Have a Sheridan that requires the bolt to be manually operated to cock in order to pump it up. A while back, the gun would occasionally discharge during pumping so I started putting on the safety before I pumped. Now when I pull the bolt back, it does not cock. The bolt operates freely. Any ideas how to fix it?
Sheridan Sheridan will not cock
- Thread starter JDR
- Start date
Can you remove the cam plate and post a photo of the lug screw?
You could also have a problem with the exhaust valve spring. A weak spring will not allow the valve to close and retain air.
You might be headed in this direction; https://www.airgunnation.com/threads/help-with-my-childhood-sheridan.1325731/
You could also have a problem with the exhaust valve spring. A weak spring will not allow the valve to close and retain air.
You might be headed in this direction; https://www.airgunnation.com/threads/help-with-my-childhood-sheridan.1325731/
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Does it leak if you don't cock the bolt prior to pumping.
A pumper can shoot without discharging the trigger.
If you load up a pellet while it's leaking and pump air behind the pellet, it will build until it overcomes the friction holding the pellet in the barrel ,at which time pellet will launch without ever firing the gun.
That has happed to me twice with two completely different guns.
There no obstruction that I know off that would prevent the bolt from cocking?
I hope this helps.
A pumper can shoot without discharging the trigger.
If you load up a pellet while it's leaking and pump air behind the pellet, it will build until it overcomes the friction holding the pellet in the barrel ,at which time pellet will launch without ever firing the gun.
That has happed to me twice with two completely different guns.
There no obstruction that I know off that would prevent the bolt from cocking?
I hope this helps.
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If you pull the stock, the safety action and sear engagement with the hammer are clearly visible. Try cocking the gun. If the problem is with the safety function, the problem should be obvious. If the hammer doesn't move back far enough to allow the sear to engage, the problem could be that the spring powered tensioning ball is missing from the bolt, the bolt was installed with just the spring and the spring is jamming the bolt. Its possible the cocking lug on the bolt that engages the hammer is badly worn or damaged and doesn't push the hammer back far enough. If the sear engages the hammer but doesn't hold, the sear hammer and/or trigger spring could be worn or defective. It's also possible that the gun is fouled with dirt and needs to be disassembled and cleaned out.
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I took off the stock but could not tell anything. Afraid to disassemble further. Going to send it to Mike Baker. His quotation looked reasonable. Thanks for the replies.
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Some Sheridans with the push/pull safeties can't be cocked with the safety engaged. You have to cock them while safety lever is in the fire position(forward), after which they can be put on safe (rearward position.) That still doesn't explain the occasional accidental discharge though, unless the hammer is pressing on the valve stem holding it open, you load a pellet and then pump. That will blow the pellet out. I've had Crosman 101's, that need to be cocked first, do that.
Maybe try the following.
1. Cock gun
2. engage safety
3. pump
4. load pellet
Maybe try the following.
1. Cock gun
2. engage safety
3. pump
4. load pellet
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Hopefully JDR will ask Mike what the problem and resulting repair was and post that info here so we will all know.
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Mike said probably $50 plus shipping. This looks to be considerable cheaper than sending it to the other Baker which I have done in the past. He even recommended several other repair places closer to me. Many thanks to this forum for recommending him in prior posts. I always thought it was the same Baker.
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Sent the Sheridan to Mike Baker. After several days of working on it on and off, he called me and advised it was not worth fixing. Mike said the gun has several non-standard gun parts, including Benjamin plus other things that must be fixed. He rattled off a half-dozen things wrong with the gun. What I can remember is something in the air chamber was stripped, the bolt was from a Benjamin, the stock screw was non standard and several other things. I can see why the gun sometimes misfired when cocking and the bolt was extremely loose. Mike said he had $75 repair cost in the gun so far but said fixing all the problems would be too expensive compared to the worth of the gun. He offered to send me a fully functional Sheridan Blue Streak in exchange for the $75 repair cost plus just $19 shipping cost. I paid $70 to ship it to him by Pirate Ship. Unbelievable. The gun he sent me is beautiful and shoots great. Mike is honest and talented as the day is long.
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X2. Bought a 397 from Mike that he had rebuilt. Great gun at a fair price. Going to be sending him a 78G to reseal. Mike's great to work with, glad it worked out.
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