Since you asked "why", not just "will it hold" - Just plain torquing bolts does not give a predictable amount of hold from the bolts, as the amount of rust or dirt or lubrication in the threads will affect the relationship between torque and clamping force. For ultra-critical camping (like the head bolts on a nuclear reactor) they use studs and stretch them with a machine, then snug down the nuts. THat "extra turn" is usually designed to stretch the bolt to the yield point without stretching it to the point of failure. In the case of a brake caliper hold down, that's a little over the top. Either loctite (as specified here) or "safety wires" or a turned up tab on a shim (like the 99 or early C900) combined with "good and tight" is enough. And 155 ft. lb. is definitely "good and tight" for those modest sized bolts.
posted by 24.165.160...
Posts in this Thread:
Members can receive an alert when someone posts in this thread.
Post a Followup
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no Spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Conact |
Your address is: 220.127.116.11 - Using CCBot/2.0 - Logged.
Site Members do not see red text instructions, green links, and bottom of the page banners.
Click here to see all
the Site Membership Benefits!