[TowerTalk] US Tower gearbox

[Bob K6UJ]

Synthetic lubes are becoming the norm now.  Hub City has synthetic lubes 
as standard now in their worm
gearboxes.   They do recommend flushing the old non synthetic lube from 
our worm gear boxes
before switching to synthetic.  I have had no problems at all with 
leakage from my worm gear box
since switching to synthetic.  It is more expensive but I don't plan on 
changing it very often :-)

Bob
K6UJ


On 9/5/16 2:33 PM, Mike Fahmie via TowerTalk wrote:
> Some of the articles that I read said sludge can prevent aged gaskets from leaking.  When synthetics are used, they tend to dissolve the sludge and leaks then occur.  Also, early synthetics were not friendly to some gasket materials, allegedly, with newer formulations, that is no longer a problem
>
> -Mike-
>
>   
>        From: Kent Olsen <kilo6dko at gmail.com>
>   To: Mike Fahmie <wa6zty at yahoo.com>
>   Sent: Monday, September 5, 2016 2:20 PM
>   Subject: Re: [TowerTalk] US Tower gearbox
>     
> This may not be relevant but I switched from dino oil to synthetic in my Jeep motor. It was told it was not necessary to flush. The new synthetic oil seeped out of all the gasket in the motor. Just FYI 73
> Kent
> NC6B
> On Sep 5, 2016 12:49 PM, "Mike Fahmie via TowerTalk" <towertalk at contesting.com> wrote:
>
> I did some Goggling on the subject of flushing before switching to synthetic oil and, at least in the case of automotive engine oil, all of the references I found said that it wasn't necessary.  They say that synthetic oils are already a mix of mineral and synthetic. Synthetics do tend to loosen debris so perhaps it might be wise to run awhile with the first batch of synthetic then drain and refill if your system has been in service long enough to be dirty.
> I found this on Mobil's website;
>
> While Mobil SHC 600 Series are generally compatible with mineral oil based products, a mixture may detract from their performance. Consequently it is recommended that before changing a system to one of Mobil SHC 600 Series products, it should be thoroughly cleaned out and flushed to achieve the maximum performance benefits.-Mike-
>
>
>        From: Bob K6UJ <k6uj at pacbell.net>
>   To: towertalk at contesting.com
>   Sent: Monday, September 5, 2016 11:55 AM
>   Subject: Re: [TowerTalk] US Tower gearbox
>
> John,
>
> I don't know the capacity of your TX455 gearbox but it would not be over
> one quart.
> My HDX589 gearbox takes exactly one quart.
> As you probably already know it is important to flush the old gear lube
> out with
> the synthetic lube you are going to use.  The original lube and the
> synthetic are
> not compatible.  I would order two quarts.  That should work fine for
> flush and fill.
> Here's a supplier that I have used.
> https://www.zoro.com/mobil- mobil-shc-630-circulating-iso- 220-1qt-120272/i/G0943074/
>
> Bob
> K6UJ
>
>
> On 9/5/16 10:27 AM, John Holmes wrote:
>> I was reading with interest the explanations of the lube needed for US
>> Towers. My TX455 has been up for five years now and, while I have lubed the
>> grease fittings regularly, I've never changed the oil. I want to do this now
>> using SHC630 as K6UJ noted. However, before I order this, how much would you
>> recommend I order? Would 2 quarts be enough to both flush the gear assemble
>> and refill it? I'd hate to have too little on hand after draining.
>> Thanks for your help.
>> 73,
>>
>> John W9ILY
>>
>>
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