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The Range
Gunsmithing & Repairs
Need help with a Winchester 74
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<blockquote data-quote="Ahall" data-source="post: 3911153" data-attributes="member: 49426"><p>Old 22 autos - Dirt and crud are the most common issues - cheep dirty ammo and lots of it get fed to 22's. So a good cleaning and inspection of the parts is usually the first step.</p><p></p><p>Second step, get a good parts diagram and be sure everything is present and goes back in the right way. 22 autos are notorious for being disassembled by well-meaning folks who can't get them back together correctly or lose parts all together. </p><p></p><p>Do your diagnostics on clean parts you know are correctly assembled, then figure out what has to be done. Don't guess or assume the YouTube answer is the only possible answer.</p><p></p><p>Because of the age, ware is a potential issue - and may be apparent upon close inspection.</p><p>You seem to be having problems with the firing group, and it's a semi-auto. If you think it needs adjustment, and even question if its within your skills, take it to a smith. The fit on the some of those parts is touchy. You don't want to inadvertently create a full auto or have a mag dump you can't control. You may also have case hardened parts that will ware quickly if you take off the hardened layer stoning them back to shape. </p><p></p><p> The fact that shimming the pin corrected the malfunction indicates ware or crud is probably the issue. After everything is clean, measure the pin and hole with a set of calipers. If either are out of round, thats a good indication of worn parts, and how much they are worn.</p><p></p><p>If the fit with the pin hole is bad, a shim or bushing is probably better than welding either part. Green locktite is a common choice for mounting the shim in the receiver. </p><p></p><p>When you get to the point your ready to test fire it, follow the rule for test firing semi autos - 1 round in the clip, then 2, then 3, then a full clip. The idea is if you get a burst, rather than semi auto you don't have a lot off rounds to control. Sure it's a 22, but get in the habit anyway with all new to you guns or just repaired guns. If you have a large bore handgun run away with a full high-capacity clip you might not live to talk about it.</p></blockquote><p></p>
[QUOTE="Ahall, post: 3911153, member: 49426"] Old 22 autos - Dirt and crud are the most common issues - cheep dirty ammo and lots of it get fed to 22's. So a good cleaning and inspection of the parts is usually the first step. Second step, get a good parts diagram and be sure everything is present and goes back in the right way. 22 autos are notorious for being disassembled by well-meaning folks who can't get them back together correctly or lose parts all together. Do your diagnostics on clean parts you know are correctly assembled, then figure out what has to be done. Don't guess or assume the YouTube answer is the only possible answer. Because of the age, ware is a potential issue - and may be apparent upon close inspection. You seem to be having problems with the firing group, and it's a semi-auto. If you think it needs adjustment, and even question if its within your skills, take it to a smith. The fit on the some of those parts is touchy. You don't want to inadvertently create a full auto or have a mag dump you can't control. You may also have case hardened parts that will ware quickly if you take off the hardened layer stoning them back to shape. The fact that shimming the pin corrected the malfunction indicates ware or crud is probably the issue. After everything is clean, measure the pin and hole with a set of calipers. If either are out of round, thats a good indication of worn parts, and how much they are worn. If the fit with the pin hole is bad, a shim or bushing is probably better than welding either part. Green locktite is a common choice for mounting the shim in the receiver. When you get to the point your ready to test fire it, follow the rule for test firing semi autos - 1 round in the clip, then 2, then 3, then a full clip. The idea is if you get a burst, rather than semi auto you don't have a lot off rounds to control. Sure it's a 22, but get in the habit anyway with all new to you guns or just repaired guns. If you have a large bore handgun run away with a full high-capacity clip you might not live to talk about it. [/QUOTE]
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