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Detroit locker......is this normal?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BLzr4x4ngkid, Feb 28, 2001.

  1. BLzr4x4ngkid

    BLzr4x4ngkid 1/2 ton status

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    I think this is normal, but when I get going from a stop or just speeding up, the rear seems to "bump." I figured it's probably the locker, because the tranny's not slipping. But what worries me is, when I let off the gas, it makes a noise like a ring or something has fallen off. I'd kind of like to know what to look for, considering I didn't put the locker in the axle.

    "Don't hit me with them negative waves so early in the morning." Odd Ball--Kelly's Hereos
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

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    The Detroit is very popular for the noise they make while driving. They are known to BANG while driving. This is normal according to the TracTech/Detroit Locker owners manual. They say to expect and get used to the noise it makes. There is nothing wrong, its just doing its thing and that is working. I had a truck with a Detroit and it also had a four speed tranny. With a 4 spd, the BANGING is worse, also normal according to TracTech. They say this is the engaging and disengaging of the gears inside. When you let off the gas, and then give gas, BANG. The locker has engaged. When you turn corners, etc. you will hear a ratcheting sound like your ratchet tools. This is also normal.
     
  3. windrider

    windrider Registered Member

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    Always make sure your rear tires are the same size. That can make the locker work more if one tire is bigger than the other.
    Is the locker new? or is it a new noise it is making. It take a little getting use to.
     
  4. BLzr4x4ngkid

    BLzr4x4ngkid 1/2 ton status

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    It's done it since I bought it. I figured out on my own that it was the locker. Now I got another question..........I jacked up my left side rear today and noticed that you can turn the wheel forward without resistance......it just turns. Is this normal?

    "Don't hit me with them negative waves so early in the morning." Odd Ball--Kelly's Hereos
     
  5. Executioner

    Executioner 1/2 ton status

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  6. HarryH3

    HarryH3 1 ton status Author

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    When you jack it up and spin one side (while the other side is held stationary) you should feel a good bit of resistance, then the locker will unlock and let the wheel spin. That's how a Detroit Locker "differentiates". If one wheel tries to go faster than the differential case, that side unlocks.

    You can find the directions for doing an operational test at <A target="_blank" HREF=http://www.tractech.com/tech_tips.htm>http://www.tractech.com/tech_tips.htm</A> That's right out of the owners manual. [​IMG]

    BTW, Detroit Lockers bang and clunk a lot. Occasionally you'll find yourself looking in the rearview mirror to see if you left any parts in the road behind you! [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  7. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    When one wheel is jacked up you will normally be able to rotate it in one direction, but not the other. When it is turning you should hear a clicking noise.

    Jim '80 GMC
    Freedom First!
    <A target="_blank" HREF=http://www.bigjbear.coloradok5.com>http://www.bigjbear.coloradok5.com</A>
     

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