Removing stuck fasteners
(→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 | + | 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 head studs. I then 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 careful application of heat cycles. | If you really want to get studs out you need to use shock (hammer hits) and or careful application of heat cycles. | ||
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