[R-390] Cleaning R-390 gears in place before lube

[Bob Camp]

Hi

If you just slosh cleaner around the gears the dirt just moves around in the radio. It’s much better to pull the gears and clean them properly. This goes double for the split / anti-backlash gears. 99.9% of what is on there is coming off and not going back on again. Lubricating these things is very much a “less is more” sort of thing. There are very small surfaces involved and they don’t move very fast / very often / very heavy loaded. 

Bob
KB8TQ

On Jul 29, 2014, at 7:16 PM, Frank Hughes <fsh396ss at gmail.com> wrote:

> Hi,
> Great discussion on the lubricant issue!
> Before I can lubricate, I have to clean the ancient crud off.
> I am lazy, want to try to just spray Trichloroethylene straight down the
> gear train and see what
> it removes.
> Possibly also use compressed air to remove the larger chunks.
> Is this a bad idea, as a preliminary attempt?
> 
> UGLY GEARS:
> http://i180.photobucket.com/albums/x257/fish1_07/R-390/r390_gears2_zps451cb34e.jpg
> http://i180.photobucket.com/albums/x257/fish1_07/R-390/R390_gears1_zpsf677a220.jpg
> 
> 73
> Frank
> KJ4OLL
> ______________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:R-390 at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html