{"id":51,"date":"2013-01-22T22:13:11","date_gmt":"2013-01-22T22:13:11","guid":{"rendered":"http:\/\/ricksmotorsportelectrics.com\/tips\/?p=51"},"modified":"2013-01-22T22:13:11","modified_gmt":"2013-01-22T22:13:11","slug":"trouble-shooting-for-field-excited-charging-systems","status":"publish","type":"post","link":"https:\/\/ricksmotorsportelectrics.com\/blog\/trouble-shooting-for-field-excited-charging-systems\/","title":{"rendered":"Trouble Shooting for Field Excited Charging Systems"},"content":{"rendered":"

Charing Systems Failure Trouble Shooting Tips<\/h1>\n

Professional advice about trouble shooting charging system failure on Honda and Yamaha engines by Rick’s Motorsport Electrics.<\/p><\/blockquote>\n

Instructions for Honda and Yamaha Engines<\/h2>\n

Honda CB650 Year \/ Make \/ Model:<\/strong> 1979-1983 Honda CB650\/750\/900\/1000<\/p>\n

Yamaha XJ550 Year \/ Make \/ Model:<\/strong> 1980-1983 Yamaha XJ550\/650\/750 & 1975-83 XS650<\/p>\n

What Causes Rotor Failure?<\/h2>\n

When charging failure occurs, it is most often the rotor<\/a>.<\/strong> Heat and vibration break down the insulation on the copper wire inside the rotor resulting in a \u201cshort\u201d of the current from one coil to the next. This prevents the electro-magnet rotor from providing sufficient magnetic strength to produce a strong charge in the stator. A secondary problem may now surface. When the internal rotor \u201cshort\u201d occurs, the resistance in the rotor goes down and current flow increases. This puts a heavy load on the rectifier\/regulator and may burn out the regulator unit. When the rotor fails, always replace the rectifier\/regulator<\/a>.<\/strong><\/p>\n

How To Test a Rotor<\/h2>\n
    \n
  • Clean a spot on each of the 2 slip rings<\/li>\n
  • Set a digital OHMs meter to 0-20 OHMs<\/li>\n
  • Put one probe on one ring, and one on the other<\/li>\n
  • Record the OHM reading<\/li>\n<\/ul>\n

    An \u201copen\u201d reading or low reading of 1 OHM or less is bad. A good rotor reads 4-6 OHMs.\u00a0A reading between this indicates a questionable rotor & the decision to replace it should be
    \nmade by the technician.<\/p>\n

      \n
    • Now test from any one ring to the steel base (A good rotor should have NO continuity)<\/li>\n<\/ul>\n

      If your rotor tests good – test the stator<\/h3>\n
        \n
      • Identify the 3 stator wires (probably all yellow)<\/li>\n
      • Check all 3 wires for continuity (approximately. .5 \u2013 1 OHM)<\/li>\n
      • There should be no continuity to ground<\/li>\n<\/ul>\n

        There is no field test for the rectifier\/regulator, however we can test your unit at our\u00a0facility.<\/p>\n

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        \u00a9 2013 Rick\u2019s Motorsport Electrics, Inc. All Rights\u00a0Reserved\u00a0Worldwide.<\/p>\n","protected":false},"excerpt":{"rendered":"

        Steps to trouble shooting charging systems failure on Honda and Yamaha motorcycle engines. <\/p>\n","protected":false},"author":1,"featured_media":52,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[10,11,12,13,14,15,16],"class_list":["post-51","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to","tag-charging-systems","tag-honda","tag-honda-cb650","tag-rotors","tag-trouble-shooting-tips","tag-yamaha","tag-yamaha-xj550"],"_links":{"self":[{"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/wp\/v2\/posts\/51","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/wp\/v2\/comments?post=51"}],"version-history":[{"count":0,"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/wp\/v2\/posts\/51\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/wp\/v2\/media?parent=51"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/wp\/v2\/categories?post=51"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ricksmotorsportelectrics.com\/blog\/wp-json\/wp\/v2\/tags?post=51"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}