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Author Topic: Benjamin 392 Soooo Easy to work on  (Read 567 times - 1 votes) 
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Offline PasadenaMike

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Benjamin 392 Soooo Easy to work on
« on: October 30, 2021, 12:40:51 PM »
After messing with my pcps I got a 392. Guess What it was Leaking from new in the box. I decided to open it up and realized you can have it apart with your eyes closed and a multi tool if you had to. I cleaned up the valve and the problem was solved and learned how to work on one. I was curious for years how those went together turns out they can be fixed in the field without any issues.
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Offline JoninMA

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Re: Benjamin 392 Soooo Easy to work on
« Reply #1 on: October 30, 2021, 02:17:12 PM »
Agreed, they're extremely easy to work on. Ive had my 392 over 15 years, about 7 ago it developed a leak. Opened it up and it had some brass shavings from manufacturing stuck in the valve. Just gave it a cleaning, put it back together, haven't had a problem since.
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Offline PasadenaMike

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Re: Benjamin 392 Soooo Easy to work on
« Reply #2 on: October 30, 2021, 04:00:14 PM »
Iíd say this is the ultimate survival gun
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Offline LAalex

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Re: Benjamin 392 Soooo Easy to work on
« Reply #3 on: November 15, 2021, 09:22:31 PM »
Mike, is it a good shooter?
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Offline PasadenaMike

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Re: Benjamin 392 Soooo Easy to work on
« Reply #4 on: November 15, 2021, 09:53:52 PM »
Mike, is it a good shooter?

I havenít shot it much yet Iíve been focused on some troublesome PCPs but hopefully soon itíll get some attention. All itís going to get are CPHPs thatís it
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Offline avator

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Re: Benjamin 392 Soooo Easy to work on
« Reply #5 on: November 16, 2021, 07:01:40 AM »
Moved to Crosman/Benjamin gate.
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Offline Hoosier Daddy

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Re: Benjamin 392 Soooo Easy to work on
« Reply #6 on: November 16, 2021, 08:57:31 PM »
Because you say NIB.... I assume it is a cartridge valve model.
The early 392P with the soldered valve requires a special tool and a clean environment. (bench).
 ;)
I don't need THERAPY.. I just need to shoot an AIRGUN.

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Offline PasadenaMike

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Re: Benjamin 392 Soooo Easy to work on
« Reply #7 on: November 16, 2021, 09:23:16 PM »
Because you say NIB.... I assume it is a cartridge valve model.
The early 392P with the soldered valve requires a special tool and a clean environment. (bench).
 ;)

Itís just as basic cartridge valve
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Offline WECSOG

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Re: Benjamin 392 Soooo Easy to work on
« Reply #8 on: November 25, 2021, 12:04:46 PM »
Iíd say this is the ultimate survival gun
Agreed!
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Offline Spacebus

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Re: Benjamin 392 Soooo Easy to work on
« Reply #9 on: November 25, 2021, 01:55:13 PM »
This is a slight threadjack.

How much power are these current production 392s capable of with the Mac 1 treatment, pump linkage, etc.? I'm looking at a 20 grain .22 mold, so hoping it could work with that.

Is the Mac 1 kit easy to DIY and make max power, or does it really need to go to the source?
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Offline avator

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Re: Benjamin 392 Soooo Easy to work on
« Reply #10 on: November 26, 2021, 06:49:19 AM »
I reckon if you have the tools, materials and knowledge you can do just about whatever you want.
Folks have been modding and improving in their home shops for years.
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Offline longhunter

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Re: Benjamin 392 Soooo Easy to work on
« Reply #11 on: November 26, 2021, 11:07:09 AM »
One thing that needs to be mentioned, when reassembling the cartridge style guns. The stud that screws into the valve, and doubles as the nut for the stock screw, should only be " finger tight, plus 1/4 turn ". ( quote from Rick at Precision Pellet)
 Any tighter, and you stand the risk of stripping the treads in the valve, because the stud bottoms out, in the valve, before it runs out of usable threads.
I believe it was purposely designed this way, to keep from pulling the valve too far to one side, and deforming the o-rings, thereby causing a leak.
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Re: Benjamin 392 Soooo Easy to work on
« Reply #12 on: November 27, 2021, 08:09:32 AM »
I found this out the hard way. I didn't strip threads but I did cause a leak by deforming the oring.
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