Two four piece o-ring seal kits, consisting of four valve
seals and four bolt seals.
Two (2) check valve body, o-ring seals.
Two (2) rear valve body, o-ring seals.
Two (2) breech bolt, o-ring seals .177 cal. model 1377 (smallest).
Two (2) breech bolt, o-ring seals .22 cal. model 1322. (slightly larger).
Smaller one is for the 1377 and the larger one is for the 1322
Here are the seals needed to reseal the valve assembly and breech bolt/probe in your Crosman pistol. These will work for pistol models 1322 & 1377 and for rifle/pistol model 2289 (Backpacker). May work for other models as well. NOTE: These are intended mainly for the Models manufactured after 1977. Seals Included:
(Smaller one is for 1377 & 2289 Backpacker and the larger one is for 1322. Please Note: This kit includes the seals only. It does not include instructions, diagrams, exploded views or documents of any kind. Thank You.
Replacing the O-ring seals on a Crosman 1322 or 1377 air pistol involves disassembling the gun and carefully installing the new seals. Here’s a step-by-step guide to help you:
What You’ll Need:
A Crosman 1322 or 1377 O-ring seal kit (specific to your model).
Screwdrivers (preferably magnetic, Phillips, and flat-head).
Hex wrenches (if applicable).
Tweezers or a pick tool (to remove old O-rings).
Silicone grease or oil (for lubricating the seals).
Steps:
Safety First:
Ensure the air pistol is unloaded and depressurized. Pump the handle a few times and pull the trigger to release any residual pressure.
Disassembly:
Use a screwdriver to remove all screws holding the pistol frame together, starting with the grip and pump arm.
Carefully separate the halves of the frame to expose the internal components.
Access the Seals:
Locate the seals that need replacing. Common locations include:
Pump head O-ring: Found on the piston inside the pump tube.
Valve assembly O-rings: Inside the main valve body.
Bolt O-ring: Around the bolt where it slides into the barrel.
Remove Old Seals:
Gently pry off the old O-rings using a pick tool or tweezers. Take care not to scratch the surfaces.
Clean Components:
Wipe down all parts with a clean cloth to remove debris, dirt, or old lubricant. Check for scratches or damage on the surfaces where the seals sit.
Install New Seals:
Apply a thin layer of silicone grease or oil to each new O-ring.
Slide the O-rings into their respective grooves, ensuring a snug fit.
Reassemble the Valve Assembly:
If you’ve removed the valve body, carefully reinstall it with the new seals in place.
Align the components as they were during disassembly.
Reassemble the Pistol:
Reattach the frame halves, ensuring all internal parts are aligned properly.
Secure the screws, but do not overtighten them to avoid stripping the threads.
Test the Air Pistol:
Pump the handle and test for proper function. Listen for any air leaks, which could indicate a misaligned or improperly installed O-ring.
Final Inspection:
Ensure the pistol pumps and fires correctly without air leakage.
• • Store it safely with a light coat of oil on the metal components to prevent corrosion.
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