Airwolf CDT question O-Ring size

Airwolf CDT question O-Ring size

Joined: August 24th, 2006, 5:49 pm

April 16th, 2017, 3:25 pm #1

My fill probe was leaking so I took it apart and saw that the small O-ring on the tiny piston broke.
Does anyone happen to know the type and size?

Also what's the oring size on the bolt?
Last edited by bigberk1979 on April 16th, 2017, 8:52 pm, edited 1 time in total.
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Joined: May 6th, 2013, 6:24 pm

April 16th, 2017, 6:04 pm #2

"Small print on the tiny piston'??
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Joined: December 20th, 2009, 2:43 am

April 16th, 2017, 7:28 pm #3

My fill probe was leaking so I took it apart and saw that the small O-ring on the tiny piston broke.
Does anyone happen to know the type and size?

Also what's the oring size on the bolt?
I have a Air Ranger with the same fill port that leaks on and off. What small print?

Pic please. I used a generic o ring from an o ring kit that just happened to fit. Don't know the size, sorry.
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Joined: July 11th, 2001, 6:08 pm

April 16th, 2017, 10:04 pm #4

My fill probe was leaking so I took it apart and saw that the small O-ring on the tiny piston broke.
Does anyone happen to know the type and size?

Also what's the oring size on the bolt?
http://www.airgunnation.com/topic/dayst ... or-owners/

Taken from the above referenced post:

"Please note that DayState uses both Imperial or Metric O-rings. For Imperial O-rings, either the British Standard dash number (BS-xxxx) or American Standard dash number (AS568-xxxx) will work.

Bolt O-rings (aka Pellet Probe): Air Ranger, Air Wolf, MK4, Huntsman, Regal – FAC:
.177: -003 Buna-N A90
.20: -004 Buna-N A90
.22: -004 Buna-N A90
.25: -005 Buna-N A90

Bolt O-rings (aka Pellet Probe): Air Ranger, Air Wolf, MK4, Huntsman, Regal – 12 ft/lbs:
.177: -003 Buna-N A70
.20: -004 Buna-N A70
.22: -004 Buna-N A70
.25: -005 Buna-N A70

Piston O-rings: (AR, AW, MK4, HM RGL):
–006 Urethane A90 "

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Videos of leak & repair:
Part 1 -https://www.youtube.com/watch?v=iEDBV-0VxZs
Part 2 -https://www.youtube.com/watch?v=41l7waPjEOY
Part 3 -https://www.youtube.com/watch?v=KFaOwv2BiXE (This vid states a size 006 oring in check valve)
Part 4 -https://www.youtube.com/watch?v=KDlon76NJ5Q (Dowdy Seal replacement)
Part 5 -https://www.youtube.com/watch?v=fPz6eOcG6kU
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fixed a similar leak in my FX Typhoon / Logun Solo. I used a size 006 oring to fix mine. Brother Tom used size 005 in his. Worked for us as long as the size is close enough.

Here is a link with some pics (not mine) showing the cone shaped part in an FX:
http://www.network54.com/Forum/79537/th ... +was+fixed

Tom's post:
http://www.network54.com/Forum/79537/message/1352663581
Last edited by Diamondback on April 16th, 2017, 11:02 pm, edited 1 time in total.
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Joined: August 16th, 2013, 7:21 pm

April 17th, 2017, 5:45 pm #5

My fill probe was leaking so I took it apart and saw that the small O-ring on the tiny piston broke.
Does anyone happen to know the type and size?

Also what's the oring size on the bolt?
as for the bolt you need to tell us what callleber please

.117 Buna-N 003
.20 Buna-N 004
.22 Buna-N 004
.25 Buna-N 005

I would use the A-90s if you can get them over the bolt probe
but the 70 durometer work well also . Good luck .
Last edited by D-RIG on April 17th, 2017, 5:46 pm, edited 1 time in total.
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