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techtalk:ih:engmech02 [2020/06/20 21:36]
hippysmack [Tappets (Lifters)]
techtalk:ih:engmech02 [2021/06/16 16:01] (current)
hippysmack [Cam Gear Selection for Quiet Operation]
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 |  68 Gearcsae Cover ((photo by Bobeaser of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=563241)) ​ | |  68 Gearcsae Cover ((photo by Bobeaser of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=563241)) ​ |
 |{{:​techtalk:​ih:​engmech:​68_cam_cover_by_bobeaser.jpg?​direct&​300|}}| |{{:​techtalk:​ih:​engmech:​68_cam_cover_by_bobeaser.jpg?​direct&​300|}}|
-====== Cam Bearings ======+====== Cam Bearings ​/ Bushings ​====== 
 + 
 +===== Sub Documents ===== 
 +  * [[techtalk:​ih:​engmech02c|Installing,​ Pinning and Reaming Cam Bushings]]
  
 |{{:​techtalk:​ih:​engmech:​78_cam_bearings_by_dirtycory.jpg?​direct&​400|}}| |{{:​techtalk:​ih:​engmech:​78_cam_bearings_by_dirtycory.jpg?​direct&​400|}}|
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 ====== Camshaft Shims ====== ====== Camshaft Shims ======
  
-  * Camshaft shims (6769 6770)used to control maximum ​camshaft ​end play were discontinued in 1982 production engines. ​It was determined ​through engineering testing ​that an increase in the maximum allowable cam gear shaft end play does not contribute to an increase in noise or prove to be detrimental to component operation. ​((HD Service Bulletin #M860 dated November 12, 1982 pg 1)) +  ​*Per Service Bulletin #M-860, the shims for the cams are no longer suggested for use by the MoCo. ((HD Service Bulletin #M860 dated November 12, 1982 pg 1)) 
-  * When reassembling engines after service or repair, it isn'​t ​necessary to re-install the camshaft shims. ​The cam gear shaft end play should be measured following the procedure in your FSM. Observe the minimum end play specs of 0.005" for all cam gears, except rear intake which is 0.004" ​min. end play. It is no longer ​necessary to measure ​__maximum__ ​cam gear shaft end play.  ​((HD Service Bulletin ​#M860 dated November 12, 1982 pg 1))+  ​*Camshaft shims (Part No. 6769 and 6770) used to control maximum ​cam gear shaft end play have been discontinued in production engines. ​\\ Engineering testing has determined that an increase in the maximum allowable cam gear shaft end play does not contribute to an increase in noise. \\ Nor does it prove to be detrimental to component operation. ​\\ When reassembling engines after service or repair, it is not necessary to reinstall ​camshaft shims. ​\\ Cam gear shaft end play should be measured following the procedure in the latest applicable Service Manual\\ Observe the minimum end play specifications ​of .005" for all cam gears, except rear intake which is .004" ​minimum ​end play. \\ It is not necessary to measure ​maximum ​cam gear shaft end play. 
 +  * [[techtalk:​miscres:​miscres05#tsb_850-899|Click here]] to go to the TSB page in the Sportsterpedia. Click on the "​Y"​ next to M-860 to download the service bulletin.
  
 ====== Gearcase Cover ====== ====== Gearcase Cover ======
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 ====== Pinion Gear ====== ====== Pinion Gear ======
 +Click on any pic below to enlarge: \\ 
 +\\
 **Compatibility** **Compatibility**
 +1957-1985 pinion gears have 18 teeth and splines to match the splined pinion shaft. \\
 +1957-1976 pinion gears have 4 splines. \\
 +1977-1985 pinion gears have 6 splines. \\
  
 |Part#|Year Models| |Part#|Year Models|
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 |24061-74 (black)|:::​| |24061-74 (black)|:::​|
  
 +|  1957-1976 Pinion Gear. ((photo courtesy of Ebay seller, Evil Genius M/C Parts. [[https://​www.ebay.com/​str/​evilgeniusmcparts?​_trksid=p2047675.l2563|Link to Ebay Store]] ))  ||
 +|{{:​techtalk:​ih:​engmech:​pinion_gear_pic2_24011-37_by_evilgeniushd1936.jpg?​direct&​300|}}|{{:​techtalk:​ih:​engmech:​pinion_gear_pic1_24011-37_by_evilgeniushd1936.jpg?​direct&​300|}}|
  
 +|  1977-1985 Pinion Gear (24057-74) ((photos courtesy of Ebay seller, Robison Motorcycles [[https://​www.ebay.com/​str/​robisonmotorcycles?​_trksid=p2047675.l2563|Link to Ebay Store]] ))  ||  1977-1985 Pinion Gear (24056-74) App. Dims ((photos courtesy of Ebay seller, Robison Motorcycles [[https://​www.ebay.com/​str/​robisonmotorcycles?​_trksid=p2047675.l2563|Link to Ebay Store]] ))  |
 +|{{:​techtalk:​ih:​engmech:​pinion_gear_24057-74_pic2_by_robisonmotorcycles.jpg?​direct&​300|}}|{{:​techtalk:​ih:​engmech:​pinion_gear_24057-74_pic1_by_robisonmotorcycles.jpg?​direct&​300|}}|{{:​techtalk:​ih:​engmech:​pinion_gear_24056-74_app_dims_by_robison_motorcycles.jpg?​direct&​300|}}|
 ====== Tappets (Lifters) ====== ====== Tappets (Lifters) ======