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S&W Revolver Detailed Disassembly, Deep Clean and Reassembly

Discussion in 'Gunsmithing & Repairs' started by _CY_, Aug 27, 2010.

  1. _CY_

    _CY_ Sharpshooter

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    S&W Revolver Detailed Disassembly, Deep Clean and Reassembly

    Revolver shown is a model 18-3 K-22 Combat Masterpiece. Details shown should be similar for all S&W revolvers.

    If you decide to tear your S&W revolver down. Take lots of digital photos to help put it back together.

    Disclaimer: Not responsible for anything, do this at your own risk. If you are unsure of anything. Do yourself a favor and take your revolver to a gunsmith.

    Let's get started:

    take off grips and main spring, which should be flat. so give a wack to flatten.

    ahome.tulsaconnect.com_toug_cpf_sw1.JPG

    pull trigger slightly to release pressure on hammer, then remove

    ahome.tulsaconnect.com_toug_cpf_sw2.JPG

    pry spring behind pin up with your finger over spring to prevent flying.

    ahome.tulsaconnect.com_toug_cpf_sw3.JPG

    remove trigger

    ahome.tulsaconnect.com_toug_cpf_sw4.JPG



    ahome.tulsaconnect.com_toug_cpf_sw5.JPG
     
  2. _CY_

    _CY_ Sharpshooter

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    Remove cylinder

    ahome.tulsaconnect.com_toug_cpf_sw6.JPG

    ahome.tulsaconnect.com_toug_cpf_sw7.JPG

    carefully pry out cylinder stop and spring

    ahome.tulsaconnect.com_toug_cpf_sw8.JPG



    [Broken External Image]

    ahome.tulsaconnect.com_toug_cpf_sw10.JPG
     
  3. _CY_

    _CY_ Sharpshooter

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    replacing cylinder stop

    ahome.tulsaconnect.com_toug_cpf_sw11.JPG

    measuring new vs old

    ahome.tulsaconnect.com_toug_cpf_sw12.JPG

    ahome.tulsaconnect.com_toug_cpf_sw13.JPG

    be careful to only use correct size screwdrivers to prevent damage

    ahome.tulsaconnect.com_toug_cpf_sw14.JPG

    be extra careful when removing cylinder safety stop. tiny spring loaded pin will go flying, never to be seen again.

    ahome.tulsaconnect.com_toug_cpf_sw15.JPG
     
  4. _CY_

    _CY_ Sharpshooter

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    down to the bare frame, except rear sight and spring loaded front cylinder pin holder.

    ahome.tulsaconnect.com_toug_cpf_sw16.JPG

    clamp cylinder pin tightly with a flat vise with wood face. rotate carefully, rocking both direction until cylinder comes loose. some cylinders are right hand, some left hand threads.

    ahome.tulsaconnect.com_toug_cpf_sw17.JPG

    ahome.tulsaconnect.com_toug_cpf_sw18.JPG
     
  5. _CY_

    _CY_ Sharpshooter

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    place all parts on shallow pan

    ahome.tulsaconnect.com_toug_cpf_sw25.JPG

    spray down generously with simple green, then allow to soak.

    ahome.tulsaconnect.com_toug_cpf_sw22.JPG

    simple green will quickly dissolve years of dry grease.

    ahome.tulsaconnect.com_toug_cpf_sw23.JPG

    [Broken External Image]
     
  6. _CY_

    _CY_ Sharpshooter

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    scrub with a toothbrush. some parts will need another shot of simple green.

    ahome.tulsaconnect.com_toug_cpf_sw26.JPG

    ahome.tulsaconnect.com_toug_cpf_sw27.JPG

    rinse in warm plain water

    ahome.tulsaconnect.com_toug_cpf_sw29.JPG

    all clean, but still wet

    ahome.tulsaconnect.com_toug_cpf_sw30.JPG
     
  7. _CY_

    _CY_ Sharpshooter

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    after drying, soak down all parts generously with Breakfree to lubricate

    ahome.tulsaconnect.com_toug_cpf_sw31.JPG

    ahome.tulsaconnect.com_toug_cpf_sw32.JPG

    dry off excess lube

    ahome.tulsaconnect.com_toug_cpf_sw33.JPG
     
  8. _CY_

    _CY_ Sharpshooter

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    Next up is smoothing out the trigger on this model 18-3. which was very nice to begin with. pull weight in single action was 2lb 14oz. double action was 9lb 9oz and very smooth already.

    tempting to leave it alone, but since we are this far in... might as well smooth it out further. which means to stone every part that rubs against anything. sear will be left alone at 2lb 14oz.
     
  9. _CY_

    _CY_ Sharpshooter

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    thanks... I'm set up with stones of different grits and shapes. will be using a medium grit with oil in the next part.

    ahome.tulsaconnect.com_toug_cpf_sw34.JPG

    only necessary to stone high spots

    ahome.tulsaconnect.com_toug_cpf_sw35.JPG

    stone round profile up to edge, taking care not to touch sharp edge of trigger sear.

    ahome.tulsaconnect.com_toug_cpf_sw36.JPG

    when stoning hand, take care not to disturb profile or timing will change

    ahome.tulsaconnect.com_toug_cpf_sw37.JPG

    make sure safety rides smoothly in groove located on side plate

    ahome.tulsaconnect.com_toug_cpf_sw38.JPG

     
  10. _CY_

    _CY_ Sharpshooter

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    knock off all sharp edges from new cylinder stop. since stop will be dragging on cylinder walls. Arkansas white rock for a fine finish

    ahome.tulsaconnect.com_toug_cpf_sw39.JPG

    new cylinder stop is checked for fit ... much better

    ahome.tulsaconnect.com_toug_cpf_sw42.JPG

    reassembly is reverse of taking apart...

    ahome.tulsaconnect.com_toug_cpf_sw43.JPG

    spring is tricky to get back in without spring flying. screw driver blade needs to be thin enough to fit inside groove, pushing spring over pin

    ahome.tulsaconnect.com_toug_cpf_sw44.JPG

    ahome.tulsaconnect.com_toug_cpf_sw46.JPG

    reassemble cylinder pin with blue locktite, allows later disassembly.
    if pin comes loose, revolver could jam

    ahome.tulsaconnect.com_toug_cpf_sw47.JPG

    ahome.tulsaconnect.com_toug_cpf_sw48.JPG
     

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