Removing stuck fasteners

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(Miscellaneous tips)
(Penetrating and lubricating oils)
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Penetrating oil is an extremely low-viscosity oil that can penetrate into the area between threads on a fastener. A stuck fastener is often heated, sprayed with penetrating oil, and then tapped with a hammer.
 
Penetrating oil is an extremely low-viscosity oil that can penetrate into the area between threads on a fastener. A stuck fastener is often heated, sprayed with penetrating oil, and then tapped with a hammer.
  
Some comments on penetrating oils.  WD-40 is not a penetrating oil, it is a corrosion preventative.  There is problem with the idea that penetrating oils can penetrate rusted together parts.  I have done some testing.  For a whole week I put Kroil on a head studs.  I than pulled one stud from the head that felt like it wanted to come.  As I suspected, it was dry.  If the bolt is free enough for penetrating oil to seap through then it will come out without any oil.  
+
Some comments on penetrating oils.  WD-40 is not a penetrating oil, it is a corrosion preventative.  There is problem with the idea that penetrating oils can penetrate rusted together parts.  I have done some testing.  For a whole week I put Kroil on a head studs.  I than pulled one stud from the head that felt like it wanted to come.  As I suspected, it was dry.  If the bolt is free enough for penetrating oil to seep through then it will come out without any oil.  
  
If you really want to get studs out you need to use shock (hammer hits) and or carefull application of heat cycles.   
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If you really want to get studs out you need to use shock (hammer hits) and or careful application of heat cycles.   
  
 
Some penetrating oils that are recommended by hotrodders:
 
Some penetrating oils that are recommended by hotrodders:

Revision as of 18:14, 4 September 2007

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