My experience has led me to use either PB-Blaster, or Mouse Milk. Apply
liberally and let set overnight.
On larger screws/bolts, I use a cutter wheel to slot them and use a
"Hammer operated" impact screw driver.
The "hammer" used in this case is a 5# Engineers hammer.
73
Roger (K8RI)
On 7/2/2010 10:54 AM, Mark Robinson wrote:
> I have read that the best stuff for soaking rusted parts in is acetone and
> ATF transmission fluid. Google it. You might want to give it a try if all
> else fails.
>
> http://www.zrxoa.org/forums/showthread.php?t=207734
>
>
> Mark N1UK
>
>
> ----- Original Message -----
> From: "Grant Saviers"<grants2@pacbell.net>
> To: "Jim Thomson"<jim.thom@telus.net>
> Cc:<towertalk@contesting.com>
> Sent: Friday, 02 July, 2010 10:24 AM
> Subject: Re: [TowerTalk] Rohn TB-4 bearings, sheared off transverse bolts !!
>
>
>
>> Put the part with the sheared bolts into the oven at 450 F for an
>> hour. Aluminum's coefficient of expansion is much more than steel so
>> that should break them loose. Drill for the screw extractors first and
>> make sure they fit tightly. With oven gloves you might try with the
>> part still hot or wait for it to cool, put on some real Screw Loose etc.
>> and give it a go. Drilling on center and straight is the hard part.
>>
>> Good hardware stores, Sears, tool suppliers have sets of screw
>> removers. Sears also sells a remover set for nuts that have been
>> buggered. Using an impact wrench, they worked on my dozer when the nut
>> was a rusted rounded blob but wear out after a few tough nuts. They are
>> safer than burning off the nut and bolt when big heat is a no-no.
>>
>> Grant KZ1W
>>
>>
>> Jim Thomson wrote:
>>
>>> OK... the 3 x 3/8" G-5 bolts [ that appear to be cold galvanized] on
>>> BOTH my Rohn TB-4 bearings
>>> are rusted really badly. I soaked all 6 of em with WD-40.. from both
>>> sides. I got 4 of em out with no problems
>>> and of course 2 x of em sheared right off flush to the aprx 3/4" thick AL
>>> collar! [ one sheared on each bearing]
>>>
>>>
>>>
>>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|