A used 2800 I acquired must have had the same problem. The prior owner
put a cut off closed end wrench on this bolt, secured with another thru
screw thru the handle stub so there was no way for the bolt to loosen.
Also easy to take apart.
Grant KZ1W
On 7/7/2018 20:23 PM, 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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