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18447RE: [RoboMower] Re: Robo mower makes erratic moves

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  • Charles Grenkow
    Mar 5, 2013
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      Where in BC are you located? There was a certified RoboMower tech in Victoria 3 years ago - don't know if he is still in business since FR was very slow in paying him for his work.

      Chuck




      To: RoboMower@yahoogroups.com
      From: catimann@...
      Date: Tue, 5 Mar 2013 06:26:47 +0000
      Subject: [RoboMower] Re: Robo mower makes erratic moves





      Hmmm then I think I know why mine is this way now. It got stuck several times over the summer and for long periods as I was busy.

      --- In RoboMower@yahoogroups.com, "rann_georgia" wrote:
      >
      > I have to agree. I'm going through the same problem. Mine got stuck on a tree root that was coming up.
      >
      > It appears that the replacement pinons are made of a tougher nylon(?) or composite material.
      >
      > If it's the pinon, one wheel will slip quite easily and the other one will have some traction.
      >
      > I believe that wiki has instructions on taking it apart. Probotics is the dealer in the U.S. They may also serve Canada.
      >
      > With shipping, the pinons came to around $43 dollars. He said to take plenty of pictures before you take anything apart.
      >
      > The pinon is on a brass sleeve which he said could be cut with a hack saw. I would guess that a dremel would work as well, just don't cut into the motor shaft.
      >
      > I do believe that the drive train has to be taken apart to get to the motor which has to come off. Likely a bottle of lock tight when putting it all back together would save a headache or two with the motors coming loose.
      >
      > These pinons should both be replaced at the same time and a machine shop is recommended to do that as a great deal of pressure is required to put them on.
      >
      > I asked if this was something expensive. He said one guy called him on this and said a machine shop guy, he'd just put it on for nothing. But, $20 dollars should be about the cost of having this done.
      >
      > As far as the motor issue, I haven't had to deal with that yet.
      >
      > Good luck.
      >
      > --- In RoboMower@yahoogroups.com, Danny Miller wrote:
      > >
      > > That's the drive train failing. It is not an uncommon problem.
      > >
      > > Well, one of two things actually. Often the motor heats up enough to
      > > sag in the mount, and its pinion- the little gear on the motor shaft-
      > > doesn't mesh well, skips, and they both grind down. Or, any or all of
      > > the gears wear, primarily the old style where there's no bearings on the
      > > centers, just bushings. The bushings compressed down over time, became
      > > slack, and the gears rocked around and became loose, thus meshing badly
      > > and grinding.
      > >
      > > If it's the motor mount alone, you need a new gear FRAME, if it's more,
      > > then you'd do better to replace the drive train as a set, esp if you
      > > have the old style with bushings.
      > >
      > > Danny
      > >
      > > On 3/2/2013 7:32 PM, catimann wrote:
      > > > Perhaps erratic is wrong. it looks like one wheel is getting stuck.
      > > >
      > > > Anyone else have a similar problem?
      > > >
      > > > Also anyone in the BC Canada area service these?
      > > >
      > > >
      > > >
      > > > ------------------------------------
      > > >
      > > > Yahoo! Groups Links
      > > >
      > > >
      > > >
      > > >
      > >
      >






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