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Repairing a Stiff or Binding Dec Slow Motion Knob

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#1 StarWars


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Posted 04 October 2004 - 11:41 AM

Repairing a Stiff or Binding Dec Slow Motion Knob.


#2 mattyfatz



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Posted 19 June 2007 - 09:21 PM

I dont think this is applicable to the ETX 70. The knob has a 1" plastic thread, instead of the brass one in your photo.

#3 WhiteLight


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Posted 16 October 2008 - 06:45 AM

I have a siff/ Binding RA knob. Any ideas? It doesn't twist smoothly, but sticks, making panning quite jumpy.

Edit: Ah. Same guy has a page for this problem as well: Link:

#4 dengwer


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Posted 05 December 2010 - 05:32 PM

My wife's ETX 90RA had a sticky dec knob. Upon taking the arms apart I found that the two knobs were both just screwed on to the ends of the shaft. I just grabbed both knobs and unscrewed them slightly (took alot of force with pliers). They work smoothly now. The AZ knob also was jumpy. I took it apart and saw that one plastic disc rode inside another. All kinds of oil, grease, graphite was tried to no avail. I finally rubber cemented (in case I needed to undo it) 3 tiny slivers of easy gliders onto the bottom disc spaced equally around. It is smooth as silk now.


#5 Westseen


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Posted 03 November 2013 - 09:08 PM

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