Page 11 - Benjamin Hand Pump, Fits Crosman Reviews

Cheapest PCP pump. Easy to use. So far, working great.

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Read about reliability problems. Pump slowly all the way up, all the way down, and let it cool 5 min every 100 pumps or so. Working perfectly after about 100 uses so far.

Came with Discovery, fairly easy to take apart and fix.

Better hardware, stainless seems more appropriate with these high pressures. Hex heads instead of phillips. Use a good silicon grease. Include assembly diagrams, and sizes of o-rings. Assemble less tightly.

Worked for a few months, then became hard to pump. So i decided to fix it myself. I found a forum post that had pictures of the dissassembly (actually was a slightly different version). The lube had become gunky and part of the outer shaft had a rust spot, sanded that out, relubed with a lithium grease (bad idea, gummed up very quick). After reading more about pumps i rebuilt it again, this time replacing o-rings, the smaller sizes with viton o-rings. and lubed with high grade silicon grease, from a diver's supply. Also i tightened everything hand tight, the o-rings do the sealing, so there's no need to crank down on anything. Since rebuild, it pumps and seems to do a good job. I fill a Discovery and a pistol Marauder, which arent too demanding, but it does ok. Plan on rebuilding it, and maintaining it after. That said, I intend on getting a Hill pump, they designed it to be easy to service, and many people say its the best.

Works pretty good.

The hose is way to short.

Works pretty good. Gets very difficult to pump after about 27-2800 psi. They could have doubled the length of the hose and that would have suited me a little better. Have to lay the rifle on the floor in order to pump it up. the hose could have easily been 40-48 inches long and that would have been more convenient. Double check the quick connect before attempting to fill the rifle, by pulling on it gingerly. Mine popped off once scratching the barrel. Never ever had any problem with any other quick connect before.

Solid built, works well & simple design.

Definitely a longer filler hose.

Works great with my Benjamin Marauder .22 caliber rifle. I have owned it for 3 years and it works just as good as it did on the day I took it out of the box. Has a bleed valve after you've reached your desired air pressure. Gauge works great. It's very sturdy. All in all, a must have ! I'm very pleased with this product and recomment it to all !

Also works with other Benjamin and Crosman rifles and pistols. It's best to store it in a dry place, as moisture is never a good thing for ay kind of metal products, and the same goes for this and other pumps !

High quality material all over! Comfortable grips makes it easy to operate. Solid stand prevents it from falling over. I fill my Marauder in 90 - 100 strokes which I find acceptable.

Longer air hose.. I dislike having to put my gun on the floor in order to fill the reservoir..

You can use this pump for a number of different PCP gun brands. No need to change the hose, just buy quick coupler plugs (for pressure up to 3000 psi or more) that fits your gun and the Benjamin pump Foster connection.

Solid build, easy of use, function.

Longer hose.

I'm happy with the purchase. Wish the air hose was longer to allow flexibility in where the rifle/pistol is placed during pumping. Otherwise, worked as described. Took about five minutes of steady pumping to fill my Marauder.

Works well

Would be nice if the line where longer so you could leave the gun sitting upright on the bipod but its no big deal. Just have to lay it on its side.

Lower cost. When it is working, it seems to do a decent job.

Make it reliable. I have had this pump a little over a year. This pump lasted a few months from the factory and I have been struggling with it ever since. The final stage o-rings go out like clockwork. I seem to get between 6 and 20 charges on a Discovery out of a set of o-rings. The manufacturer is Sun Optics. Duane at Sun Optics seems to want to make good on the product but has yet to be successful. He has replaced the inner tube, provided a desicant filter, and sent me countless o-ring kits. I can practically rebuild the pump in my sleep at this point. Duane is supposedly working on a new carbon fiber o-ring to improve reliability. I believe there is a basic design flaw or manufacturing tolerance problem with this pump. Turn-around time from Sun Optics on replacement parts is generally a week or two during which time you are dead in the water with respect to shooting your rifle.

If you like wasting money or if you enjoy rebuilding pumps more than shooting then get this pump. Otherwise, I would try the Hill Pump or one of the tank set-ups. I believe the Airforce pump is also manufactured by Sun Optics so beware. Google Sun Optics if you want to see lots of other complaints from people with similar problems. I'm really surprised the average rating on this pump is so high.

It works good construction

Longer hose, you have to lay the gun on its side on the ground to fill. I have a 6" bi-pod and the hose wont reach that high

This is a workout if you plan on shooting over 50 shots at a time you might want to consider the scuba tank, I will be getting one in addition to the hand pump. Personnaly you need both.

Definitely a high quality American made product. First thing I noticed it is HEAVY it's all steel and definitly built for very high pressure work. Excellent design. I never saw a pump with built in heat sinks before and when compared to a chinese made pump you can see which one was built right.

Definitely a pump that will last.

Quality

Add an air dryer

The pump will need maintenance. You will need to change orings. My pump stopped working (vacuum issue)after about 400 shots (about 15 refills from 1600 psi to 2800 psi.) I had to replace 1 oring and was back up and running. This is the first high pressure hand pump I have owned so I don't know if this is normal. I had hoped to get a longer life before repair, but the repair was not difficult. Make sure you have assembly/disassembly instructions before beginning any repair.

The pump failed in less than a week so there isn't anything I can say positive about it.

The pump seems to create black gue after use. I'm not sure what causes it but whatever causes it that's what I would change.

I bought this pump for my Marauder .25. The pump failed in less than a week. I do not know what the specific problem is with it but I am very unsatisfied. I am going to exchange it for a Hill pump.

it works

make the foot platform go up over and around the pressure chamber, to protect the user in case of catastrophic failure.

cancel your gym membership.

Solid feel & pressure gauge.

Wider base & longer hose.

Easy to refill my Mrod from 1900 psi to 2900psi in 25-30 pumps.

Good value for the money. Well made. I'm satisfied with this pump.

Maybe a longer hose.

I have two scuba tanks both hydroed and filled to 3100 lbs. I've never used them. I prefer to pump for the excercise. My Bengy pump services three Marauders. Since I bought it about six months ago I've had no problems. Pump five minutes, slow and deliberately. Rest twenty minutes between sessions. It takes a while if you are filling from empty. If you are just topping off its no big deal. Especially if its a P-rod.

It would pump my Marauder to 2900 just fine.

Wider base, bigger handles. Easier storage. Failed after 3 months of use. Can no longer lift the handles. Feels like there is an intense suction.

The apparent failure rate on this item is not good at all. Would buy a hill or an airforce next time.

This pump works well. While I know these things are not cheap, this pump is fairly well made and has a nice bleeder valve. You will obtain large muscles from using this thing for sure! In my opinion, a hand pump is a must have for PCP rifles, even if you own a tank. With a rifle like the Marauder, this pump will take you from around 1800 psi to 2800 psi in around 85 to 90 pumps. You will need to take break when you are done!

With time, I feel the price on these hand pumps, along with other manufactures will likely fall a bit. This would be a much better price point in the 129.00 range as opposed to 179.00. Even still, despite many reviews, this pump is fairly well made.

You will want to avoid over use of this pump by letting it get too warm. I you take very large shot strings and deplete the pressure in your rifle too much, you might want to fill part way, take a break to let the pump shaft and mechanism cool, and then start again. The goal would be to avoid placing heated air which will condensate within your air reservoir.

Works ...so far... for loading my Marauder rifle to 2900psi, but I've only had it a couple weeks.

Seems awfully expensive for a hand pump. Also I think a longer hose would be nicer

Gets pretty difficult at higher PSI. I literally have to put most my weight on it after 2500psi or so...and I weigh ~200lb. I've only had it a couple weeks, have only filled my Marauder a dozen or so times, and already this pump has a slight leak/hiss sound coming from the top near the handle when it gets to 2500psi+, must be a seal going out already. I can't imagine it will last long at all.

solid construction and build quality.

a larger base for more stability during pumping operation.

be prepared for a work out the first time you charge your PSP system to its max capacity.