How to remove the bezel of a Mitutoyo 505-626 dual caliper

[moditwell]

 

[Buchanan]

You need to pull off the hand first. it is a press fit. You almost need a special puller so as not to damage the thin dial. There is a recess in the center that dose not support the dial. Then the dial lifts off and the retaining screws will be visible. It is a while since I last opened mine.

 

[moditwell]

i have removed the hand but the face (dial) does not lift off. the bezel and the face plate turns in unison to set the vernier to zero before use.

 

[moditwell]

You need to pull off the hand first. it is a press fit. You almost need a special puller so as not to damage the thin dial. There is a recess in the center that dose not support the dial. Then the dial lifts off and the retaining screws will be visible. It is a while since I last opened mine.

The "thin dial" that you are referring to is the face plate or the hand?

 

[Buchanan]

Sorry , there is a retaining ring around the edge of the dial that need prizing out. The dial plate is thin.

 

[moditwell]

Sorry , there is a retaining ring around the edge of the dial that need prizing out. The dial plate is thin.

There isn't any retaining ring around the dial. is yours a Mitutoyo 505-626 model? Thsnks

 

[Mechanicboy]

Why repairing the worned and imprecise measure tool when it's time to buy a new measure tools who are free of fault and ready to use?

 

[moditwell]

Why repairing the worned and imprecise measure tool when it's time to buy a new measure tools who are free of fault and ready to use?

I have a digital caliper.
My late fathet left this for me. Its still very accurate. Ir needs a crystal replacement. Probably keep it after cleaning it and put the crystal back. Any help is much appreciated.

 

[Buchanan]

I am going from memory. And looking at the drawings in your duplicate post , i suspect the dial plate is held on to the body with glue/double sided tape. I would put a small hook tool through the hand hole and gently pull. You should be able to see where the dial is attached by the flex in the dial. A little warmth from a hot air gun(just warm,not smoking hot) might help the glue to let go.

 

[moditwell]

I am going from memory. And looking at the drawings in your duplicate post , i suspect the dial plate is held on to the body with glue/double sided tape. I would put a small hook tool through the hand hole and gently pull. You should be able to see where the dial is attached by the flex in the dial. A little warmth from a hot air gun(just warm,not smoking hot) might help the glue to let go.

its not giving the slightest budge.The dial stay solid locked in place together with the bezel. Reslly frustrating.

 

[moditwell]

Looking at the spare parts, the dial is not glued on. The outer circumference has locating tabs to keep it in place. i believe the aluminium knurled bezel is heated to expand and slipped over the bottom piece thst is mild steel. when things cool down, the bezel grips tightly agsinst the bottom piece of mild steel and they rotste as one unit.

 

[moditwell]

Thanks to everyone who share their many suggestions on how to remove the bezel. And here its is, out and the guts are visible.

 

[Herbiev]

How did you remove it?

 

[moditwell]

How did you remove it?

Push the bezel from underneath.

 

[DIYGuy]

I've just posted a new question to the forum about this. I see what you did above but I still can't quite figure out how to lift/pry/pull take out the dial from the rest of the caliper. Any other suggestions would be appreciated. I have a 505-637 model Mitutoyo. Thank you!

 

[moditwell]

I've just posted a new question to the forum about this. I see what you did above but I still can't quite figure out how to lift/pry/pull take out the dial from the rest of the caliper. Any other suggestions would be appreciated. I have a 505-637 model Mitutoyo. Thank you!

Put 2 aluminium blocks supporting just the bezel. The crystal must be removed first. Then push the center of the face and the bezel comes off. The rest is easy.

 

[DIYGuy]

Put 2 aluminium blocks supporting just the bezel. The crystal must be removed first. Then push the center of the face and the bezel comes off. The rest is easy.

Thank you moditwell for your advice.

 

[JonnyZ]

Looking at the spare parts, the dial is not glued on. The outer circumference has locating tabs to keep it in place. i believe the aluminium knurled bezel is heated to expand and slipped over the bottom piece thst is mild steel. when things cool down, the bezel grips tightly agsinst the bottom piece of mild steel and they rotste as one unit.

View attachment 95069

Does anyone know where to find a dial like this one? Mine has paint chipping off the edges. I also need a new crystal if someone can point me in the right direction. Appreciate it!

 

[ChazzC]

Does anyone know where to find a dial like this one? Mine has paint chipping off the edges. I also need a new crystal if someone can point me in the right direction. Appreciate it!

Check eBay, searching for Mitutoyo Dial Caliper Bezel/Crystal/Dial and a bunch will pop up.

 

[JonnyZ]

Mine takes a flat 34.7mm crystal. Everything I see for the 505-626 is 36mm and change. This is an older model for sure. The old, broken crystal measures 33.7mm. The OD of the dial is exactly 34mm.