1. Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!
  2. ALL NEW MEMBERS READ THIS FIRST!! Thank you for joining Heavy Equipment Forums! If you are new to forums we communicate with "Threads", please search our threads to see if your topic may have already been answered and if not then click "Post New Thread" in the appropriate forum. This will allow all of our members to see your question and give you the best chance to be answered. After you've made a number of posts you will graduate to Full Member status where you'll see a few more privileges. Following these guidelines will help make this the best resource for heavy equipment on the net. Thanks for joining us and I hope you enjoy your stay!!

Shaky steering cylinders

Discussion in 'Pavers' started by Jackie j, Dec 13, 2018.

  1. Jackie j

    Jackie j Active Member

    Joined:
    Oct 27, 2015
    Messages:
    40
    Location:
    Us
    We have an ap1000f, serial ac400179 that the steering cylinder shakes back and forth with no input from the steering wheel?? Steering sensor is calibrated and reading correctly, and there are no fault or event codes. Several of our f model pavers do this, but this one is quite violent and is causing problems with the quality of the mat. Our cat dealer is looking into a svc bulletin for a pin in the column but not sure if that will help. Had anyone else had this issue??
     
  2. Cmark

    Cmark Senior Member

    Joined:
    Jan 2, 2009
    Messages:
    2,261
    Location:
    Australia
    I'm not familiar with this particular machine, but I see it has an electric over hydraulic system. I suppose as a first step I would try unplugging the electrical connections from the steering solenoid valve to see if the problem is in the electrical system or in the hydraulic system.
     
    Vetech63 likes this.
  3. Jackie j

    Jackie j Active Member

    Joined:
    Oct 27, 2015
    Messages:
    40
    Location:
    Us
    We unplugged the coils on the valve and it stopped, replaced both coils and it still had same problem. Turns out the solenoid valve was faulty. It was "fluttering" and causing the cylinder to shake. Replaced them on every paver that shook and fixed every one of them. Now we have a feedback motor failed in another f model...........