Wow.... with that much potential repair cost, I would replace that bolt
with a cross-drilled bolt-head and safety wire it.
______________________
Clay Autery, KY5G
(318) 518-1389
On 07-Jul-18 22:23, Les Kalmus wrote:
I experienced this. The cause was the small 1/4" SS bolt into the top
of the output shaft had come loose which allowed the shaft to drop.
This caused a lot of play between the splines inside the base tube of
the mast plate and the splines on the output shaft. I had to replace
the shaft. Ultimately, I had to replace the mast plate too. If things
aren't worn too much you could probably tighten that bolt without
replacing anything. I used Loctite on it to make sure and never had
the problem again.
Les W2LK
On 7/7/2018 5:14 PM, Dick Allardyce (N4RA) via TowerTalk wrote:
While working on my tower yesterday I discovered a problem with my M2
Orion 2800PX rotator. I noticed a lot or rotational freeplay.
Probably about 20 degrees. In addition, the output shaft wobbles
about its axis by about the same amount (10-20 degrees). I didn't
know I had this problem so I was under the impression that the unit
was working properly. I suppose the mast was holding the pieces
together.
My question: Has anyone had a similar problem and what might be
involved to fix it? Specifically, is this a DIY repair or will the
whole unit have to go back to M2 for repair. The Operating
Instructions has a drawing of the interior that leads me to believe
the internal thrust bearing might be compromised. That could
account for the wobble, but I don't know about the rotational freeplay.
Any theories or suggestions?
Thanks
Dick
N4RA
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