[amsat-bb] Yaesu g5400B longevity in stroage

[Eric Garner]

Thanks, to all those that responded.

The consensus seems to be that I should pull it apart, clean and re-grease
the whole thing.

-Eric KI7LTT

On Wed, Jul 4, 2018 at 12:53 AM, Paul <paul at ukdx.org.uk> wrote:

> Eric, having just brought a 5400 elevation rotator back into service I
> would say you should do the following.
>
> Open it up, add anti seize compound to all the nuts and screws.
> Replace both sets of ball bearings with stainless steel ones. I was
> advised they are 5/16" not 8MM and have had no issues with imperial sized
> ones, I chose to leave the bearing retainers in place.
> Regrease everything and wipe all the cog surfaces with grease, the one on
> my position pot was badly corroded.
> Junk the eight cross head bolts that hold the casing together and replace
> with stainless socket head bolts.
> Use a liquid gasket when you stick the two halves back together and
> consider enlarging the drain hole in the case.
> This may seem a lot of work for something that is effectively new but it
> will save a lot more grief in the long run.
>
> The azimuth rotators seem to fare a little better but again I would
> replace any external bolts with stainless, ditto the bearings and
> regrease/anti seize everything else.
>
> It's a convenient time to say thanks to everyone who offered advice and
> tips when I renovated mine. As I took some photos through the process I
> decided to put them together in a small web page, hope it's OK to post it.
> http://www.ukdx.org.uk/tv/rotator.htm
>
> 73
> Paul
>
>
> On 03/07/2018 23:31, Eric Garner wrote:
>
>> I acquired a G5400 az/el rotator that looks to be in pristine condition,
>> apart from some rubber rot. I don't think it's ever been mounted outside
>> in
>> the weather. Since this has been in storage for probably at least 20
>> years,
>> what should be done with it to put it into service? does it need to be
>> pulled apart and re-greased? can I just replace the rotted rubber parts
>> and
>> call it good?
>>
>>
>> pictures here:
>>
>> http://www.pushingbubbles.com/radio-stuff/new-rotator/
>>
>>
>> thanks
>>
>> -Eric KI7LTT
>>
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-- 
--Eric
_________________________________________
Eric Garner