FX Quick question on M3 Manometer Gauge size

[lbmalleo]

Hi guys, sorry to bug you again (it’s been a while), I have an M3 which I bought used and has the 1st reg. pressure gauge broken, I need to replace it, now the guy I bought it from told me that the Manometer is smaller on that pressure gauge than the other 2 on the M3, is this true? He tells me it is shorter in depth than the others, is this right?
I checked the part number schematics on the FX page and it says they are all 28mm gauges, I found nothing about the depth.
Can you guys clear this out for me?

Thanks from Argentina,

Lucas

 

[coastal drifter]

I looked at my M3 but didnt measure it, all three look the same. You could call Utah Airguns.

 

[lbmalleo]

I looked at my M3 but didnt measure it, all three look the same. You could call Utah Airguns.

Thanks, I e-mailed them earlier today. According to the guy that sold it to me, the outside looks the same but its shorter in depth than the other two. I just need to double check this before buying a new one!
Thanks again!

 

[coastal drifter]

Sometimes if you over tighten them, they dont work

 

[lbmalleo]

So, I contacted Huma in the Netherlands, they told me it takes a normal 28mm pressure gauge and that I am missing a part which is a brass washer, the part number according to the schematics is D90.
Next question is, who should I contact to get these spare parts?
Thanks again,

Lucas

 

[lbmalleo]

I looked at my M3 but didnt measure it, all three look the same. You could call Utah Airguns.

If you look under the pressure gauge, between the body of the PG and the gun there should be a brass washer, thats the piece I’m missing!
Thanks

 

[Trucker3573]

Have you tried what coastal drifter said ? If you over tighten gauges they often won’t read anything and appear broken. Maybe try loosening it little by little and see if it will read. I have many times used absolutely nothing under gauges in guns and they sealed and worked fine.

 

[MongooseV8]

FX USA is done closed down, probably for good. So Utah Air is your US contact for spare parts. I havent had to order anything for mine yet but I know they carry lots of unusual replacements instock. And Im sure they can get something from FX Swederland if you need.

But to answer your original question the gauges are different where they seals. For my M3 I got used, the front reg was deleted and gauge removed when I got it. I decided to run the dual regs; so I used a steel washer and a random oring between the gauge and washer and it has been holding tight so far.

 

[HogKiller]

If you look under the pressure gauge, between the body of the PG and the gun there should be a brass washer, thats the piece I’m missing!
Thanks

I'm too lazy to look at the drawing but.....it should be an 0-ring/X-ring for actually sealing?

 

[MongooseV8]

I'm too lazy to look at the drawing but.....it should be an 0-ring/X-ring for actually sealing?

The Xring is on the passenger side gauge and the rubber sealed metal washer thing is on the driver side gauge. The gauge doesnt seal on the threads or the orifice face like a normal application. It has to seal on the main body of the gauge housing to allow air to pass through the breech.

 

[MongooseV8]

Apparently this type of seal is called a "Bonded Washer" or a "Dowty Seal" and is designed for some BSP thread applications. Lane Regulators sells them but they are available lots of other places too.