Author Topic: Crosman 766 (Read 2685 times)

alhankins · « **on:** December 18, 2005, 03:12:28 PM »

I have a crosman 766 10 pump I believe the seals are bad. It worked fine until I oiled it and then it started leaking air out of the barrel while it was being pumped. Does this sound like the seals? If so where can I get the seals and a diagram of how to get the old out and the new in? I have tried and cannot figure it out and dont want to break anything. thanks, andy

ironfist · « **Reply #1 on:** December 27, 2005, 06:53:12 PM »

Call Crosman at 1-800-724-7486 they are normally very helpful and may send you the diagram after which you can order the seals.
Or else do a yahoo search for Crosman airgun forum (new) there are a lot of tips on how to fix your rifle, in fact you can ask someone to help you fix it.

Regards,

Ironfist

sixgunSal · « **Reply #2 on:** January 05, 2006, 03:36:56 AM »

Andy, how did it work out with your 766? Did you end up taking it apart and fixing it?

alhankins · « **Reply #3 on:** January 05, 2006, 03:49:32 AM »

I still have not been able to get it totally broken down. I cant get the piston out. I dont know if that is the right part name, but its the piece that moves when you pump the stock. I am trying to get a diagram of the gun so that I dont break or disassemble it wrong. If you can help I would really appreciate it. thanks

ironfist · « **Reply #4 on:** January 07, 2006, 12:51:47 AM »

If this is somewhat like the 2100 then you need to take a look at the place where the pump arm fits. I think it has a pin holding the assembly in. You can take the pin out by hammering it out with a nail or a proper punch pin. Then your whole assembly should come out if you pull the pump handle slowly. Please check if there is a pin at the forend of the air tube. My term for the tube under the barrel. The check valve and all lie inside this tube just push it out with a wooden dowel. Don't use any oil near the check valve assembly unless it is Crosman Pellgun oil. The o-rings are very sensitive and will get worn out with the wrong oil in minutes. I hope you fins this helpful.

Regards,

Dev

wilded · « **Reply #5 on:** January 07, 2006, 01:33:05 PM »

Go to Crosmans website and request a manual. They will send you one.

sixgunSal · « **Reply #6 on:** January 14, 2006, 03:35:02 PM »

Go here --> http://www.crosman.com/2004/pdf/manuals/crosman/766/

Find out which variation you have - first one had a plastic barrel cover, 2nd one had a metal barrel cover, third one had a steel barrel. I think this is the 3 variations. But this page will give you all the breakdown diagrams.

sgS