermiester

    jagermiester 1/2 ton status

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    On the new truck I have the t case shifter says

    hi loc
    hi
    neutral
    low
    low loc

    just like that. What is lo loc and hi loc. I am used to a 241 which has 4hi,2hi,n, and 4 low just like a 208 and 205.
     
  2. sled_dog

    sled_dog 1 ton status

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    It is a 203. 203 is a full time case. So you put it in hi or low and it will do 4 wheel sometimes in these gears. Hi loc, locks it in 4 wheel hi. low loc locks it in 4 low. Never had one to really experience it but this is what I know of it.
     
  3. goldwing2000

    goldwing2000 Guest

    Close, but not quite.

    Full-time 4wd: true

    because of that, there's actually a differential in the transfer case. Regular 4 hi and 4 lo allows the differential to work to adjust power between the front and rear axles, just like an axle differential allows the left and right wheels to turn at different speeds.

    Hi loc and Lo loc locks the t-case differential so you have full power to both axles.

    CAUTION: Do not use hi loc or lo loc on dry pavement!!!
     
  4. jagermiester

    jagermiester 1/2 ton status

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    Thanks so basically hi and lo are like multiple gearing limited slips in the t case. I guess I would drive around in hi and could drive in lo ( wouldnt but could) Why cant I drive in lo loc or hi loc wouldnt that be like driving with say a 241 in high or low.
     
  5. goldwing2000

    goldwing2000 Guest

    When using hi loc and lo loc, it makes it just like a part-time case.
    You never drive a part-time case in 4wd on pavement.
    It causes bad things to happen. :doah:

    Gears bind, chains break, u-joints pop... it's not pretty.

    Unless you have front lockout hubs. Then it doesn't much matter.
     
  6. jagermiester

    jagermiester 1/2 ton status

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    I have front lock out hubs. So Now I under stand. In hi and lo it will have power to both axles until one loses traction and then sends it all to the other like a open diff right?
     
  7. goldwing2000

    goldwing2000 Guest

    Right.
     
    Last edited by a moderator: Jan 11, 2006
  8. MTBLAZER89

    MTBLAZER89 3/4 ton status GMOTM Winner

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    Hey Shaun, If you have locking hubs chances are that it's been converted to part time. Are they unlocked? with a full time 203 if you unlock the hubs it will send all the power to the front driveshaft..kinda like jacking up one tire with an open diff. You wont move:D
     
  9. 6.2Blazer

    6.2Blazer 1/2 ton status

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    Hi-loc and Lo-loc on a 203 would act the exact same as shifting a 241, 208, or 205 into high range 4wd or low range 4wd.

    The regular Hi or Lo range in a 203 keeps it in 4wd but there is a open diff (no limited slip!) that allows you to turn on hard surfaces without the tire scrubbing, squealing, and hopping effect you would have with other t-cases in 4wd, or that case in one of the loc modes.

    As already mentioned, if you have locking hubs installed and they are on the "free" position you should not able to move in the Hi or Lo position......unless the t-case has been converted to part time.
     
  10. jagermiester

    jagermiester 1/2 ton status

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    I will check that today. if it is been converted does that mean the hi and low are now both just 2wd, hi loc is 4hi, and lo loc is 4 lo.
     
  11. divorced

    divorced 3/4 ton status

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    Yes.





    ;)
     
  12. jagermiester

    jagermiester 1/2 ton status

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    Thanks now I know
     
  13. goldwing2000

    goldwing2000 Guest

    And knowing is half the battle!

    GI JOOOOOE!!
     

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