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Pr-525-7 cmi

Discussion in 'Mills' started by Pave441, Mar 28, 2013.

  1. Pave441

    Pave441 New Member

    Joined:
    Mar 28, 2013
    Messages:
    2
    Location:
    Bryan Texas
    Have a question for you guys out there. We have a 525 that had a drum with weld on blocks which was taken off and had another drum installed. The drum which was installed has knock in holders that hold the teeth. We can not get the machine to cut a 2" mat now. I asked the shop if the drum was the same diamater and they said yes. There is just not enough torqe to cut the belt starts squilling. The dischage belt sets 6" off the ground when at 0" before we could get it close to the ground allowing us not to carry so much material as we were cutting.
    If the drums diamater is bigger and using the same pully from the existing would it not cause a problem?:confused:
     
  2. milling_drum

    milling_drum Senior Member

    Joined:
    Aug 19, 2008
    Messages:
    724
    Occupation:
    asphalt mill operator (ret)
    Location:
    out west lately
    Ok not to be goofy or anything I've never heard of a 525-7 without a front mouldboard/bulkhead that is easy to raise and lower with a handle along the frame not far from where the old style sensor wheel brackets were/are. If you are using the old style grade controls, you aren't set to zero properly which is typical after a trip to the shop.

    You are welcome to post a picture or email me one and il give you as much as I know what to do, it looks like they arent the type of company who care much for a mill as a specialty item and you will see plenty of this with an old SOB like that. Don't get me wrong, CMI are good machines but what your going through right now was something only known to mill contractors, now that mills aren't as exclusive as they once were...well...

    Please email me a picture of the Front of the drum housing, I'll give you some info on it, if you want I can walk you through the zero procedure but that would suck, ask your boss to fly me down there and il spend a few days with you milling and save you guys from getting your ass ripped weekly because of what can happen.

    That model CMI does not lift up real high, or looks like it dosen't. Make sure the ground man helps the operator when you get into situations where the ground isnt level. Many of that model get laid over on the side...

    Email solvent_x_farmer@outlook.com

    good luck
     
  3. Pave441

    Pave441 New Member

    Joined:
    Mar 28, 2013
    Messages:
    2
    Location:
    Bryan Texas
    Well, we found the problem with the drum not taking the load. The busings holding the drum drum housing had extensive wear on them causing the the belt not to hold the pressure once the drum hit the ground. The bushings were replaced along with the tensioner that goes on the housing making it stable. Tried it out today and its cutting right. We are going to modify the gauges on the front legs, to make it easier to know the depth that is being cut. The ones that run in the leg just do not slide up and down as they suppose to. Having to use the tape gets old.
     
  4. milling_drum

    milling_drum Senior Member

    Joined:
    Aug 19, 2008
    Messages:
    724
    Occupation:
    asphalt mill operator (ret)
    Location:
    out west lately
    Wow, I know those gauges your talking about, they have never been accurate on the ones Iv run. Make sure you zero out good and then see what happens cutting.