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techtalk:evo:carb01a [2019/10/15 19:30]
hippysmack [Carb to Manifold Seal]
techtalk:evo:carb01a [2020/05/10 04:37] (current)
hippysmack [Float]
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 ==== Float ==== ==== Float ====
 +
 +As a 1994 model year running change, HD changed the configuration of the float pin pedestal. ((HD TSB #M-1035 dated 10-8-1993)) \\
 +One of the pedestals now has an interference fit to hold the float pin more securely in place. \\
 +A cast-in arrow points at the pedestal that has the interference fit and consequently the direction of pin removal. \\ 
 +The rounded pedestal has the interference fit. The pin is still a uniform width throughout its entire length, so
 +it can be installed starting from either end. \\
 +It should be tapped out from the rounded top pedestal toward the square top pedestal with a small punch or even better, a spring loaded center punch. \\
 +Install the pin in the same fashion just in reverse (from the loose side toward the rounded pedestal). \\
 +When removing or installing the float pin, be careful not to break the pedestal(s). \\
 +If the pedestal(s) is broken, the carburetor will have to be replaced. \\
 +
 +Float pin (27575-88) will not fit the new carburetor. A new float pin (27575-88A) will fit all H-D CV carburetors. \\
 +This new part will supersede the current part. \\
  
 {{:​techtalk:​evo:​carb:​removing_keihin_cv_float_bowl_1_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack)) {{:​techtalk:​evo:​carb:​removing_keihin_cv_float_bowl_6_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack)) {{:​techtalk:​evo:​carb:​removing_keihin_cv_float_bowl_2_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack)) \\ {{:​techtalk:​evo:​carb:​removing_keihin_cv_float_bowl_1_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack)) {{:​techtalk:​evo:​carb:​removing_keihin_cv_float_bowl_6_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack)) {{:​techtalk:​evo:​carb:​removing_keihin_cv_float_bowl_2_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack)) \\
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 |  Hole size comparison ((photo by Matt Black of the XLFORUM, annotated by Hippysmack http://​xlforum.net/​forums/​showthread.php?​t=2068828&​page=6)) ​ |  Torn rubber. ((photo by intoanother of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5686664)) ​ | |  Hole size comparison ((photo by Matt Black of the XLFORUM, annotated by Hippysmack http://​xlforum.net/​forums/​showthread.php?​t=2068828&​page=6)) ​ |  Torn rubber. ((photo by intoanother of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5686664)) ​ |
 |{{:​techtalk:​evo:​carb:​keihin_cv_vacuum_slide_comparison_by_matt_black_annotated.jpg?​direct&​300|}}|{{:​techtalk:​evo:​carb:​cv_vacuum_piston_by_intoanother.jpg?​direct&​300|}}| |{{:​techtalk:​evo:​carb:​keihin_cv_vacuum_slide_comparison_by_matt_black_annotated.jpg?​direct&​300|}}|{{:​techtalk:​evo:​carb:​cv_vacuum_piston_by_intoanother.jpg?​direct&​300|}}|
 +\\
 +**Installing the slide diaphragm**:​ ((HD Tech Tip #12 dated February 1988)) \\
 +The diaphragm has the appearance of being swollen and seems too large to fit into it's groove. That's not really accurate. \\
 +The repeated up and down movement of the diaphragm causes it to stretch and makes reassembly tricky. \\
 +Try using the black plastic top of the carb to position the diaphragm. \\
 +It will not only allow you to evenly push the diaphragm into the groove, but you can wiggle the top and "​feel"​ that the diaphragm is in it's proper location. \\