Benjamin Marauder rebuild kit?

Crosman is very easy and friendly every time I have called and ordered parts. And relatively inexpensive. Most O-rings can be easily purchased from a variety of sources including home stores and hardware stores or places like McMaster or the O-Ring Store on line.



If you need a new exhaust valve poppet then I would just call Crosman for that. But there are several places you can purchase from:


And there are others but these three I have purchased from.
 
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Thank you for that list, will use it next time.

I probably over paid for the "kit" I bought but that happens when I am lazy.

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The kits from AGR are very nice and high quality. He is a good guy. I have two of his hammer kits and a his hybrid tube. He is a wealth of information as well.

If and when ordering from Crosman, have all of your Crosman part numbers from the Owner Manual. Call them up, list out the parts and how many of each. They mostly get it right ;) and are super nice. And in a few days your bits and pieces come along via USPS. Could not be easier.
 
+1 on Crosman for small parts but they only take orders over the phone and several times I've just paid a few bucks more to order a complete kit online from a reputable dealer.
Be aware that old Benjamins are a bit trickier to rebuild than old Crosmans.
And I always try an alcohol flush or ATF fluid before I go tearing in to anything. I've had quite a few come back to life, some just for a few months, some still pumping away. The original factory parts are very good quality.
 
I did a better job documenting the steps rebuilding my 392 https://www.thehighroad.org/index.php?threads/benjamin-franklin-rebuild.740397/ and its a bit more difficult because of the threads and tool required.

The Mrod guts are in the first photo. Those O-rings and a little one under the gauge and where the "upper" joins the lower. I lubed them all with the grease (silicone) they came with.

I used a piece of broom handle to remove and install the parts from the tube and shove a micro fiber towel through before I put them back.
 
The gauge hole is notorious for cutting the exhaust valve O-ring during reassembly. I use a deburring knife on the inside of the hole to remove the sharp corner. For the broom stick or wooden dowel, I drill a relief hole in the end that goes against the valve to allow the valve stem to set inside so as not to bend or damage the valve stem and poppet. I have since gone to a piece of PVC pipe.
 
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Ok, I kind of messed up, I should have done a step by step and included what I learned.

I too noticed the O-ring looked like it was going to be cut and used a popsicle stick to push it down as it went past.

Then I noticed, after I was done, that the bag still had a bunch of other stuff in it. Enough O-rings for next time and this little black thing, where does that go?

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Man, something exactly like that would have been perfect to saddle the tank and fill in that gauge hole, so the o-ring would slide right past.... :)
 
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