Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1
    Senior Member greywolf67nt's Avatar
    Join Date
    Jun 2014
    Location
    Norman Wells, NT
    Posts
    1,231

    Loctite on SVT40.

    The gas cylinder keeps working its way loose on my SVT.
    Does anyone think a little Loctite would hurt anything?
    Don't give up SQUAT!
    ZERO Compliance!

  2. #2
    Senior Member Strewth's Avatar
    Join Date
    Apr 2012
    Location
    Chilliwack BC
    Posts
    8,524
    Do you mean the gas piston(which makes no sense to me as it's stationary)? The part that screws in the rear of the gas block that the cup slides over? ....I can't see why not...although I would definitely recommend a sparing dab of blue, so it can come apart again. How do you tighten it after cleaning? I crank it tight with the gas tool? Hand tight only worked for me if I was shooting 20-30 rounds?
    CSSA CCFR

  3. #3
    Senior Member greywolf67nt's Avatar
    Join Date
    Jun 2014
    Location
    Norman Wells, NT
    Posts
    1,231
    The part that screws into the gas block that the cup fits over.
    I have cranked on it with my SVT tool but 10 rounds later I have FTE and FTF problems.
    Someone else suggested some plumbers tape. Would it melt with the heat from the gas system?
    Don't give up SQUAT!
    ZERO Compliance!

  4. #4
    Super Moderator Rory McCanuck's Avatar
    Join Date
    Apr 2012
    Location
    Middle of Manitoba
    Posts
    12,402
    Plumber's tape is also called teflon tape.
    The teflon is there for the same reason that they make pans out of it, it's slippery.
    Pipe threads are cut on a taper, so a bit of lube allows you to screw them together a bit more, making a mechanical seal.
    Teflon tape does not seal holes.

    A good impromptu thread locker is fingernail polish.
    Easy to take apart later, but it holds alright.
    I swear blue locktite is only good for keeping threads clean so it all comes apart easily.

  5. #5
    Senior Member greywolf67nt's Avatar
    Join Date
    Jun 2014
    Location
    Norman Wells, NT
    Posts
    1,231
    I think I have it solved.
    If I turn the setting down it loosens the gas cylinder.
    SO to fix that if I want to turn it down one notch I actually have to turn it up 4 notches. That way, because they are on opposite sides of the block I am actually tightening the cylinder.
    Don't give up SQUAT!
    ZERO Compliance!

  6. #6
    Senior Member livewire0129's Avatar
    Join Date
    May 2014
    Posts
    179
    Quote Originally Posted by greywolf67nt View Post
    The part that screws into the gas block that the cup fits over.
    I have cranked on it with my SVT tool but 10 rounds later I have FTE and FTF problems.
    Someone else suggested some plumbers tape. Would it melt with the heat from the gas system?
    FTF problems wouldnt be caused by the gas system. I am also having FTF problems with my svt with surplus ammo. Some of the primers are seated deep, and I'm getting light strikes.

  7. #7
    Senior Member Doug_M's Avatar
    Join Date
    Feb 2013
    Location
    Nova Scotia
    Posts
    12,520
    Having figured out what gas setting works with mine and the ammo I have, I set it after cleaning and then torque the piston on with a small wrench. No problems but then again I am not adjusting the gas setting after the fact.

    If you want to loctite it I'd recommend getting a stainless steel piston if you're going to shoot corrosive. Then you won't have to take it apart as often.
    Liberate Hong Kong, revolution of our times [#uc# you CCP!]

  8. #8
    Moderator kennymo's Avatar
    Join Date
    Jul 2014
    Location
    Winnipeg, MB
    Posts
    12,853
    Quote Originally Posted by livewire0129 View Post
    FTF problems wouldnt be caused by the gas system. I am also having FTF problems with my svt with surplus ammo. Some of the primers are seated deep, and I'm getting light strikes.
    FTF can also be fail to feed.

  9. #9
    Senior Member Doug_M's Avatar
    Join Date
    Feb 2013
    Location
    Nova Scotia
    Posts
    12,520
    FTF might be solved by newer springs. Along with the stainless piston and cup I got new springs (they're sold out of springs but: http://www.ppsh41.com/SVTitems.html). The springs eliminated my FTF problems. May solve your light primer strikes too if the bolt is not being fully driven home.
    Liberate Hong Kong, revolution of our times [#uc# you CCP!]

  10. #10
    Senior Member greywolf67nt's Avatar
    Join Date
    Jun 2014
    Location
    Norman Wells, NT
    Posts
    1,231
    Thank you folks for the advice.
    It wasnt cycling properly in the first place, I think a result of the cylinder being loose and gas escaping, but now I know what setting it needs to be on then cranking down the cylinder works beautifully.
    Don't give up SQUAT!
    ZERO Compliance!

Page 1 of 2 12 LastLast

Similar Threads

  1. Removing old blue Loctite from threads and such
    By Ruff in forum Gunsmithing and Cleaning
    Replies: 10
    Last Post: 01-16-2020, 09:37 PM
  2. Clean your SVT40 with me
    By adrielm in forum Hunting Gear Guy
    Replies: 1
    Last Post: 09-06-2018, 12:42 PM
  3. What’s this svt40 part?
    By Dewey Cox in forum Soviet Bloc Rifles
    Replies: 10
    Last Post: 05-03-2018, 08:29 PM
  4. Is it worth it to get an SVT40?
    By El Lobo in forum Soviet Bloc Rifles
    Replies: 29
    Last Post: 04-07-2017, 06:49 PM
  5. SVT40 Extraction issues.
    By greywolf67nt in forum Soviet Bloc Rifles
    Replies: 28
    Last Post: 10-31-2014, 01:46 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •