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Suggestions For Loosening Frozen Machine Screws?
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| 12 March 2017
| Windy
Posted on 03/12/2017 9:53:29 PM PDT by Windflier
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The screw heads are bugle shaped, and sit flush to the surface of the aluminum block, if that helps.
Thanks in advance.
1
posted on
03/12/2017 9:53:30 PM PDT
by
Windflier
To: Windflier
2
posted on
03/12/2017 9:54:11 PM PDT
by
FreedomStar3028
(Somebody has to step forward and do what is right because it is right, otherwise no one will follow.)
To: Windflier
You probably already did it, but I finally learned to tighten first and then loosen.
3
posted on
03/12/2017 9:56:21 PM PDT
by
skr
(May God confound the enemy)
To: Windflier
Kroil. It is a penetrant but superior to all others. Not cheap but it works where others don’t.
4
posted on
03/12/2017 9:57:03 PM PDT
by
bigbob
(People say believe half of what you see son and none of what you hear - M. Gaye)
To: Windflier
Torque them in the tightening direction momentarily then reverse torque with “impulse”. Repeat a few times as necessary.
5
posted on
03/12/2017 9:58:00 PM PDT
by
pfflier
To: bigbob
I, too, use Kroil. Nothing like it.
6
posted on
03/12/2017 9:58:09 PM PDT
by
Joe Bfstplk
(A Irredeemable Deplorable Texan)
To: Windflier
Repeated thermal cycling. Impact extractors. Make sure not a lefthanded thread.
7
posted on
03/12/2017 10:00:16 PM PDT
by
Paladin2
(No spellcheck. It's too much work to undo the auto wrong word substitution on mobile devices.)
To: skr
Try Kroil expesive and hard to find or Marvel Mystery Oil
8
posted on
03/12/2017 10:00:28 PM PDT
by
pcpa
To: pfflier; skr
Torque them in the tightening direction momentarily then reverse torque with impulse. Repeat a few times as necessary. Thanks, guys. I'll give that a try.
9
posted on
03/12/2017 10:00:45 PM PDT
by
Windflier
(Pitchforks and torches ripen on the vine. Left too long, they become black rifles.)
To: Windflier
A blast from a propane torch or heat gun? The aluminum of the part should expand a bit faster than the steel of the screw, no? You might have to heat while exerting torque on the screws. If you don’t want top apply heat or think it might do damage, then get a block of scrap aluminum (or brass) and clamp it to your piece with no gap, you may be able to whack it with a medium hammer while applying torque to the screw but hitting the block, you won’t gall up the surface of your machine.
To: Windflier
To: FreedomStar3028
Drill and replace. Thanks, but it would be easier for me to replace the whole assembly. I might do that, if I can't get the Allen screws out.
12
posted on
03/12/2017 10:04:16 PM PDT
by
Windflier
(Pitchforks and torches ripen on the vine. Left too long, they become black rifles.)
To: Windflier
PB blaster or ATF and acetone.
soak and tap on them for a good while, leave over night.
Aluminium is soft and galls easily jaming them, worse than
stainless steel. When you put them in use a good anti-seize
and you won’t have this problem.
13
posted on
03/12/2017 10:04:29 PM PDT
by
tet68
( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
To: Windflier
A dremel and a nut cracker is all you need. Cut the nuts close to the threads and then snap them off. Takes some time but easy peasy. You could drill them. You could try PB Blaster overnight soaked and I mean soaked wrapped in shop rags. Sounds like you have bimetal corrosion.
To: Windflier
Nuke it from Orbit...it’s the only way to be sure.
15
posted on
03/12/2017 10:05:00 PM PDT
by
dfwgator
To: Windflier
Try a little heat. They could be secured by loctite, or seized, either way some heat could break them loose.
16
posted on
03/12/2017 10:05:32 PM PDT
by
PeaceBeWithYou
(De Oppresso Liber! (50 million and counting in Afghanistan and Iraq))
To: bigbob
Kroil. Would I find that in a hardware store, or an automotive store? Much appreciated.
17
posted on
03/12/2017 10:06:01 PM PDT
by
Windflier
(Pitchforks and torches ripen on the vine. Left too long, they become black rifles.)
To: Windflier
18
posted on
03/12/2017 10:06:10 PM PDT
by
Morgana
( Always a bit of truth in dark humor.)
To: Paladin2
Repeated thermal cycling. Impact extractors. Make sure not a lefthanded thread.Correct on all three counts. You might also hit them by putting something into the allen wrench socket and hitting the end of them to break them loose (don't hit too hard) which is called "warming them up". The impact extractors would also do that for you. Also, think about the concept of reverse thread. Best wishes.
19
posted on
03/12/2017 10:06:21 PM PDT
by
MeneMeneTekelUpharsin
(Freedom is the freedom to discipline yourself so others don't have to do it for you.)
To: Windflier
20
posted on
03/12/2017 10:07:14 PM PDT
by
BigEdLB
(To Dimwitocrats: We won. You lost. Get used to it.)
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