Benjamin Pump Rebuild

ztirffritz · Jun 16, 2015

Does anyone know of a Benjamin pump rebuild kit? My pump is almost brand new, but I have to use it in a very dusty environment. I'm sure that it can't be good for it and a rebuild will be in my future in not too long. I searched at Pyramyd, but didn't find anything for the pump. Surely someone is selling a kit for this. I haven't found anything online elsewhere either. Maybe I'm using the wrong search terms.

pheelgood · Jun 16, 2015

http://www.ebay.com/itm/Benjamin-Airforce-PCP-HPA-Hand-Pump-Rebuild-Reseal-Seal-O-Ring-Kit-/231215178827

KYAirgunner · Jun 16, 2015

Here is a link for an O-ring rebuild kit for it on Amazon.
http://www.amazon.com/Benjamin-Airforce-Rebuild-Reseal-O-Ring/dp/B00JYG3UXA

KYAirgunner · Jun 16, 2015

Wow pheelgood your fast

ztirffritz · Jun 16, 2015

Awesome. Thanks. Does anyone know what type of lube is used on the pump?

KYAirgunner · Jun 16, 2015

I've used white lithium grease on mine and it worked fine. The grease is made for moving parts and it's the same stuff I use on my 4500 psi compressor.

pheelgood · Jun 16, 2015

"KYAirgunner"Wow pheelgood your fast

I work from home so I have some "free time" at the computer LOL

John "spysir" Blount · Jun 16, 2015

Just grabbed off the Internet and gives the o-ring sizes

Sun Optics used to be the warranty center but they don't seem to list anything now? Have you tried Crosman to find out who now handles warranty/parts?
John

ztirffritz · Jun 16, 2015

I tried to send a message to Crossman, but their online form requires me to enter the part number that I'm asking about, and it doesn't list the pump at all. I think the Amazon link above looks fine. I'll just order that and wait for the inevitable. I think I also need to get a piece of cardboard, or maybe a carpet remnant to use the pump on. Everytime I open the bleed off valve it kicks up a cloud of dust. That can't be good for the pump, filter, seals...

The O-Rings need to be the correct durometer hardness in addition to being the correct size. Otherwise they'll fail prematurely. But at least this diagram will show which seals go where. Thanks.

CaptainBravo · Jun 16, 2015

ztirffritz, the best places I know of for O Rings in quantity is McMaster-Carr, and individually is theoringstore.com. For a filter, you can get one from Harbor Freight for $8, or a 2 pack from Amazon for $21.50 with free shipping. Then you would need a 1/8"MNPT to 1/4"FNPT fitting (local hardware is usually cheapest). Take out the factory "filter" in the base of the pump and put in the adapter and new filter/drier. Should make it last a lot longer for not a lot of money.

snakewolf · Jul 28, 2015

KIt can also be found at http://stores.ebay.com/Benjamin-Crosman-Oring-Kits?_rdc=1 has Kits for Benjamin, Crosman. Air Force Pump is same as Benjamin Pump

ztirffritz · Jul 28, 2015

"snakewolf"KIt can also be found at http://stores.ebay.com/Benjamin-Crosman-Oring-Kits?_rdc=1 has Kits for Benjamin, Crosman. Air Force Pump is same as Benjamin Pump

Thanks! I ordered their Marauder o-ring kit and their pump kit. Perfect.

RidinLou · Jul 29, 2015

My Disco pump is relatively new and I try to pump slowly so what am I looking at in trouble free operations, either number of fills or months of ownership.

Most of the time it will be used in the controlled atmosphere in a house house.

ztirffritz · Jul 29, 2015

I'd imagine it should last a long time in that environment. I'm pumping in fine dust so the pumps days are numbered.

billydjann · Jul 30, 2015

I ordered my o-rings off from orings.com
Much much cheaper to rebuild gun.... just seach by dash number and order sizes needed...
You will not believe how cheap orings really are...

Makes it so nice to just rebuild and not worry about it cost for rebuild kit.. when you can rebuild for much much less...
People selling these kits are making a killing.....

b44mullins · Sep 27, 2019

I over tighten my bleed valve and punctured the plastic piece inside the base. I can still fill my kral PB but can no longer fill my air Force Talon SS. Any info where I could get a replacement plastic piece?

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Benjamin Pump Rebuild

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