Motometer pressure gauge rebuild

[70SATMan]

Does anyone have experience in rebuilding Motometer tire pressure gauges?

I have a line on one but, appears that the internal seal might be dry. Can they be replaced?

Not talking about the red bakelight types....

This type is what I'm looking at...

[rpidduck]

Hi Michael - Funny, I have the same gauge, though with a deflation protrusion on top of the opening, and Kg/cm2 in place of the bar label. Purchased in Austria back when as I recall. Always thought it more precise than the bakelight in the tool kit. Still gets regular use and works fine, so can't offer any advice. Hope the lights are coming along.
-Richard

[kentf14]

I've got the same gauge with what sounds like the same dry seal. I was going to try to dig out the old one with a dental pick and then hunt for a suitable o-ring @ the hardware store. I'll let you know if it works for me.

Kent

[70SATMan]

Hi Michael - Funny, I have the same gauge, though with a deflation protrusion on top of the opening, and Kg/cm2 in place of the bar label. Purchased in Austria back when as I recall. Always thought it more precise than the bakelight in the tool kit. Still gets regular use and works fine, so can't offer any advice. Hope the lights are coming along.
-Richard

There has been progress and I forgot to send those pics didn't I... I'll shoot you an email...

I do like these better. They look sturdier and have the pressure hold function. Always preferred these to the ones supplied in the early kits myself as well.

I'm trying to avoid buying something I'm not going to be able to use.

[70SATMan]

I've got the same gauge with what sounds like the same dry seal. I was going to try to dig out the old one with a dental pick and then hunt for a suitable o-ring @ the hardware store. I'll let you know if it works for me.

Kent

Kent, how accurate is yours? Does anyone know if they can be adjusted for accuracy?

[qotsa]

May be late but I opened mine yesterday to fix reset of the needle and clean repaint. Here's how it look inside and don't think accuracy can be adjusted.

piston push the white part that rotate needle axes.

[NorthernThrux]

They can be adjusted if you are adventuresome. You can add tension to the spring by bending the piece that goes into the rectangular arc towards the platic or remove sension by bending toward the open part of the arc. Obviously you need a reference gauge to know what is "corrrect". Correctnes varies with temperature for anything with a coil spring, aso thats the limitation.

Ravi