GTA
Airguns by Make and Model => Vintage Air Gun Gate => Topic started by: shibumei on October 20, 2019, 12:24:02 PM
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Hey team -
Hope someone can help on a silly problem. I snagged a pristine 600 but leaks air. Sooo, I order seals and tear it down after reading the Crosman service manual. My main problem is the darn 600-81 Retainer Pins (or are they 600-36)? You know the pins that secure the valve to the tube. Let me give a little history of this cluster fuc*. Like I mentioned, this gun looks like it's pristine so I figure it's never been resealed or maybe not ever shot as the guy I got it from had all the original pellet tins and the c02 box unopened. Anyway, it is the Sears model. I open it up and try to remove the retainer pins to get the valve out. What a task!! The manual states to use a 6x32 screw to raise the pins out of the valve/tube. Well that didn't work to well and ended up stripping out the threads of the pins. I finally got the pins out with a drill but ended up damaging the valve. Oh well, ordered a rear valve and new pins from JG airguns. Got the replacement rear valve and it was made of brass while the one in the gun was aluminum. hey!??? I know there were various changes with the Crosman 600 but did they ever come with OEM aluminum valves? Okay, so I'm ready to put the replacement valve in the tube with the new pins. These pins just won't go in!!! Here is my question. Is there any difference between valves and the size of pins across variants? Specifically 600-81 or 600-36 pins? The service manual states 600-81 (two required) while parts diagram states 600-81 as upper pin and 600-36 as lower pin. Any ideas why the pins are such a pain to get in and/or remove? Don't want to screw up this valve...
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Hi before putting them back in sand or use a fine nail files get( fine files at cvs from girlfriend or wife) to buff the 2 diff pins to a smooth shine and a drop of pellet oil tap them back in should be flush with tube, this is what I do, if someone has a better answer please help as I'm new to this also.
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This gun is probably way above you're pay grade! I have two. The ONLY guy I know that can properly fix these is Tim at Mac-1 Airguns. The 600 is probably one of the most complex pellet guns ever designed! But, who knows...maybe you'll get lucky! JMHO! dave
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I have 3 wanted the 3 different version
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This gun is probably way above you're pay grade! I have two. The ONLY guy I know that can properly fix these is Tim at Mac-1 Airguns. The 600 is probably one of the most complex pellet guns ever designed! But, who knows...maybe you'll get lucky! JMHO! dave
I agree. I don’t mind tearing most my guns to bits but I have watched Tim work on 600’s and I know my limits. I have seen him go through his parts bin of used parts to mix and match until he gets the right combo for the cam to run on guns that were headed for the trash.
I hope it comes together for you. I well running 600 is a fun thing to have.
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The reason your having problem with the 600-81 (.186) and 600-36 (.163) pins is they are to different OD and they each go in the matching hole. If you look closer at the holes in the 600-67 tube/valve body. The pin hole next to the exhaust hole should be the smaller retainer hole for the 600-36 retainer pin. When you put the tube 600-67 with the valve back in the main frame the exhaust hole points straight up. The other hole is the bigger hole for the 600-81 retainer pin. All so use a 140-057 quad ring instead of 166-032 o ring. I have rebuilt 30-35 of these and have the parts to measure the difference. The 2 pins and back valve body would have been $28.50 shipped.
email me if you have more questions. (peter_built78@hotmail.com)
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I would not recommend everyone do their own Crosman 600 reseal but I did not find it to be so bad myself. The fearmongering by most that I have seen I believe is done to generate business for them or someone they want to help out (pure speculation).
I don't know the OP and if his mechanical aptitude is up to it or not, but I respect that he was not afraid to try.
I have mechanical ability and have fix many things in my life time so I have the confidence that I have not failed at anything except a watch because the small parts were too hard for me to deal with without the proper tools. I really don't enjoy working on tiny things that have watch sized parts, if I did I would get good at it.
I would recommend anyone that wants to fix their 600 research it well first, buy good parts, hope that someone has never messed it up ahead of you and that all the hard parts are still good. Pay attention and pics if you need memory aids as you go, take your time and enjoy it.
If you have a history of failures on mechanical things, just save up and pay someone that can do it to preserve another one. You are just a Custodian of this great piece of history, keep it nice for the next custodian in line IMO!
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Rick at Precision Pellet can repair your 600 at a reasonable price. I highly recommend him.
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I would not recommend everyone do their own Crosman 600 reseal but I did not find it to be so bad myself. The fearmongering by most that I have seen I believe is done to generate business for them or someone they want to help out (pure speculation).
I don't know the OP and if his mechanical aptitude is up to it or not, but I respect that he was not afraid to try.
I have mechanical ability and have fix many things in my life time so I have the confidence that I have not failed at anything except a watch because the small parts were too hard for me to deal with without the proper tools. I really don't enjoy working on tiny things that have watch sized parts, if I did I would get good at it.
I would recommend anyone that wants to fix their 600 research it well first, buy good parts, hope that someone has never messed it up ahead of you and that all the hard parts are still good. Pay attention and pics if you need memory aids as you go, take your time and enjoy it.
If you have a history of failures on mechanical things, just save up and pay someone that can do it to preserve another one. You are just a Custodian of this great piece of history, keep it nice for the next custodian in line IMO!
Dan, I would read through Garry's post again and see if you agree that he may or may not be up to the task. Nothing against Garry and hopefully he will finally get it sorted.
I remember taking a 38T to Mac-1 and he really didn't want to be bothered with it. I'm guessing it was the time involved would not be worth the value of the gun.
Well, I got the seal kit and set to work, took pictures, got the schematic and set to work. Two days later and several tries, got it working just fine. Hey, I had nothing to lose.
Worst case scenario, the gun would get scrapped. For something as valuable and intricate as a 600, I will gladly pay a pro 60 or 70 Dollars to do it right albeit Baker or Mac-1 or whoever. I just happen to be a half hour away from Tins shop in Signal Hill...and I've known him for 35 years and trust his work. As Clint said, " Man's got to know his limitations!"
Lord knows, I've learned THAT one the hard way! :( dave
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Hey Team, OP here! I really appreciate all the feed back and I apologize for not revisiting the posts timely. Just an update to my project. The 600 is doing great and shooting like new. It was a fun exercise and even with my mistakes, it was a LOT cheaper than sending off and now I know the gun inside out.. I had a couple of hiccups mainly just getting the retaining pins in and out of the tube to remove and reinstall the valve. If not for that, this gun was not all that difficult to reseal. If I can do it, anyone can ... L_M_A_O and just my opinion.
Anyway, thanks again for your responses. I have attached Crosman 600 section clipped from the Crosman factory manual for anyone that would like to dive in to their 600. Hope it helps...
Cheers
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A while back I should have bought one that I seen on Ebay because it grips on it that were left handed friendly and even the gun looked really nice too but I didn't try for it. It was a buy it now at a very reasonable price but that's been over a year ago now. Time sure does fly by fast.
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I rebuilt my father's right after I got back from the West Coast after 8 years in the Navy. LOL, shore duty was working in an HPA/hydraulic shop so it was all about cleanliness, lube, and fresh O-rings. Not hard- just gotta be meticulous. As a kid, I killed a few water moccasins with Crosman trashcans. When I bought my 1st house the following year, the 600 went into storage at my folk's house. they sold the house, moved the NC, and I've searched high and low to no avail. As much as I wanted that 600, I scored a Mark 1 a couple weeks back and cannot complain.
End game is a 150, my Mark 1, and a 600 and I'll have all the Crosman .22 CO2-powered happiness I could ask for!