How do you shear a bolt while removing it?
How do you shear a bolt while removing it?
One of the first major repairs on my eBay special GS550LX was to replace the cam cover gasket. My tach cable came right off with a pair of pliers to do the rotating and my fingers to pull it straight out.
While removing the cam cover gasket bolts, one of the shorter length bolts just snapped right off when I started to untighten it. WTF? Now, I could understand how that could happen if the threads themselves were seized, but once the cover was off, the stub came off with just finger unscrewing.
The gasket was basicly completely gone around the front portion that goes around the cam chain. Everywhere else, I had to sit out with my 4" Winchester straight knife at as shallow an angle as I could manage essentially whittling the remains of the old gasket off of the cam cover seat for about two hours.
Finally managed to get a clean seat without a lot of gasket shavings making their way into the cam ways, on both halves of the cam gasket seal, seated the new old stock gasket and torqued the remaining bolts from the inside out in a criss-cross pattern. Started the engine and let it idle. No problem.
Then NeroBro told me I should have used some ordinary grease on the gasket to make it easier to remove next time, so next day, I bought a tub of grease, removed the cam cover again, greased up both sides of the gasket, and reinstalled-- only to have the cam cover crack around one of the bolts.
http://mama.indstate.edu/users/garrett/projects/Suzuki/photos/cam_cover_crack_1.jpg
http://mama.indstate.edu/users/garrett/projects/Suzuki/photos/cam_cover_crack_2.jpg
Now, there's a slight oil leak through the crack, so looks like before I will be able to declare it roadworthy, I'll have to take the cam cover off yet again to administer a proper JB weld application.
Although, since filling it with fresh 10w40, there's been a number of additional small oil leaks to show up, one in the head gasket, virtually every half moon plug around the cams. I've been reading about the possibility of going to 20w50, that it might stop a lot of the small oil leaks, and maybe even the crack in the cam cover.
Whatayathink?
Now, where's my whetstone. My knife needs honing. And where could I get
just one standard length cam cover gasket bolt for my 81 GS550L? And while I'm at it, there's lots of other little screws, nuts, bolts, and washers I could do with replacing with fresh hardware.
Oh! And when I got the cam cover off, I discovered the the PO had fumbled one of the head's acorn nuts down into the valley and just left it there, so I placed it on properly and torqued it to spec. Could that have been what started the head gasket leak?