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Locking Differentials for Rear Ends

Discussion in 'Heavy Equipment' started by Doakster, Dec 8, 2008.

  1. Doakster

    Doakster Senior Member
    from Maine
    Messages: 650

    For those that run dump trucks, I'd like to know who has a locking rear differential. I know larger dump trucks offer them, but I'd like to know if there are any options for the smaller International 4600 that I just bought.

    Not sure what it has for a rear diff. Probably in the range of a 1.5-2ton axle, maybe more.
     
  2. Jay brown

    Jay brown PlowSite.com Addict
    Messages: 1,783

    your rear should have a tag on it.....all you need to do is put a limited slip gear in it....i'd like one for my salt truck, but it doesn't look like it's worth the trouble..just gotta keep the tanks full of chemicals so when the salt is gone i have weight.....i noticed you said your truck was getting stuck on the frost....doesn't look like the wood that you haul is a big enough load to get traction....could you just use your pickup for the wood or get chains?
     
  3. BIGBEN2004

    BIGBEN2004 Member
    Messages: 86

    A set of chains would be easier and cheaper and probably will do a better job. Just my .02 cents.
     
  4. Doakster

    Doakster Senior Member
    from Maine
    Messages: 650

    The reason why I want to use the dump is because I mainly got it to haul more wood per load. So using my pick up wouldn't be very economical, you can really only fit about 1/3 of a cord in a pick up were as the truck will easily hold 2 cords, it's a no brainier when you look at the transport cost. I probably had at least 6000-7000lbs of wood in the back when I got stuck, It just spun the tires very easily on the frozen ground, I was going slightly up hill as well, that didn't help.

    I want to stay away from chains because if I deliver wood to someone I don't want to cut up their lawn or what have you with the chains. I'd rather just be able to lock in the differential and drive out of a sticky situation. I may have to start carrying chains with me though just in case.

    Do you know of any one who sells limited slips for these trucks?

    Like I said I'd rather stay away from chains because of what I mentioned above, but I agree I probably wouldn't get stuck much with them.
     
  5. MAR4CARS

    MAR4CARS Senior Member
    Messages: 246

    Contact or look up on the web Randy's ring and pinion .. there you can get an idea or some info on what your looking for .. if they make applications for your truck then you can choose between a limited slip or a locking type rear either air activated or electrically activated.
     
  6. Jay brown

    Jay brown PlowSite.com Addict
    Messages: 1,783

    do you have to load all that wood up in that truck by hand?:dizzy:
     
  7. Doakster

    Doakster Senior Member
    from Maine
    Messages: 650

    Right now we do....but a conveyor might be in the works in the future.
     
  8. Jay brown

    Jay brown PlowSite.com Addict
    Messages: 1,783

    you must be young...lol 7000lbs into the back of a 6' high dump truck is a lot of work!! could you use a low boy trailer and a 4x4 pickup?
     
  9. Doakster

    Doakster Senior Member
    from Maine
    Messages: 650

    I'm 26, there's me and my dad doing the pitching/loading, we're usually sore by the end of the day but not too bad. I'll spring for a conveyor long before I load 10 plus cords.

    I don't have a dump trailer right now but that's on the wish list. Maybe a 10'-12' long one, I could probably fit 3-4 cords in that. It was a toss up for me to get a dump truck and deliver that way or a dump trailer and my pickup, the problem with that is you still have to unload the pick-up by hand.

    You can see I picked the dump truck option for now, so until I get the point that I need to be delivering more than 2 cords at a time, it probably isn't cost effective to get a dump trailer at this point. I'm sure I'll have one at some point though, we could definitely use it for other projects too.

    And then of course I could actually load my dump truck, and hook my 24ft gooseneck up to it, I'd have to build sides for the gooseneck but I plan on doing that anyway. Now you're looking at 6 plus cords at a time, but at least 4 of those would have to be unloaded by hand. For the trouble I'll just make 3 trips with the dump. Plus I don't know of anyone that orders 6 cords of wood, that's a lot of wood to burn in a year and usually those people have their own supplies.
     
  10. Doakster

    Doakster Senior Member
    from Maine
    Messages: 650

    Looks like they don't directly offer anything for heavy trucks but who knows they might be able to make something.
     
  11. Kybol

    Kybol Senior Member
    from Alberta
    Messages: 116

    How about some automatic chains? Look pretty slick.
    http://www.onspot.com/
     
  12. carl b

    carl b PlowSite.com Addict
    from Ohio
    Messages: 1,330

    Summit racing sells them not sure for every app tho .
     
  13. shovelracer

    shovelracer Senior Member
    Messages: 525

    You need to get under there and find the axle code. It is most likely made by Dana. Your code will be something like J175S. Then call or got to RoadRanger dot Com

    Code is read like this:

    J - 175 - S
    Series-Weight-Gearing
     
  14. Doakster

    Doakster Senior Member
    from Maine
    Messages: 650

    I actually think that I've seen vehicles with this system in service. Seems like it would work, but with a price tag of around $1895 for a vehicles with out air brakes which applies to mine seems a little steep. But then again I bet a locking or limited slip would case just about that or more for a vehicle this size.

    I think I'm going to have to check my axle tag and report back.
     
  15. Doakster

    Doakster Senior Member
    from Maine
    Messages: 650

    I called my Local International dealer today. Looks like they offer a Detroit No-Spin for my truck.

    This systems keeps the wheels locked at all times except when going around a turn or anytime the wheel speeds need to be different, then it unlocks the differential.

    It costs about $1000 for all the parts when all is said and done plus labor, so I figure at least $1500, probably closer to $2000.
     
  16. snow7899

    snow7899 Senior Member
    Messages: 238

    For the price difference, I would vote for the on spot tire chains. I think they will be a little more versatile to you.
     
  17. gene gls

    gene gls PlowSite.com Veteran
    Messages: 481

    I have a locker in my truck.
     
  18. Doakster

    Doakster Senior Member
    from Maine
    Messages: 650

    And.....how's it work?
     
  19. gene gls

    gene gls PlowSite.com Veteran
    Messages: 481

    Works fine. You have to be carefull about spining the tires because the back will slide sideways and hang you up. It makes a straining noise when turning a corner with a load . The back tires wear out sooner due to little slippage in the gears. Mine is a factory locker from Mitsi when I bought the truck new, 110,000 miles no problems yet.
     
  20. Doakster

    Doakster Senior Member
    from Maine
    Messages: 650

    What you described is pretty much exactly what I've read about them and the way they act. The clunking sound around a corner should be the diff unlocking.

    Do you know if it's a detroit No-Spin? That seems to be the most common one in heavy trucks.

    When you described the spinning I assume you were talking about snow, how does it handle on mud or slick/ice conditions.