Crosman Air Pistol Owners Forum

Crosman air pistol - General => Crosman air pistol - General discussion => Topic started by: Jimbo on April 02, 2018, 01:45:19 AM

Title: old 1377
Post by: Jimbo on April 02, 2018, 01:45:19 AM
My brother just gave me an old air pistol that he's had for years and hasn't messed with it in a long time. It's a model 1377 .177 cal. and it doesn't have a bolt handle but it has a sliding sleeve that has a slotted screw that goes into the bolt probe. It says American Classic on it. It doesn't work at all and the pumping arm is just floatin in the breeze. He had put an extended plastic stock on it to make it like a carbine  but it's cracked where the screws tighten it done. I'm debating whether I wanna mess around with it or not. I certainly don't like that sliding sleeve. I'm wondering what year it was made and what I should do with it. Any suggestions or help would be just great!
Title: Re: old 1377
Post by: Multigunner on April 02, 2018, 07:32:01 AM
You can convert these to bolt action. it requires a replacement receiver and bolt.

If the pump arm is not worn out or damaged the gun may be resealed.

Parts aren't that expensive.

If the basic parts are all there and not damaged these can be modded into very nice custom guns.
Title: Re: old 1377
Post by: CraigH on April 02, 2018, 01:36:34 PM
There are three variations of the 1377 (non "C" versions).

Basically:

- steel breech, sliding cover, rear cocking, magnet to hold BB's to the bolt
- plastic breech, sliding cover, rear cocking, magnet to hold BB's to the bolt
- plastic breech, sliding cover, rear cocking, no magnet to hold BB's - pellets only

Not sure that the current Crosman steel breech and bolt kit will work on 1377's (non "C") - seem to recall there is a slight difference in the port location.     ???
Title: Re: old 1377
Post by: Jimbo on April 02, 2018, 02:31:35 PM
The serial # begins with 382 so that tells me it was made in March of 1982 correct?
Title: Re: old 1377
Post by: plasticclassic on April 02, 2018, 05:00:40 PM
     You have a classic on your hands. You should consider restoring it to working condition with some new Crosman parts, shine it up a little, and enjoy it as is.
      You probably need about ten dollars worth of parts (from Crosman) to have it back holding air and shooting again. I would say it needs a new pump cup seal, an inner and outer valve oring, a valve stem, and an oring for the bolt. Capof can walk you through the disassembly and reassembly process. There are some great YouTube videos for it also. If you want to replace the grips or stock, there are lots of options for that too, from 7 or 8 dollars and up. If you take the front grip screw off you will be able to see if it has a brass or an aluminum valve, for that age it should be brass, if so hang on to that valve, it's worth about 25 bucks because all of the newer ones have aluminum valves and the brass valve is more desirable because it doesn't corrode over time like the aluminum might.
     In my opinion it is just easier to start with a brand new one if you want to do a lot of modding on a 1377. They can be had for less than forty bucks on Amazon other places.
Title: Re: old 1377
Post by: plasticclassic on April 02, 2018, 05:15:41 PM
     Like the others have said you can also mod yours and end up with something nice.

https://www.crosman-air-pistol-owners-forum.com/board/index.php/topic,16976.15.html (https://www.crosman-air-pistol-owners-forum.com/board/index.php/topic,16976.15.html)
Title: Re: old 1377
Post by: Jimbo on April 02, 2018, 09:28:28 PM
I was able to find on line the parts diagram for it and I printed it off but I can't find a parts list( telling you what the parts are called). If I'm gonna order parts from Crosman I gotta put a part # to the name.
Title: Re: old 1377
Post by: plasticclassic on April 02, 2018, 09:58:25 PM
     Just to be sure, can someone help him with part numbers for this model year, I don't have one that early.
Title: Re: old 1377
Post by: BillK on April 02, 2018, 11:24:33 PM
https://support.crosman.com/hc/en-us/articles/203542970-1377-Owner-s-Manual-EVP-1981-1998-

Crosman has the info.
Title: Re: old 1377
Post by: Multigunner on April 03, 2018, 02:07:32 AM
JG Airguns has the original plastic replacement receivers for this model pretty cheap. If you receiver locking surface is worn, and most are to some extent, you should replace it while parts are still to be found.

Some earlier versions used a metal receiver.

Not sure about the problems with converting to bolt action. IIRC you must use a new style barrel to match the new style receiver, the old barrel doesn't fit. Not sure if theres any other problems.
A friend has one and I asked around long ago about such a conversion.

Many prefer the older rear cocking knob combined with a newer style bolt. I like the rear cocking knob feature of my SSP 250.

Some of the finest looking Crosman pistol carbines use the rear knob feature.

Restoring to original specs may be more your style though.

The older shoulder stock does not fit the newer pistols, theres an extra locator pin on the newer pistol frames that the older stock is not cut for. The newer stocks should fit the older frames.
Title: Re: old 1377
Post by: mudduck48 on April 03, 2018, 02:09:50 AM
Jimbo, if you want this gun fixed, send it to me and I will make it work again. All it will cost you is parts and shipping. :-*
Title: Re: old 1377
Post by: Jimbo on April 03, 2018, 02:49:21 AM
If I'm gonna do what I think I'm gonna do I'm gonna take my time and really research this good. I started on my 2260 awhile back and it was so intimidating at first but now I can take that sucker apart and put it back together in my sleep, thanks to all of you!
Title: Re: old 1377
Post by: rangerfredbob on April 03, 2018, 06:13:57 AM
The shoulder stock is like $11 from Crosman parts department, and if you want grip panels the marauder pistol or 1701 panels are nice and only like $3 a side...

If memory serves you need everything above the tube to swap from old to new, which includes:
-barrel
-breech (might include two parts, the top and bottom if sticking to the plastic breech, if not get all the parts for a steel breech or the breech kit in whatever caliber you want including bolt and bolt O ring, you can mix match those off of different models with steel breech like 2260 or Discovery/Maximus even with the plastic breech)
-transfer port

I think that should do it... if ordering from Crosman not a bad idea to buy a spare valve, it's like $7 for the assembly even if you just need the parts an assembly isn't bad...
Title: Re: old 1377
Post by: Jimbo on April 03, 2018, 05:22:07 PM
Would I be better off ordering parts from JG airguns or from crosman? As soon as I can find something that tells me the part # and the name of the part I think I'm just gonna order what I need to get it working again. When I went to print off the parts schematics for my marauder and my 2260 I got the parts list also. So On one page I saw the part # and the other page it said what that part was. For some reason I can only get the schematics sheet on this gun.
Title: Re: old 1377
Post by: mudduck48 on April 03, 2018, 07:54:01 PM
Here are the numbers to all the parts. Click on Parts Diagram.
https://support.crosman.com/hc/en-us/articles/203542970-1377-Owner-s-Manual-EVP-1981-1998-
Title: Re: old 1377
Post by: plasticclassic on April 03, 2018, 08:09:06 PM
As soon as I can find something that tells me the part # and the name of the part I think I'm just gonna order what I need to get it working again.

     Okay, here are the part numbers with description to reseal your 1377 as is. This doesn't include anything to modify or upgrade the 1377 from its original design.

1322A013     That is for a complete valve assembly, the whole valve, you can either use the valve as is and just swap it out for the one that's in yours now, or if you do have a brass valve and you want to use it instead of the aluminum one, you can take the parts out of this aluminum one that you're buying and shift those parts over to your brass one, either way it should hold air after that.

760-140     That part number is for a rubber pump cup that goes on the end of your piston so when you use the pump arm, air is pumped into the valve. You may have either a steel piston or a plastic piston, the part number for this pump cup is the same either way.

130-036     Breech gasket.

130-032     This part number is for the O ring that goes around the bolt, to seal the bolt to the breech after loading your pellet. It would be good to order a couple of these, because you have might have to replace occasionally, maybe say every year or so. If you keep this o-ring oiled a little with some Pelgun oil, it will last a long time. I think these O-rings are 1.10 each.

0241  That's the number for Pelgun oil that will keep your seals oiled and working.

     What do you want to do about the grips?
Title: Re: old 1377
Post by: plasticclassic on April 03, 2018, 08:21:48 PM
     You should watch this how to video that was made by one of our original members, it's very informative and it will show you how to disassemble and reassemble your 1377 and you will learn more about what each part is and how it functions.

https://youtu.be/aLSnFP1hSEU (https://youtu.be/aLSnFP1hSEU)

Title: Re: old 1377
Post by: Jimbo on April 03, 2018, 08:46:02 PM
I think I'd be fine with the factory grips and I've all ready printed off that schematic from Crosman but it just gives numbers not parts names. On my gun there's a part it looks like #130-030 that goes thru the tube and holds the barrel, tube and front sight all together, it is missing the retaining ring.
Title: Re: old 1377
Post by: rangerfredbob on April 03, 2018, 09:46:13 PM
That is the model he has, to update to a bolt probe you need the part numbers of a new one which is HERE (https://support.crosman.com/hc/en-us/articles/203542980-1377-Owner-s-Manual-EVP-1998-Present-)

They don't seem to have the table in the diagram anymore for some reason (I think that used to be on the price list portion, and so they could change prices they took that sheet off). As for who to order from, JG will most likely have everything you want but you will pay 4x as much for it and shipping will be higher. With Crosman small parts are $4 shipping and cheap, if you order a barrel (even a short one for some reason) they have changed to $11 shipping I believe.

Since it's lunch time and I have a couple minutes:
Barrel 1377-075 (.177) 1322-064 (.22)
valve assembly 1322A013
valve O ring 130-035
transfer port 1322A026
transfer port seal 130-036
plastic breech top part 1377-074
plastic breech bottom 1377-077
plastic breech bolt 1377A062 (.177) 1322-063 (.22)
small front breech screw 1322B027 (I'm not sure of the threads in your original tube, someone will have to chime in... modification or a tube change might be necessary)
bolt O ring 397-062 (.177) 970-028 (.22)
pump cup 760-140


It's been a while since I've ordered parts so I don't know current prices, I don't have the stock part number handy but I think it's 1399A01 or similar...
Title: Re: old 1377
Post by: plasticclassic on April 03, 2018, 10:07:24 PM
    Grips -

     I have heard that the original plastic checkered grips might n0 longer be available in brown from the Crosman parts department. Does anyone know for sure? As others have said in this thread there are other good options from other Crosman pistols. You can get the evps for all of those from Crosman, and it should be easy to find the part number for a grip on the schematic. If you have a particular one in mind someone can probably tell you the number.
Title: Re: old 1377
Post by: Jimbo on April 04, 2018, 08:22:49 PM
Well I didn't order parts yet but I did take it all apart and found out a few things. It does not have a rifled barrel and the tip of the bolt probe is magnetic. The transfer port has an "o" ring for the gasket where as my 2260 does not. I could not get the tp to push down into the "o" ring and stay, I just had to squeeze it between the tube and the barrel and then tighten down the breech screw. There is some kind of thick foamy type gasket on the piston arm that looks pretty worn, like I said the paper work that I printed off doesn't tell me what the name of these parts are. The pin that holds the cocking arm to the tube is missing a retaining clip so it comes out real easy. The diagram doesn't show a retaining clip but there is a definite spot for one on the pin. In my opinion the tp seemed worn and the plastic breech also. As far as the grips go if they are not available any longer couldn't I just order a set from a more current model?
Title: Re: old 1377
Post by: Jimbo on April 04, 2018, 10:31:25 PM
A little up date, I may be wrong about not having a rifled barrel but if it does I couldn't see it. And it does have a brass valve.
Title: Re: old 1377
Post by: Multigunner on April 06, 2018, 11:42:27 AM
Thousands of shots with steel BBs can wear out the shallow rifling over time.

On the other hand I've cleaned up what looked to be a smooth bore using a bristle brush and found rifling lurking underneath accumulated crud.
Title: Re: old 1377
Post by: Jimbo on April 06, 2018, 02:32:46 PM
You're probably right it is suppose to have a rifled barrel. Does anyone know the part # of that spongy gasket on the piston arm?
Title: Re: old 1377
Post by: rangerfredbob on April 06, 2018, 04:01:17 PM
Crosman stopped using that felt wiper in the 80's or 90's, so there is not a replacement... it's not 100% necessary, would be nice if they still used it but don't have that option...
Title: Re: old 1377
Post by: plasticclassic on April 06, 2018, 06:36:59 PM
You can get a good replacement for that oil wiper at the hardware/home improvement store. It is called a "felt Bonnet packing" and it's in the plumbing section, seems like it might be around the faucets and such. You need to get one that matches the outside diameter of your piston. Here is a picture of one but this isn't necessarily the right size. I'm just showing you a picture of what the package will kinda look like, they're about a dollar or so apiece when you buy them this way, they work well.

https://www.doitbest.com/products/453173 (https://www.doitbest.com/products/453173)
Title: Re: old 1377
Post by: Jimbo on April 06, 2018, 10:47:38 PM
Thanks , I'll run over to maynerds and pick one up I noticed the one in there now is oil soaked.
Title: Re: old 1377
Post by: Multigunner on April 07, 2018, 12:04:57 AM
You're probably right it is suppose to have a rifled barrel. Does anyone know the part # of that spongy gasket on the piston arm?

I just remembered seeing a list of Crosman pistols that listed a few normally rifled models that were also available in limited editions with smoothbore barrels.

If you were to decide to get a rifled barrel for this model I'm pretty sure that the recent model barrels do not fit when using the old style receiver. I could be wrong though.
Title: Re: old 1377
Post by: BillK on April 07, 2018, 01:43:51 AM
Crosman stopped using that felt wiper in the 80's or 90's, so there is not a replacement... it's not 100% necessary, would be nice if they still used it but don't have that option...

About half way down the page is an "oil wiper".  As mentioned, it is not necessary and may only prolong oiling.  It seems like a good option but, who knows.  I have used one  on a 130 and really don't see any difference between just looking at the Oring, when pumping, and seeing if it is wet (oiled) or dry.

http://www.airgunsmith.com/cros1377/cros1322-77cart.htm

Note:  AGS has very good parts and they charge accordingly.  Many/most of the Mellon Air parts are a great part & I use them with success & save a few $.
Title: Re: old 1377
Post by: Jimbo on April 14, 2018, 03:32:40 PM
My parts should be in today from Crosman. I ordered the two "o" rings for the brass valve that I have but I wanted to order all new inards for it too but the guy at Crosman said that they were [/youtube] available and that the aluminum one is different inside so I went ahead and ordered it too. I also ordered the pump cup and the bolt probe "o" ring. I have a couple of questions yet tho,the pin that holds the cocking arm on is grooved on one end for what I assume is a retaining ring which I don't have and without it the pin falls out very easily. Then I read somewhere that the transfer port goes big side down but for the life of me I can't see a difference both sides look the same to me and it seems to fit either way or am I missing something?
Title: Re: old 1377
Post by: plasticclassic on April 14, 2018, 05:31:50 PM
     Rebuild the brass valve you have with the innards of your new aluminum one from Crosman or just set the brass one aside for now altogether and use the aluminum valve.
      The part that holds the pump arm linkage is called a roll pin or pump pin, maybe yours has been changed over to a non stock part somewhere along the way, because I haven't ever heard of the type you are describing being on a stock pistol. Maybe you could put an oring or c-clip in the groove for now. They have some new pins on eBay, search Crosman roll pin or Crosman pump pin.
      The metal transport sleeve fits snug in the rubber o ring that sits on the valve through the tube when you go to reassamble. It only fits snug one way.
Title: Re: old 1377
Post by: Jimbo on April 15, 2018, 01:30:11 AM
Well my parts came in and all I did was switch out  the "o" ring on the bolt probe, put on the new pump cup, and replace the two "o" rings on the brass valve. The sucker is working like a champ. So I called my brother and told him that the ol 1377 was back in business and that I was headed to Cabelas to get some .177 pellets. He said stop by I got pellets for you and the owners manuel. I've now got all of the original paper work that came with the gun and it is pristine!
Title: Re: old 1377
Post by: mudduck48 on April 15, 2018, 03:35:50 AM
Well, good for you. Now you have something to shoot. 8)
Title: Re: old 1377
Post by: Jimbo on April 15, 2018, 03:56:52 PM
Two issues I do have tho, the little breech screw I think might be stripped, I don't dare tighten it any more and the safety is working backwards and is kinda loose. I think I may have put it back in wrong?
Title: Re: old 1377
Post by: Jimbo on April 17, 2018, 03:16:57 PM
I did figure out the safety, I looked how it was positioned in the schematics and finally realized that they were showing it positioned the wrong way, it's all good now. Man you sure gotta be careful with that little spring and ball bearing tho, they could easily be lost.
Title: Re: old 1377
Post by: Jimbo on April 25, 2018, 09:59:21 PM
I did put on black plastic grips from Crosman that fit and then I took off the forearm and painted it black to match, but now the forearm pins fall out after pumping it a few times.
Title: Re: old 1377
Post by: BillK on April 26, 2018, 03:42:03 AM
I got some pins for you. :)
Sent PM...
Title: Re: old 1377
Post by: 1377x on November 25, 2019, 03:20:21 PM
to switch to bolt action these are the parts needed
breech with old screw location steel , aluminum, brass, plastic your choice.
a new style barrel length optional. if going with a longer than stock barrel you can either free float the barrel ( no accuracy issues ) ream the stock barrel band or get an after market barrel band. caliber optional ( .177/ .22 ) and bolt to match stock, brass, aluminum, steel, extended probe or hollow probe
new style transfer port. if you have the transfer port with one long side and one short side then you will want to switch to the new style which is equal on both sides reducing or eliminating any leaks at that point.
another great option is a stainless steel slotted or Philips 4-48 screw. sure beats the heck out of the stock allen key screw.
I believe that covers converting the upper into the new style