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techtalk:ih:engctl01a [2023/12/31 17:28] – hippysmacktechtalk:ih:engctl01a [2025/07/28 22:42] (current) – [Breaker Points Seal] hippysmack
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 ==== Manual Advance Dual Point Circuit Breaker ==== ==== Manual Advance Dual Point Circuit Breaker ====
 ====== Internal Circuit Breaker (71-78) ====== ====== Internal Circuit Breaker (71-78) ======
 +===== Breaker Points Seal =====
 +This is a steel shell radial shaft seal (HD# 11124) installed in the cam cover. \\
 +It surrounds and seals #2 cam when the cover is installed. Also used on 1986-2003 model Sportster cam covers. \\
 +Dims per XLForum member, Fizzle: \\
 +OD 1.570" (39.878mm)
 +ID 1.050" (26.67mm)
 +W 0.248" (6.2992mm)
 +
 +Other brands include James (JGI-11124), Cometic (C9355), Athena (51-A210), Custom Chrome (54-043). \\
 +The rubber shell HD Genuine double lip version is part number (11124-DL). \\
 +Other brands include James (JGI-11124-DL). \\
 +**NOTE**: __SKF makes a radial shaft seal with a part number of 11124 but that IS NOT AN HD PART NUMBER__. \\
 +SKF 11124 IS TOO BIG TO FIT THE COVER and they don't show a compatible seal in their catalog for this application. \\
 +
 +HD Seal (11124): \\
 +
 +{{:techtalk:ih:engmech:1971-2003_nosecone_ignition_seal_11124_by_hippysmack.jpg?direct&400|}} ((photo by Hippysmack))
 ===== Roll Pin ===== ===== Roll Pin =====
 AKA "split pins". These are hollow pins that have a split in them and are held in holes by their own spring tension. ((needspeed of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187639-timing-180-deg-out?t=2003348)) \\ AKA "split pins". These are hollow pins that have a split in them and are held in holes by their own spring tension. ((needspeed of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187639-timing-180-deg-out?t=2003348)) \\
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 If the bike will backfire, spit and cough very badly with the cam plate adjusted, \\  If the bike will backfire, spit and cough very badly with the cam plate adjusted, \\ 
-Check for missing, bent or destroyed roll pins on the plate. ((Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=2003348&page=2)) \\ +Check for missing, bent or destroyed roll pins on the plate. ((Ferrous Head of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187639-timing-180-deg-out/page2?t=2003348&page=2)) \\ 
  
 |The 1st roll pin is on the top side of timing \\ plate assembly. ((photo by The Doctor71 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187639-timing-180-deg-out?t=2003348))|The 2nd roll pin is on the back side of the \\ timing plate assembly. ((photo by The Doctor71 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187639-timing-180-deg-out?t=2003348))|During installation, the back side roll pin \\ aligns with the notch in the #2 cam ((photo by The Doctor71 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187639-timing-180-deg-out?t=2003348))| |The 1st roll pin is on the top side of timing \\ plate assembly. ((photo by The Doctor71 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187639-timing-180-deg-out?t=2003348))|The 2nd roll pin is on the back side of the \\ timing plate assembly. ((photo by The Doctor71 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187639-timing-180-deg-out?t=2003348))|During installation, the back side roll pin \\ aligns with the notch in the #2 cam ((photo by The Doctor71 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187639-timing-180-deg-out?t=2003348))|
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   * Auto advance 1st appeared on the 1965 XLH. It was also used on the 1966 XLH also. ((Dr Dick https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page22?t=1062720&page=22))   * Auto advance 1st appeared on the 1965 XLH. It was also used on the 1966 XLH also. ((Dr Dick https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page22?t=1062720&page=22))
   * For 1967 models, the advance mechanism got changed to the familiar setup and a tach drive was added. ((Dr Dick https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page22?t=1062720&page=22)) ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261))   * For 1967 models, the advance mechanism got changed to the familiar setup and a tach drive was added. ((Dr Dick https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page22?t=1062720&page=22)) ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261))
-  * The -67 ones allow for better low speed around town manners,  but they allow a little more 'kickback' than the -69 when hot starting using the button.((Dr Dick http://xlforum.net/forums/showthread.php?t=1062720&page=22)) ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261))+  * The -67 ones allow for better low speed around town manners,  but they allow a little more 'kickback' than the -69 when hot starting using the button.((Dr Dick https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page22?t=1062720&page=22)) ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261))
   * The black -70 springs in these timers don't seem to work nearly as good as when using either -67 or -69. ((Dr Dick https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page22?t=1062720&page=22))   * The black -70 springs in these timers don't seem to work nearly as good as when using either -67 or -69. ((Dr Dick https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page22?t=1062720&page=22))
  

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