Wilsons Sandbox

A word of warning. Lubricating threads is a procedure that must be approached carefully.  For instance some torque readings specify that NO lubrication be used for the reason that the factory determined the torque necessary to provide a pressure on a gasket with clean bare metal threads.  If you were to apply the same torque level with lubricated threads the actual pressure on the gasket would be greater (as would the shearing aka stripping load on the threads.  Not good)  Even the bolt head interface needs the same treatment as it's frictional load is additive. I admit to wanting to lubricate everything as a preservation measure especially since I work a lot with older often well used bikes.  It has been my experience that this type of warning or clearly specified thread treatment procedure is not often given or available for guys like us.  I've encountered cases where there is no factory manual either existing or available and if the parts are rare or very expensive I choose to err on the side of lubrication and less torque and wait to see if it holds. Lee  

--- On [b]Mon, 8/23/10, Jeff Khoury [i][/i][/b] wrote: From: Jeff Khoury Subject: Re: [DSN_KLR650] Molydisulfide grease? To: "mark ward" Cc: "List KLR" DSN_KLR650@yahoogroups.com> Date: Monday, August 23, 2010, 9:10 AM   A quick google search yields many references to using moly grease on head bolts.  I've never done it, although I might now.  -Jeff Khoury ----- Original Message ----- From: "mark ward" To: "List KLR" DSN_KLR650@yahoogroups.com> Sent: Monday, August 23, 2010 9:05:06 AM GMT -08:00 US/Canada Pacific Subject: [DSN_KLR650] Molydisulfide grease?   Hey Jeff & all the clymere book, says to use Molydisulfide grease on the bolt threads and head seat when reinstalling after valve check. it's Only only time, I've, seen anything like this mentioned. INPUT?????