Impact o-Ring Question

[Drumsnguns]

I've got my Impact torn down for a leaking X-ring and am waiting for the ever-elusive 1.0 mm Allen wrench to arrive. In the meantime I thought I'd replace all of the o-rings and I came across something a little odd. BTW, I am using the part ID in parentheses. According to the FX support page, theValve House (B30) takes 4 o-rings. Three are the 10.5X2mm NBR 70 (B29) BUT it says the one, on the end. is a 14X1.5 NBR 70, (B29.1).

The thing is, I have been using the B29 o-rings on all the 4 grooves on the Valve House. How can it take an 0-ring that has an ID that is 3.5 mm larger and still fit? Also, I have two o-ring kits and neither has this ring. It's been shooting since 2017 without a leak with thousands of pellets through it....so ???

Has anyone else noticed this? I guess I'll keep using the B29's

Thanks,

KP/NC

 

[sniperlabyo]

Hi KP, no need for That set screw new one don’t have one, just used two vice grip to unscrew not going to damage the threads. Your looking at the MK2 valve housing drawing, continue to used the 10.5X2 for the older VH.



Ernest 

 

[heavy-impact]

I've got my Impact torn down for a leaking X-ring and am waiting for the ever-elusive 1.0 mm Allen wrench to arrive. In the meantime I thought I'd replace all of the o-rings and I came across something a little odd. BTW, I am using the part ID in parentheses. According to the FX support page, theValve House (B30) takes 4 o-rings. Three are the 10.5X2mm NBR 70 (B29) BUT it says the one, on the end. is a 14X1.5 NBR 70, (B29.1).

The thing is, I have been using the B29 o-rings on all the 4 grooves on the Valve House. How can it take an 0-ring that has an ID that is 3.5 mm larger and still fit? Also, I have two o-ring kits and neither has this ring. It's been shooting since 2017 without a leak with thousands of pellets through it....so ???

Has anyone else noticed this? I guess I'll keep using the B29's

Thanks,

KP/NC

Before the MKII, impact valve housings used 4 of the same o-ring. The MKII has a larger diameter threaded portion for the 5cc larger plenum/airtube and takes a larger o-ring.

 

[Drumsnguns]

Thanks Ernest and Heavy-Impact. Guess it's a typo because the Gen 1 Impact schematic also lists the 14x2 o-ring for the housing. Appreciate setting me straight and will use the 10.5 o-ring.

As far as the set screw on the hammer stop....it is definitly there on my Gen 1 Impact and a 0.9 mm allen wrench does grab it but I will wait for the 1.0 mm to arrive and will loosen it. I don't trust the 0.9 to grab enough of it and it would really tick me off if I stripped it.

Thanks again for the input guys

 

[GQ]

Thanks Ernest and Heavy-Impact. Guess it's a typo because the Gen 1 Impact schematic also lists the 14x2 o-ring for the housing. Appreciate setting me straight and will use the 10.5 o-ring.

As far as the set screw on the hammer stop....it is definitly there on my Gen 1 Impact and a 0.9 mm allen wrench does grab it but I will wait for the 1.0 mm to arrive and will loosen it. I don't trust the 0.9 to grab enough of it and it would really tick me off if I stripped it.

Thanks again for the input guys

You dont need to remove this screw.