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Celestron CG5 motor teardown

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If you were ever curious to see what is inside a Celestron CG5 motor, here's your chance

At the gear end are two screws, inside it the gear housing containing a planetary gear with lumpy black grease 

remove the spur gears reveals 2 more screws that attach the gear housing to the motor

You can't disconnect this because the spindle running through the motor  has a small gear at one end and is attached to the encoder at the other end

Moving around to the encoder end are two small philips screws however there is a small cap with a very small  screw (this removes with a tiny flat head screwdriver and fine pliers - give it a tug )

the motor casing is attached to the black plastic encoder case by two small metal lips on the motor case, just fold these back with a screwdriver and the encoder and motor should separate

You will then notice that the motor wires are screwed into the black plastic base of the encoder , i.e. you can't tug them out from outside

electrical contact is via two metal springy pieces of metal making contact with the motor spindle

Inside are 2 curved magnets with what appears to be 4 overlapping copper coils

There are no makers marks on any of the components (although I believe the encoder is a us digital e4)

Anyone for starting a new hypertune, grease and fettle the insides of your motors  :grin:



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