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2K5: Leak Down Barrel

Gun has an air leak down the barrel. Check the items below and reference the manual as needed.

Air Pressures:
  • Zero out your HPR and LPR regs, then listen for any leaks. Regs are zeroed out by turning the adjustment screw out till it's flush with the bottom/outside of the reg. If there are no leaks, use the following steps for the HPR and LPR.

    • HPR: Slowly increase your HPR (turn inwards) pressure. If it starts leaking, use the steps below to check your cup seal and Ram Sleeve o-rings.

    • LPR: Slowly increase your LPR between 70-80psi. If it starts leaking, replace the poppet o-ring and front ram o-ring as described below.

  • Remove your bolt and confirm the hole is facing down. While you have the bolt out, inspect the o-rings for damage and replace if needed. Lube with a drop of Tri-Flow oil on each.

    • #18 - Bolt o-rings:  015 (x4)

  • With the bolt out, remove the Ram Cap and the Ram. Inspect the the Ram cap o-ring as well as the front and rear Ram o-rings for damage and replace if needed. Lube with a small amount of Dow55. Do not lubricate the Ram itself. 

    • #65 - Ram:

      • #64 - Ram Front o-ring:  006

      • #6 - Ram Rear o-ring (large - towards ram cap):  011

      • #66 - Ram Rear Bumper o-ring (small - towards ram cap):  006 (Teflon)

    • #67 - Ram Cap:

      • #6 - Ram Cap o-rings:  011

  • Carefully remove the Poppet (Ref the video below for assistance) with a small pair of pliers and inspect the poppet o-ring for damage and replace if needed. Lube with Dow55. With the poppet out, inspect the cup seal for anything that would cause it not to seal properly such as nicks, scratches, etc. If damage is found, replace your poppet. Be careful not to damage the o-ring or cup seal when re-installing.

    • #60 - Poppet Shaft:

      • #61 - Poppet Shaft o-ring:  004

Ram Sleeve:
  • With the trigger frame removed, access the bottom of your marker. Remove the following items from the Ram Sleeve: Front and rear air barbs, fiber washers at the base of the air barbs and the retaining screw. Once removed, caefully slide out the Ram Sleeve and inspect the o-rings for damage. Replace the o-rings if needed and lube with Dow55. Be careful not to damage the o-rings when re-installing.

    • #63 - Ram Sleeve

      • #62 - Front Ram Sleeve o-ring:  015 (u-Cup)

      • #18 - Ram bumper o-ring:  015

Ram sleeve and poppet.jpg
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