[TowerTalk] Zerk fitting for MA-40

[Patrick Greenlee]

An extensive university (I forget which one) engineering department 
study tested penetrating oil products like Rust Buster, WD-40, etc. 
None, including the expensive ones beat a 50-50 mix of ATF and Acetone.

I mixed up some and have been getting good results.  I recommend you try 
this mix before you give up on Easy-Outs and their ilk.  Left handed 
drill bits work in some instances but be careful with the smaller sizes 
as when they break off they are in the way of trying other approaches.

Good luck to you.

Patrick   NJ5G

On 4/10/2015 1:14 PM, Gary Schafer wrote:
> There are some fittings that just have small rings around them. They look
> like a thread but are parallel rings. They are made to be driven into a
> smooth hole with no threads.
> If you are turning the wrench and it does not unscrew, this may be what you
> have.
>
> If you have to drill to get the old one out try a left hand drill bit. Often
> the left hand rotation of the drill bit loosens the thread and unscrews it.
> I have never had much luck with EZ-outs if the threads are rusted.
>
> 73
> Gary  K4FMX
>
>> -----Original Message-----
>> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
>> Don W7WLL
>> Sent: Friday, April 10, 2015 12:57 PM
>> To: Towertalk
>> Subject: Re: [TowerTalk] Zerk fitting for MA-40
>>
>> IMHO, use an EZ-out, inexpensive and work. I've never seen a Zerk that
>> was
>> not tapped but surely could exist. Mine are tapped. Even if you have to
>> end
>> up drilling it out you can rethread. Just keep the drill size of the EZ-
>> Out
>> doesn't work less that the tap size specified for the Zerk thread. Be
>> sure
>> to THROUGHLY flush out the fitting hole, don't want any chips or crud
>> getting into the bearing. You can't put to much grease in, you should
>> see it
>> oozing out before stopping the greasing.
>>
>> Don W7WLL
>>
>> -----Original Message-----
>> From: Kurt Cathcart. KR2C
>> Sent: Friday, April 10, 2015 9:26 AM
>> To: towertalk at contesting.com
>> Subject: Re: [TowerTalk] Zerk fitting for MA-40
>>
>> Good information everybody.  And quick too!  Thank you.
>>
>> One more question.  Removing the remains of the Zeck fitting, would
>> anybody know if this is tapped or pressed?
>>
>> -Kurt
>> KR2C
>>
>>
>> On 4/10/2015 11:59 AM, Kurt Cathcart. KR2C wrote:
>>> I have a US Tower MA-40 with the rotator base.  The last time I
>> greased
>>> the bearing, the Zerk fitting broke when I was removing the grease
>> gun.
>>> Does anybody have an idea of what I should replace it with?  I got
>>> crickets from US Tower.
>>>
>>> -Kurt
>>> KR2C
>>>
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