Electronics > Beginners

Cleaning a DC motor without disassembling

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mikerj:
Back in my youth when I was into RC cars the way to run-in new 540 motors and clean used ones was to run them under water (from a battery pack).  The amount of crud that gets flushed out of the vents is amazing, though obviously the motor must thoroughly dried and bearings re-lubricated afterwards.

Jwillis:
Silicone  greases can support temperatures from -150° F to 600° F ., contain no harmful or flammable petrochemicals and some  also be have  Teflon  (Polytetrafluoroethylene (PTFE)) added. The problem with Teflon lubricants are the carriers and Teflon is not the primary lubricant . Tri-flow primary lubricant is Naphthenic Petroleum Oil and the  Teflon accounts for around 1% by volume.
Also consider that most heat sink compounds are Silicone grease based.
Regardless of what you use keep all  lubricants out of the commutator.

mcovington:
Spindle oil was mentioned.  What do people think of Marvel Mystery Oil as a very light, penetrating lubricant?

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