Rc24 diaphragms

Discussion in 'Australia & New Zealand' started by shirmik, Feb 19, 2022.

  1. shirmik

    shirmik New Member

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    Have bought 4 new diaphragms for the old girl, one was split badly. Has anyone changed them before because for the life of me I can’t see any easy way of getting the old ones out let alone the new ones in.
    Any help would be much appreciated.
     
  2. 50th VFR

    50th VFR New Member

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    Remove cover on top of carb which is held on by four screws. Use JIS No1 screwdriver NOT Pozi or Phillips and you will have more chance of success.

    Remove spring and place cover, screws and spring safe.

    After over 30 years in place the diaphragm will have bonded itself to the carb body. Use a sharp pic tool to get under the outer edge if the diaphragm and gently tease it out.

    When rebuilding I use some Allen headed bolts to make job easier next time.

    A JIS No1 and No2 screwdrivers are a worthwhile investment when working on Japanese motorcycles. They are designed to fit the cross head JIS screws fitted to the bike. They cam out significantly less than a Pozi or Phillips screwdriver when used on a JIS head.
    I, like many, used Pozi drivers for years till I read an engineering article which explained it all.
     
  3. shirmik

    shirmik New Member

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    Thanks for that info. The one that I have pulled out was the bad one and the diaphragm just tore away as I was trying to get it out. Will give the pick tool a try for sure. As you say, been there since birth so pretty much become part of the slide!!
    I thought maybe the top of the slide was like a locking ring that came off but don’t want to put that much pressure on it. Can be a bit of a dilemma when slides are no longer produced anywhere.
     
  4. shirmik

    shirmik New Member

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    Opps....just re read your message and I do have the slides out of the carbs. My problem is getting the old diaphragm off the slide and the new one on.
     
  5. 50th VFR

    50th VFR New Member

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    The original diaphragm is bonded to the slider and meant to be replaced as a single part comprising of slider and diaphragm.

    If you have new diaphragms you will need to cut away old diaphragm and glue and fit new ones using a petrol resistant glue.

    I am assuming a company has made replacements as OEM parts were UK£200 each and now obsolete. Would company that supplies diaphragms be able to suggest suitable glue ?
     
  6. shirmik

    shirmik New Member

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  7. shirmik

    shirmik New Member

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    That’s a possibility. Will have to do some more googling I guess.
     
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