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ETX125 gear chatter

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#1 Mike Murphy

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Posted 03 June 2020 - 09:13 PM

ETX 125 vintage 2000 used in alt/az mode exhibits a periodic chatter. The chatter is not very loud but there is a noticeable vibration evident in the image for instance of the moon. I am guessing the chatter originates in the azimuth axis. Recently I cleaned the plastic gearset in the base of the green grease that was gobbed in there. Any ideas?  



#2 Geo.

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Posted 26 June 2020 - 11:37 AM

Check the mesh of the crown and worm gears.




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