Separating front and back pressure gauge

[Half centreParticipant @halfcentre]

Hi folks – I was wondering if anyone had any tips for separating the front and back of small pressure gauges. With the two I have the back slides into the front telescopically. This seems to be a very common fitting. The fit is very tight and I have yet to find an "easy" way to separate the two halves to enable me to mark the red line on the scale.

Any thoughts gratefully received

Martin

[Half centreParticipant @halfcentre]

How to?

[ZanParticipant @zan]

Hold the outlet vertically in the vice. The mech is usually attached to the body “cup” then carefullyAnd gently punch the bezel off. Worked perfectly on all mine

[Half centreParticipant @halfcentre]

Thanks Zan – That sounds an excellent idea – I will give it ago.

Martin

[Nigel Graham 2Participant @nigelgraham2]

Thank you both Half centre for asking, and Zan for replying: I am faced with the same difficulty!

I think I would use a scrap of semi-rigid plastic or wood, possibly aluminium, as punch.

[Half centreParticipant @halfcentre]

Just tried it and it worked a treat. Gentle tapping with a small hammer and an aluminium rod as a punch. Careful to move it around the circumference to get an even movement. Found 2 raised pips formed on the inner casing I presume deliberately to create grip. Sanded them a little flatter, grip still adequate but now far easier to separate.

Thanks again Zan

Martin

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