First, coat it with engine oil and let it stand for a few hours; then coat it again and tap the end with a small hammer and a punch; and since it is already rounded, get some high quality vise-grips and clamp down tightly on it and work it back and forth until you can turn it out entirely. NOTE: clamp the vise-grips perpendicular to the axis of the bolt, like, from the side, not head-on, unless you have no choice.
I recommend engine oil because it has better lubricity and penetrates well, just not as fast as penetrating oil. You can use PB Blaster, it works very well, but engine oil is more viscous and therefore will provide more lube. You can do a combination of both, but I would go with the engine oil first, and then add the PB. I used this method on VW exhaust stud nuts and the only time I lost one after the old-timer told me the method was when the stud was rusted to about half its diameter, so to speak, and was coming out anyway. Asian metrics maintain the fine thread, even on larger diameter bolts, which you may have noticed, makes them extremely difficult to remove, even if the correct torque was applied initially. Germans use a more coarse pitch, which makes them easier to remove. And considering that VW's exhaust studs only require 7 ft-lb of torque on an 8mm stud, and it doesn't come loose and fall off, all that retention of the fine thread on large bolts is unneccesary and frustrating at disassembly time. ________________________________ From: Graham Rogers <[email protected]> To: [email protected] Sent: Mon, March 21, 2011 1:45:32 PM Subject: Re: [Nighthawk Lovers] Worn out bolt what's your bike? On Mar 21, 2011, at 11:47 AM, Stefano Ascari wrote: Hi All, >I'm trying to replace the battery with a new one and the latch that opens the >drawer has a worn out bolt ( I figure previous owner didn't use a metric >ratchet). It still has a little grip, but it's really tight! What can I do to >take it out without permanently scarring and perhaps loosing it? Is there some >magic trick like heating it up? > > >Thanks! > >-- > >Web Design solutions:http://www.stefanoascari.com/ > > >-- >You received this message because you are subscribed to the Google Groups >"Nighthawk Motorcycle Lovers!" group. >To post to this group, send email to [email protected]. >To unsubscribe from this group, send email to >[email protected]. >For more options, visit this group at >http://groups.google.com/group/nighthawk_lovers?hl=en. > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
