Petter Junior 1922 Diaphragm

Discussion in 'Help Wanted' started by Thebulldog351, Nov 20, 2019.

  1. Thebulldog351

    Thebulldog351 New Member

    Does any know where I can get a used or new diaphragm for my Petter Junior 1922 oil engine please
     
  2. petternut

    petternut Moderator

    An oil or olive oil tin, or similar, is a good source of steel to make one from. I do not know of a supplier of diaphragms.
     
    chas likes this.
  3. Thebulldog351

    Thebulldog351 New Member

    Many thanks for the response Roland and much appreciated, that explains what the previous owner has done and I thought was a bodge. Needs be I suppose! However, not wanting to take advantage but there is an home made gasket between the cover plate and the diaphragm but nothing between the diaphragm and the crankcase. is this correct?
     
  4. petternut

    petternut Moderator

    No. Should be gaskets on both sides of the diaphragm, each about 0.015" thick.
     
  5. Thebulldog351

    Thebulldog351 New Member

    Petternut your a star, one last thing on this topic and I will leave you alone for a while. should the inner gasket have the inner circle cut out to allow the diaphragm to flex? and in these modern times would you use any silicone type material on the faces?
     
  6. petternut

    petternut Moderator

    Yes. I don't find it necessary with new gaskets but it's your choice.
     
  7. Thebulldog351

    Thebulldog351 New Member

    Many thanks Roland...…….and you help is very much appreciated.
     
    chas likes this.

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