Theoben leaks.

[Blackthunder]

My Theoben was leaking from the collet / ring (or whatever that part is called) that holds the quick-fill and pressure gauge. So I tried replacing the o-rings..........



I am having problems refitting the o-rings in the collet / ring that holds the quick-fill and pressure gauge on my Theoben Rapid 7 mkII. When placing the collet over the fast-flow, the edge of the fastflow wants to shave off some off the o-ring.

I tried tapping it in place with a plastic hammer; to no avail.



So, how does one fit this?



I believe that RAW guns have the same construction.



I know that this sounds kind of vague, but if you own one of these guns you might know what I am talking about.

 

[Gipper]

I have that setup on my Rapid as well. I have had mine off several times with no issues but was not replacing the o rings. I used a little silicon grease and rotated it back and forth when I slid it into place. Hope this helps.

Brian

 

[Motorhead]

take a small file and break the edge / or work the edge with some 400 wet/dry. CLEAN and then assemble w/o further shaving.

ALSO make sure you using the correct size o-rings !!

 

[Blackthunder]

@ Gubber, I used silicone grease as well. But the fast flow still shaved off pieces of o-ring.



@Motorhead, with ' take a small file and break the edge / or work the edge with some 400 wet/dry. CLEAN and then assemble w/o further shaving. ' you mean the o-ring, right?

Perhaps, I do not have the right size. But I did get these o-rings from a Theoben service kit.

 

[Motorhead]

@ Gubber, I used silicone grease as well. But the fast flow still shaved off pieces of o-ring.



@Motorhead, with ' take a small file and break the edge / or work the edge with some 400 wet/dry. CLEAN and then assemble w/o further shaving. ' you mean the o-ring, right?

Perhaps, I do not have the right size. But I did get these o-rings from a Theoben service kit.

No ... the edge of the metal part that is cutting the o-ring

 

[Blackthunder]

@ Gubber, I used silicone grease as well. But the fast flow still shaved off pieces of o-ring.



@Motorhead, with ' take a small file and break the edge / or work the edge with some 400 wet/dry. CLEAN and then assemble w/o further shaving. ' you mean the o-ring, right?

Perhaps, I do not have the right size. But I did get these o-rings from a Theoben service kit.

No ... the edge of the metal part that is cutting the o-ring

Ok thanks. I think it should work.



It does feel a little odd to take a file to such an expensive rifle though.



I wonder how they did it at the factory.

 

[Motorhead]

Correct size o-rings most likely & a bit of experience in the correct pressure and twist technique to get o-ring to climb onto where it needs to go withing getting damaged.

 

[Blackthunder]

Thank you for you replies.



My impression, is that Theoben must have used a tapered cylinder to get the o-rings in followed by the fastflow, that might even have been temporarily threaded onto the jig.



Anyway, I'll give it a try.

 

[WHITEFANG]

As mentioned just lightly work the edges. Plus proper oring and silicon lube. Twisting to make sure the valve slides in straight.

I've got a extra I removed and yesterday notice had a slight but in it from not being installed the the fill/ gauge block. Light working the edge made it slid in with no o ring damage. 

Theoben Rapid MKII .25. AZ build. Jmo

 

[bucketboy]

Clean the lube out of the o ring groove, insert the o ring dry then apply a small amount of lube before pushing the parts together. The o ring is very fine and even a small amount of lube in the channel can cause it to bulge and get chopped off.



bb