Huben K1 - Is there a way to repair or re-calibrate the tank gauge?

On my 2nd hand Huben K1 (2021) the gauge on the tank is broken and not reactive to the tank pressure. It is stuck on MAX., but the rifle works like a charm otherwise. It's set up for pellets, holds air and is the most accurate air rifle i have.

I wonder, if anybody has had a similar issue and was able to fix it somehow? Of course, i have looked through this and other places, but could not find any clues.

Thank you.
 
No way to repair or recalibrate our cheap gauges. Get a new one to replace the old. Not familiar personally with Hubens but if they're like most others as far as the gauge (manometer) they can be found for cheap. Just make sure of the thread size for your gun. The $7 one I put on my FX Boss has worked for close to 8 years now. If you get one that reads within 100lbs of your compressor/pump gauge, be satisfied. Have you checked to see if debris might be clogging yours? MIGHT be as simple as that.
 
On my 2nd hand Huben K1 (2021) the gauge on the tank is broken and not reactive to the tank pressure. It is stuck on MAX., but the rifle works like a charm otherwise. It's set up for pellets, holds air and is the most accurate air rifle i have.

I wonder, if anybody has had a similar issue and was able to fix it somehow? Of course, i have looked through this and other places, but could not find any clues.

Thank you.
It needs to be replaced. You have to carefully let all the air out of the gun and install a new gauge. Dont overtighten it. Just tight enough so it doesn't leak air. Huben probably sells replacement gauges.
 
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thanks for your replies.

it is not as cheap as suggested, because the part contains the whole fill port / airtank endcap section and costs about 100€ (i am in the EU zone).
The k1 uses a different gauge than what is common. It is pushed into a groove and slid sideways to install. A small oring provides the seal. The gauge can be purchased separately from the end assembly. It is part 91 below.

Dave
IMG_7223.jpeg
 
From time to time I have had a spot of trouble with gauges that has been rectified simply by degassing the gun and removing the inspect the seal. Twice now I have found that during an overhaul and reassembly I have over-tightened the gauge resulting in the seal squishing flat and blocking the gauge port .In the first instance the gauge would not show pressure after being refilled, and in the second case the gauge showed fully charged, and would not go down as the tank was depleted. New seal, problem solved. YMMV
 
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thank you
The k1 uses a different gauge than what is common. It is pushed into a groove and slid sideways to install. A small oring provides the seal. The gauge can be purchased separately from the end assembly. It is part 91 below.

DaveView attachment 593528
thank you, i have so far only seen the complete filling assembly being sold. good to find out that the part is also available on its own.
 
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From time to time I have had a spot of trouble with gauges that has been rectified simply by degassing the gun and removing the inspect the seal. Twice now I have found that during an overhaul and reassembly I have over-tightened the gauge resulting in the seal squishing flat and blocking the gauge port .In the first instance the gauge would not show pressure after being refilled, and in the second case the gauge showed fully charged, and would not go down as the tank was depleted. New seal, problem solved. YMMV
thank you, that is something to learn from.
theoretical these problems are eliminated by the non-standard design of the huben gauges.