Boema 2 group lever

[kofekitt]

Maybe put a spacer on the shaft so piston doesn't screw on as far. As long as piston isn't sticking out of the bore, it's fine. Bottom of piston should be approx flush with bottom of bore, have a pic?

[towe0609]

New stainless 130mm springs (700735-x)

[kofekitt]

Hi again, did you use the 130mm or 140mm springs?

[towe0609]

Silicone seals arrived and installed.

I’ve discovered that one lever only operates in full range of motion with brass (seal section) unscrewed a few turns from the pistons ‘arm’. Ie the spring is slightly less compressed. Is there a ‘set up’ procedure for the pistons?

[towe0609]

Not quite sure how to interpret the results of this test ... but I look forward to the day I can replicate it!

https://www.youtube.com/watch?v=tJDc9BLl_5M

[towe0609]

The sight glass seals for the little home pavoni levers are 15 x 9 x 5mm silicon. Could that work?

They look like they could be just the ticket ... thanks again Mike.

[kofekitt]

The sight glass seals for the little home pavoni levers are 15 x 9 x 5mm silicon. Could that work?

[towe0609]

Things starting to get a bit more serious now ... re-assembly commenced ... but still waiting for tools and parts to be able to make real progress.

Interesting to look back at where I started (see fourth photo in this post).

If anyone can point me in the direction of some rubber seals (see picture for example) for the boiler level sight glass (9mm ID) I"d be grateful. The seals were toast and I doubt the dodgy o-ring configuration I came up with will seal. From what I can gather the CMA/Astoria set up is for 11mm glass tube so unfortunately the commonly available gaskets are no good.

[towe0609]

What's a gasket cutter from Japan look like and why do u need it?

Olfa cutter : #90B Heavy-Duty Compass Circle Cutter

Because I didn't know how else to cut a perfect circle in Klingersil 4430 ... not even sure this will do the trick ... but I hope so.

[Lyrebird]

You don't have to need something as cool as a custom gasket cutter.

[JMcCee]

What's a gasket cutter from Japan look like and why do u need it?

[Lyrebird]

Waiting for gasket cutter to arrive from Japan

Got a link?

[towe0609]

Refurbished all the valves, de-scaled and cleaned groups, and generally got bits and pieces ready to rebuild. Waiting for gasket cutter to arrive from Japan and for some stainless hardware ... but I'm feeling more confident its all going to go back together. A few progress photos for interest.

[towe0609]

A few photos to keep it interesting ...

Kofekitt - I'd need a sheet min 23 and pref 26 or more cm's square. I'll PM you so you can let me know a price. I assume I could use it to make group flange gaskets too ... so might get a bit more if you have more than you need.

[kofekitt]

Whoops, yes it's 4430, 2.0mm thick from memory, but would have to check tomorrow