{"id":11430,"date":"2019-04-30T17:26:20","date_gmt":"2019-04-30T21:26:20","guid":{"rendered":"https:\/\/techlink.mynetworkcontent.com\/?p=11430"},"modified":"2019-05-02T15:13:32","modified_gmt":"2019-05-02T19:13:32","slug":"use-replacement-fasteners-with-conductive-finish-for-electrical-ground-repairs","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=11430","title":{"rendered":"Use Replacement Fasteners with Conductive Finish for Electrical Ground Repairs"},"content":{"rendered":"<p>Corroded or stripped electrical ground connections can cause a loss of module communication and other electrical system malfunctions, leading to unnecessary repairs and parts replacement. The electrical system relies on a secure, corrosion-free ground connection in order to function properly, so any damaged ground connections must be repaired to provide a good mounting point with a low resistance ground path as well as prevent future corrosion.<\/p>\n<p>Ground repair connections are accomplished using one of the following replacement fasteners with a conductive finish:<\/p>\n<ul>\n<li>Welded M6 stud and nut (Fig. 26)<\/li>\n<li>Welded M6 nut and bolt<\/li>\n<li>Welded M8 nut and bolt<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-11456\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2019\/04\/F26-M6-rivet.jpg\" alt=\"\" width=\"740\" height=\"480\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F26-M6-rivet.jpg 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F26-M6-rivet-300x195.jpg 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F26-M6-rivet-85x55.jpg 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F26-M6-rivet-200x130.jpg 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><strong>Fig. 26<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Before installing a new fastener in the current ground location or at a new mounting location, remove any grease from the repair area using a residue-free solvent. Select a location that has 20 mm (0.79 in.) clearance behind the panel surface and 20 mm (0.79 in.) clearance surrounding the stud flange.<\/p>\n<p>After drilling the mounting hole (for a new location), remove any paint and primer from the area until bare metal is visible. (Fig. 27)<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-11457\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2019\/04\/F27-M6-paint-and-primer.jpg\" alt=\"\" width=\"740\" height=\"479\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F27-M6-paint-and-primer.jpg 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F27-M6-paint-and-primer-300x194.jpg 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F27-M6-paint-and-primer-85x55.jpg 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F27-M6-paint-and-primer-200x130.jpg 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><strong>Fig. 27<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Install the appropriate new fastener and check that it is securely fastened without any detectable movement.<\/p>\n<p>When installing the M6 conductive rivet stud, assemble the rivet stud tool (Fig. 27, #2) with the groove and flare side facing the rivet stud (Fig. 27, #1), and then the washer and the M6 nut. (Fig. 27, #3)<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-11458\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2019\/04\/F27-M6-stud.jpg\" alt=\"\" width=\"740\" height=\"481\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F27-M6-stud.jpg 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F27-M6-stud-300x195.jpg 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F27-M6-stud-85x55.jpg 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2019\/04\/F27-M6-stud-200x130.jpg 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><strong>Fig. 27<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Cover the stud threads with painter\u2019s tape or equivalent and refinish the repair area using an anti-corrosion primer.<\/p>\n<p><strong>TIP:<\/strong> The surrounding area must be properly finished prior to the installation of the ground wire terminal and conductive nut to maintain a secure, stable and corrosion-free electrical ground.<\/p>\n<p>Thoroughly clean the stud threads using a residue-free solvent. Once dry, apply dielectric lubricant to the threads.<\/p>\n<p><strong>TIP:<\/strong> Fretting corrosion is a build-up of insulating, oxidized wear debris than can form when there is a small motion between electrical contacts, causing electrical resistance across the connection.<\/p>\n<p>Remove any corrosion or contamination on the electrical ground wire terminal. Install the terminal, tighten the conductive nut to the proper torque and verify system operation.<\/p>\n<p>For additional details on electrical ground connection repairs, refer to the latest version of Bulletin #10-08-45-001. The bulletin includes a list of part numbers for the replacement fasteners and special tools.<\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Thanks to Sherman Dixon<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Corroded or stripped electrical ground connections can cause a loss of module communication and other electrical system malfunctions, leading to unnecessary repairs and parts replacement. The electrical system relies on [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-11430","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/11430","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11430"}],"version-history":[{"count":2,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/11430\/revisions"}],"predecessor-version":[{"id":11489,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/11430\/revisions\/11489"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11430"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11430"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11430"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}