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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #1  
Old 14th October 2018
Hennepinboy Hennepinboy is offline
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Default 35mm Kayaba Fork Disassemble

I am having problems removing the allen bolts on the bottom of a 35mm Kayaba forks from a 74 XL. The internal piston assembly keeps turning. I have attempted to remove with both the forks off the bike and the spring removed and on the bike with the spring in place. Is there a trick to hold the piston assembly.
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Old 14th October 2018
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best method is an impact gun for removing. it won't spin on you that way. otherwise you'll need to jam a wedge shaped piece of broom handle or the like to keep it from spinning. i prefer the impact gun to this.
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Old 15th October 2018
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Loosen the cap screw with the fork tube assembled. The pressure from the spring holds it tight.
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Old 15th October 2018
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Thank you for the hint of using an impact gun. Spun the bolts out easy.

I thought the forks where Kayaba, now I am not sure. Outside looks like Kayaba, inturnals look more like Showa. No marking on the fork legs??????????
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Old 15th October 2018
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Quote:
Originally Posted by Hennepinboy View Post
Thank you for the hint of using an impact gun. Spun the bolts out easy.

I thought the forks where Kayaba, now I am not sure. Outside looks like Kayaba, inturnals look more like Showa. No marking on the fork legs??????????
Showa picked up HD in '75. If you can post pictures of the parts and internals I can tell you if they're Showa or not.
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Old 16th October 2018
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The FSM shows both Showa and Kayaba forks with exploded diagrams, so identifying them should be a no-brainer. Contrary to popular belief, HD used both, depending on what was in stock at the time of assembly. For instance, my 1977 XLH has Kayaba forks.
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Don't use red locktite when assembling Blue only or better yet none.
Use a new copper washer or at least flip over the old one.
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