matthewryan2k Posted May 12, 2007 Report Share Posted May 12, 2007 hello, im in desperate need of help here. got a tm hicapa 5.1 that im cosmetically upgrading with shiny silver parts. just installed a new trigger onto it, closed it up again and it wouldnt fire. consulted wege's hi-capa takedown (and also emailed him receiving helpful suggestions) and various other tutorials and have at least managed to make it so you can cock the hammer, pull the trigger and the hammer goes back up as it should do. from this i understand that the leaf spring is aligned properly as before the hammer whould be jammed, so it at least works the problem here is that when i put the slide back on and cock the hammer, it stays down and pullling the trigger doesnt have any effect. randomly fires, sometimes in full auto!!!! i have come to the conclusion that it is this part of the gun, circled below that is causing the problem: it seems to be in an up position so that when pressed or the slide is moved over it, it pushes it down, jamming the hammer in the down position. i didnt take any of that section of the gun apart so i cant see that ive done aything. hopefuly someone can give me ideas on fixing this as i cant see anything else that can be done. thanks Link to post Share on other sites
Påffter Posted May 13, 2007 Report Share Posted May 13, 2007 Your leaf spring isn't properly lined up. I had this problem to but some guys at the ISPC meeting we had helped me with it. Your leaf spring could be worn down and therefore leading to full-auto fire. Contrary to say KSC1911 the leaf spring on a TM Hi-Capa should slide right in without the use of force. Last but not least; Do NOT fire the gun until you know for certain that all parts are correctly installed and working. Rack the gun open, push down the slide catch, safety on. Squeeze the trigger, if the hammer moves something's up; if the hammer falls once you push the safety down something's up. Safety off, fire. Cock hammer; uncock hammer. Once you've fulfilled all these criterias you can load the mag with gas and do some dry-shooting. Link to post Share on other sites
matthewryan2k Posted May 14, 2007 Author Report Share Posted May 14, 2007 so it is likely to be the leaf spring? i cant understand why it is okay until you put the slide on because it seems like it is aligned as it should be Link to post Share on other sites
Wege Posted May 14, 2007 Report Share Posted May 14, 2007 take a nice clear picture of it if possible? Not partially blurry?.. change the shot to Macro (the one with the flower icon) Link to post Share on other sites
matthewryan2k Posted May 14, 2007 Author Report Share Posted May 14, 2007 ive just gone back to art college for two weeks but when im back home ill take my super camera so i can get some non-blurry images. Link to post Share on other sites
Sale Posted May 14, 2007 Report Share Posted May 14, 2007 The part you have circled is the firing pin lock. It locks the firing pin forward for a short time. It doesn't affect the hammer, so it shouldn't be your problem. BTW. Usually these things work with the firing pin lock removed, because the pressure of green gas is enough to cycle the slide anyways. Removing the valve lock is one way to run green gas without stressing the slide that badly. It sounds more like your leaf spring isn't pushing the sear properly forward, and that the right finger of the leaf spring isn't pushing the disconnector upwards properly. The combination of these problems could lead to the problems you described: Won't fire, then all of the sudden goes full auto. -Sale Link to post Share on other sites
Curious Posted May 15, 2007 Report Share Posted May 15, 2007 Got a link to Weges take down guide? Cheers, Dom Link to post Share on other sites
matthewryan2k Posted May 15, 2007 Author Report Share Posted May 15, 2007 thanks for the help, does sound like the leaf spring now, shame i cant check for another 2 weeks but ill stick a picture of it up for reference. all this just to add a stupid new trigger Link to post Share on other sites
CobaltSky Posted May 16, 2007 Report Share Posted May 16, 2007 That leaf spring seems to be the single biggest cause of problems on hi capas. Link to post Share on other sites
matthewryan2k Posted June 1, 2007 Author Report Share Posted June 1, 2007 hello, back from college for the summer so now is the time for me to look at it again. below are pics of the leaf spring. whether or not they're useful i dont know but here they are anyway: still having the same problem: when i put the slide on is usualy when it all goes wrong. take the gun apart to reinspect the leaf spring but it seems like its in the right place, strange Link to post Share on other sites
matthewryan2k Posted June 1, 2007 Author Report Share Posted June 1, 2007 okay, just took it apart with the slide on. its only when the slide goes back that the hammer locks and you cant fire, if that's further help Link to post Share on other sites
d3daiM Posted June 2, 2007 Report Share Posted June 2, 2007 bump I'm having this same problem, except my problem is associated with the RIGHT button on top. Link to post Share on other sites
Wege Posted June 2, 2007 Report Share Posted June 2, 2007 I think I got it. Check your leaf spring. Do the prongs look like this? http://img.photobucket.com/albums/v634/weg.../Picture010.jpg In your 2nd picture.. it seems as though the middle prong is pretty much flat... and it shouldn't be. Link to post Share on other sites
matthewryan2k Posted June 2, 2007 Author Report Share Posted June 2, 2007 had a look at the leaf spring, ive tried it in all manner of postitions (the middle prong) . sometimes it will allow random firing: automatic/semi, the hammer doesnt always stay fully down. other times the hammer locks back after the slide blowsback and after the initial shot it doesnt fire at all. could this simply be a need for a new leaf spring as i have tried everything! i've even become a master of replacing the leaf spring without needing to take off the grip or slide (much quicker) Link to post Share on other sites
Wege Posted June 2, 2007 Report Share Posted June 2, 2007 ok.. find someone near you with a 5.1 and try theirs.. then try yours in theirs... if they will allow you.. Link to post Share on other sites
matthewryan2k Posted June 2, 2007 Author Report Share Posted June 2, 2007 i think i have success....kind of. seems to fire as it should do (i.e. not in automatic, or when you put the magazine in etc..) but sometimes it doesnt allow you to fire- you have to manualy pull the slideback to get it to fire. so maybe this is a new problem? (all this for a new trigger!!!). probably should point out it has a shooters design metal slide on it so maybe more powerful hammer spring would sort it out? Link to post Share on other sites
Wege Posted June 3, 2007 Report Share Posted June 3, 2007 ok.. there should have been SOO much information passed on right at the start. I am leaving this thread. Cya Link to post Share on other sites
matthewryan2k Posted June 3, 2007 Author Report Share Posted June 3, 2007 okay, i have a noose and a stool ready. please i still need help. pinpointed specificaly the problem. hammer works fine, its just when the slide cycles it seems to be pushing down on those two silver parts highlighted earlier causing the hammer to stay down. usualy manualy cocking the slide a few times makes it work. Link to post Share on other sites
Curious Posted June 5, 2007 Report Share Posted June 5, 2007 I just had a similar problem, If I describe my symptoms, if yours match, Ill give you the solution. Take the slide off and cock the hammer manually then fire, does it shoot like normal? Then put the slide on, rack it, does it shoot? Do all this with no mag. Dom Link to post Share on other sites
matthewryan2k Posted June 5, 2007 Author Report Share Posted June 5, 2007 I just had a similar problem, If I describe my symptoms, if yours match, Ill give you the solution. Take the slide off and cock the hammer manually then fire, does it shoot like normal? Then put the slide on, rack it, does it shoot? Do all this with no mag. Dom <{POST_SNAPBACK}> with the slide off, cocking the hammer allows firing of the weapon when i put the slide on, there seems a 50/50 chance that it will allow you to shoot. when it doesnt shoot the hammer stays down as normal but requires pressing down slightly until a clicking noise happens. then it allows you to fire. thanks in advance for helping my continual struggle, heres a lovely picture of the gun you are helping to save: Link to post Share on other sites
Curious Posted June 6, 2007 Report Share Posted June 6, 2007 Round 2 of questions: Did you happen to buy a new PDI Sear for your hi-capa and install it? Could you take a picture of the SIDE view of your leaf spring, to see the prong alignment? Dom Link to post Share on other sites
matthewryan2k Posted June 6, 2007 Author Report Share Posted June 6, 2007 Round 2 of questions: Did you happen to buy a new PDI Sear for your hi-capa and install it? Could you take a picture of the SIDE view of your leaf spring, to see the prong alignment? Dom <{POST_SNAPBACK}> all the internal working parts are stock tm. the sear is the same as the one that came with the gun bought new (no previous owners) images of the leaf spring: also a note: i have tried the leaf spring prongs in pretty much all directions and this seems to be the only one that doesnt make the hammer unmovable (and thus prevent firing) Link to post Share on other sites
Wege Posted June 6, 2007 Report Share Posted June 6, 2007 and there we have it. Link to post Share on other sites
Espina Posted June 6, 2007 Report Share Posted June 6, 2007 i get same problem monts ago. Guys, please look your pictures and find the diferences in that springs... the problem, its because you spring loose the original form. you can do 2 things. buy a new spring. get old spring and give the original form. Link to post Share on other sites
Curious Posted June 6, 2007 Report Share Posted June 6, 2007 Wow that is a seriously messed up leaf spring. Describe, as accurately as you can, where you are placing this messed up leaf spring and its prongs inside the hammer mech. Dom Link to post Share on other sites
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