Benjamin marauder 22

If it's leaking while just sitting there, it's the valve poppet not sealing.

Try filling with the gun cocked and safety on, if that doesn't help, then your poppet is probably broken. They're cheap, can order from Crosman for a few bucks.

-Matt

Same happened to Airacuda Max. Broken poppet. WM

You will have to degas and pull the gun down to change the poppet. Might as well put in all new seals. The entire valve assembly is pretty cheap though changing a poppet is nothing at all.

apslatton said:

Yea i watched a video earlier. Got the valve ordered and we have 2 whole cases of different size orings (my buddy is a mechanic) so I hope it's of the same ones. I think shipping and taxes cost more than the valve

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The M-Rod is about as easy as it gets. The gage cutout has a burr on the inside, it will cut the new O-ring seal on the valve and gage manifold if not careful. Best to deburr the inside with a hook deburring tool. Push the components from rear to front to remove and installing back in reverse. I use a piece of 1/2 inch PVC Schedule 40 pipe as a pusher.

You can get nearly all of the O-rings in the Harbor Freight kits or from Ace or even Home Depot:

apslatton said:

That'll cover most all of em from ben, fx, hatsan etc then? About to order some for sure.

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Those are Benjamin M-Rod part numbers from your owner manual cross referenced to standard O-ring numbers. I have no idea about FX or Hatsan.

You can also get Marauder specific kits all made up cheaply on eBay.

Marauder (.25) PL:



Marauder (.25) Exploded Diagram:



Should all be in the OM which if you do not have it can be downloaded from Crosman. I only have the .25 specific info because I have no interest in the .22 or .177 . Most of the parts are the same save for a few caliber specific items.

You can get similar kits for much less money at Harbor Freight.

One of the unique things about the M-Rod is that most likely 100 years from now you can go into Ace Hardware and get the O-rings you need. I doubt that will be true of FX.

Owner Manuals:

apslatton said:

Oh I don't have a manual but I got ya. I'm looking something with a wide range kit like this so maybe it would have a lot of the ones if I need on other guns ‍♂ I have sets similar to this but they were for sure not the right sizing/thickness
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VITON is the WRONG material .... you want BUNA and @ 70 duro hardness