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Wacker RD11A stopped vibrating

Discussion in 'Rollers' started by Tags, Sep 1, 2018.

  1. Tags

    Tags Senior Member

    Joined:
    Feb 19, 2012
    Messages:
    527
    Location:
    Connecticut
    I have a Wacker RD11A that suddenly stopped vibrating yesterday, I got it used and really don't know how many hours are on it. I was rolling 3/4 road base with it, it made no weird noises, just stopped and sounded like the hydraulics for the vibratory motor were going into relief. The machine still drives fine. I have a bad feeling the the exciter that the vibratory motor drives that vibrates the drum has seized or the bearings have gone out. Am I on the right track? Any help would be appreciated
     
  2. tool_king

    tool_king Senior Member

    Joined:
    Mar 29, 2010
    Messages:
    1,181
    Occupation:
    road mechanic owner
    Location:
    new jersey
    If you lost electrical power from joystick button or relay come loose it will stop . I will look at the manual in a bit . What is your email address so I can send you the manuals to have for future referance.
     
  3. Tags

    Tags Senior Member

    Joined:
    Feb 19, 2012
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    527
    Location:
    Connecticut
    Thanks for chiming in tool_king, it still has electrical power to the switch and actually engages the hydraulics but it "sounds" like the hydraulics for the exciter motor go into relief. I was looking at the repair manual online and it "looks" like there may be a chance the coupler form the exciter motor to the exciter may have the potential to strip out, or the bearings seized on the exciter itself. It made no funny noises when it stopped working. The steering and the drive still work fine and I believe the steering works off the exciter motors hydraulics....ill pm you my email address anyway, since you are the master of all manuals it seems.....;)
     
  4. Tags

    Tags Senior Member

    Joined:
    Feb 19, 2012
    Messages:
    527
    Location:
    Connecticut
    Since nobody must ever work on Wacker RD11’s I hope this helps someone down the road. I Removed the exciter motor and found that the coupling that connects the exciter motor to the exciter was in many pieces, the exciter still turns freely as does the hydraulic motor, so I guess it just wore out since it’s only plastic. The funny thing is, the repair manual that tool king sent me makes no mention of the coupling at all, it just says if machine doesn’t vibrate, remove exciter motor, if exciter motor does not turn freely, replace, if exciter doesn’t turn freely, replace parts as needed....I did find and look in the machine over though that the hydraulic tank seems to smell like gasoline, which means, I’m sure somebody that “borrowed” the machine at some point must’ve dumped gas in the hydraulic tank instead of the gas tank on the side of the machine, so I bought a new hydraulic filter and will change that and the fluid while it’s in the garage. The manual calls for 10W30 AW hydraulic oil, I am having trouble locating that, anyone know if AW46 would work OK? I attached a pic of what’s left of the coupling...
    17B79552-5D72-44B0-BFD8-85ECA1B7D9C3.jpeg
     
    hosspuller likes this.
  5. hosspuller

    hosspuller Senior Member

    Joined:
    Aug 28, 2014
    Messages:
    613
    Location:
    North Carolina
    Gasoline in the hydraulic tank... That's a new one. :eek:
     
  6. heymccall

    heymccall Senior Member

    Joined:
    Feb 20, 2007
    Messages:
    689
    Location:
    Monroeville, Pa
    Got a 544GTC wheel loader with a ground level fuel filler, and a climb up behind the cab, with padlock, hydraulic tank filler. Coworker climbed up and "fueled" the hydraulic tank to full. Figure about 15 gallon. Even with a drain and refill of the hydraulics, I still had to reseal all the cylinders (but, they were 12 yr old, 16k hour cylinder seals.) Never touched the pumps for any reason, even now at 23k hours.
    Another coworker "fueled" the muffler on an 1845C. Let's just say that we didn't have mosquitos for a month.
    Favorite...Lowboy driver, 150 miles from home, running on fumes in his two 100+ gallon tanks, pulled in to a station, put 90 gallon in the driver's tank, went down the road, turned around and came back and put 80 gallon in the other tank (of 87 octane). Made it to station exit.
     
  7. Tags

    Tags Senior Member

    Joined:
    Feb 19, 2012
    Messages:
    527
    Location:
    Connecticut
    Ouch! That last one sounds expensive. Yeah, there's a fuel door on the side of this machine so it would make perfect sense to open the hood, remove the chrome hydraulic tank cap, and proceed to put gas in. I wish I had been there when it didn't start. I'll cut the filter open when I change it, I'm sure the life has been shortened on the hydraulic components but she rolls pretty good stil and there's no noticeable whine from the pumps...anyone know if AW46 would be ok. I imagine it would being that it's running on AWpumpgas/hydro oil....:D