[TowerTalk] MA-550 cables maintenance

[Ray Benny]

Jorge,

I became owner of a MA770 that had not been raise or lowered in perhaps 10
years. I found most of the cable pulley roller bearings frozen. I removed
all the bearings and soaked them an ultra-sound bath device using kerosene.
Most of the bearing cleaned up well and were reused, but several had to be
replaced. I think the bearings are Fifnir K8 bearings and are difficult to
find.

Make sure the lifting cables are not damaged or rusted. If so, they need to
be replaced. And check the up/down limit switches. The ones on my MA770
were totally frozen and had to be replaced.

GL,

Ray.
N6VR


On Thu, Jan 30, 2014 at 11:31 AM, Jorge Diez - CX6VM
<cx6vm.jorge at gmail.com>wrote:

> Hello
>
>
>
> I got a used MA-550 tower, first owner bought it in 2007.
>
>
>
> the cables to rise up and down and to lay it are very dry and a bit oxidize
> in some places, also the pulleys.
>
>
>
> May I put a mechanical oil or fat on it or is not necessary?
>
>
>
> Any other important thing to check on this tower?
>
>
>
> Thanks,
>
> Jorge
>
> CX6VM/CW5W
>
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