Crossman 766 Repair Manual
Hot off the press, check out these Gearbest Summer Sales for great deals!: & Cyber Sales - LED Lights and Flashlights - Outdoor Sports Equipment - After getting your gun working, I recommend putting a scope on it, it makes it that much more fun. Check out this affordable scope that comes with 11mm scope mounts: In this video, I show you how I fix my 18(Purchased 1993) year old pumpmaster 760. A lot of people have these old guns laying around, and they most likely do not pump very well, if at all. Most likely, the rubber o-ring and one rubber pump cup are old and need replacing. VIDEO SHOWING HOW TO REMOVE THE PIN: The part numbers for the 760 Pump Master are: O-Ring(130-035) and Pump Cup(760-140).
If you have the 761XL(1972-1981), they look like: O-Ring(760-009) and Pump Cup(760-042), but double check the parts diagram located here: In my case, I modified the existing materials to work again, but I would suggest that most people just replace existing with new. The gun itself is only worth $30, so I figured why spend $15 on parts?
The gun works like new, except the pump is a little loose and doesn't hold itself in, other than that, it shoots with as much muzzle velocity as day 1. Hope this video helps many out there revive life into their old 760's! RESOURCES(760 Pumpmaster): Manuals listed here: Hope you enjoy my channel, please support it by using my affiliate link above, it's much appreciated!
Finding your old Crosman 766 BB gun while cleaning out the hall closet or garage can bring back childhood memories of time spent plinking away at tin cans with your dad or grandpa. Before you share the same memories with your own child or grandkid, your Crosman will probably need a bit of TLC to get it back to prime condition. If it can’t hold pressure, it’s likely that it needs new seals.
Crosman 766 Manual
Crosman Factory Service Manual for All. - stevespages.com. Crosman 766 Factory Service Manual Crosman offers a network of officially certified Service Centers with technicians who specialize in current and out-of-production.
Crosman 766 Repair
Resealing your airgun can be a little technical, but with a few tools and the right parts, you can get your well-worn gun working as well as the day you bought it. Diagnosis Some of the seals in your 766 are easier to replace than others, so it's important to figure out which seal is the problem. If your airgun is unable to pump enough air to fire at all, its pump cup usually needs replacement.
If your airgun can pump up but loses pressure, the valve seal is the issue. Getting Started Before disassembling your airgun, gather all the parts and tools needed to complete the job.
Although the Crosman 766 was discontinued in the mid-80s, it's still possible to find aftermarket parts kits to repair it. Crosman no longer sells replacement parts for the 766 directly, but the airgun shares many parts with the 2100 model, which can still be acquired directly from Crosman. To disassemble your 766 enough to get to the seals, you'll need a flathead screwdriver, a mallet, a thin wooden dowel and a 7/32-inch roll pin punch. The Disassembly Before proceeding, make sure your 766 is unloaded by removing the BBs from the reservoir. Audio driver for xp. Pump up and discharge it in a safe direction to release any pressurization.
Once you're sure that the airgun is unloaded and not pressurized, remove the plastic housing from the front of the handguard with your flathead screwdriver. Lift the plastic cover to expose a roll pin that must be removed with your 7/32 roll pin punch and mallet. Take out the plastic plug that it was holding in place, and you'll be able to remove the air piston assembly. The pump cup is at the very end of the air piston assembly and, because it is friction fit, can be pulled out by hand. Replacing the Seal To access the valve seal, you'll need to open the receiver by unscrewing the three screws on the side of the airgun. Proceed with caution; there are many small parts and springs in the receiver that could be easily lost.
Fully disassemble the receiver and retain all parts for reassembly. With the receiver disassembled, you can remove the pump tube, which contains the pressure chamber of the airgun. Gently remove the pressure chamber from the pump tube with your wooden dowel and disassemble it to reveal the valve seal O-rings. After replacing the broken seals, reassemble your 766, retracing the steps you took to take it apart.