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Transfer case

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by JeremyK5, Oct 12, 2001.

  1. JeremyK5

    JeremyK5 1/2 ton status Premium Member

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    When I'm driving 35mph+, and I use the gas pedal, I get a whining noise from my (203) transfer case. If I let off the gas it instantly goes away. The faster I go, the louder it gets, until about 60mph. What part might cause it, and how worried should I be?
     
  2. JeremyK5

    JeremyK5 1/2 ton status Premium Member

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  3. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Is it converted to part time or still full time?
    If it's still full time I would check your front driveshaft CV. They will make noise loaded and be quiet unloaded. Tires evenly worn?
    Could be loose chain. Get on a steep hill and put it in low (not lock) and floor it. If you hear a bang or 2 it's the chain jumping teeth.
    If it's part time how often do you put it LOC to refill the resivior? Your supose to do that for a few miles ever 200 or so miles. If you haven't been doing that get under the truck and grab the yoke on the back of the case and pull out and push in. a slight and I mean slight amount of movent is normal but if it is really moving then the tail shaft bearing is probably shot from lack of oil. No up and down movement should be felt either. It possible that there be other damage in the roller bearing that the upper chain gear rides on.

    I don't need no damn shop manual, I got a pornographic memory.
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    Grim-Reaper
     
  4. JeremyK5

    JeremyK5 1/2 ton status Premium Member

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    It's still fulltime, so I guess I'll try replacing the Cv joints. Any idea on how hard it will be to change them? How would having uneven tire wear cause problems, and how important is it to keep the same tire psi in the rear as in the front?
     
  5. JunkYardCrawler

    JunkYardCrawler 1/2 ton status

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    well i thing it would be important beacuse if they are at diff diamiters then they will be trying to turn at diff speeds. no on a 2wd thats no prob. but in 4wd where al l4 wheels want to trun the same then it is.

    Going nowhere everybody is a Moto Psycho
    Got my wheels in motion and i got a path to beat
     
  6. JunkYardCrawler

    JunkYardCrawler 1/2 ton status

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    well i think it would be important beacuse if they are at diff diamiters then they will be trying to turn at diff speeds. no on a 2wd thats no prob. but in 4wd where al l4 wheels want to trun the same then it is.

    Going nowhere everybody is a Moto Psycho
    Got my wheels in motion and i got a path to beat
     

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