I wish I knew how much roller brake grease I have already put into this thing. It seems like I put in a lot already.
I did a rebuild and put a light layer of grease on everything and then put 2 more doses in after assembly. After the 2nd it was making considerably less noise. At $25 a 40ml tube I don't want to waste more than I already have.
A syringe would have been a better idea.

For maintenance.
"Apply an appropriate amount of grease (approx.
5 g) while turning the wheel slowly" is a 1/4 of the tube.

How much grease do I need to put into these brakes when newly cleaned??

How much was there when you took it apart? that would be my base line.

?
Before it was taken apart is was making noise.
1) I added more lube and it still made noise.
2) I added even more lube and it still made noise.
3) I took it apart, clean stuff out and took off some burrs.

So does it need more lube than before the same or less?

How can I tell from the outside or even just taking it off the hub how much grease is in it?
Before it wasn't working and I don't have a new one or lots of experience to determine what brakes have enough in them. so?

I don't think rollerbrakes are meant to be taken apart.

I think the shimano spec is a "pea" sized amount. And usually you can tell if you don't have enough if the brake is VERY touchy (no modulation.) I'd just add a bit at a time until the brake wasn't touchy anymore.

thanks.
The stuff is expensive and I recall that pea-size amount quote, like you I don't believe it either. The instructions say 5 grams but I didn't measure every 6 months.
I have modulation and I like the modulation but then again I never had them new.

Shimano's position is that they are not serviceable meaning to me that swapping their parts out is not in scope. After getting the orientation of the parts right they are really easy to take apart and reassmble. A lot of people are servicing them to clean them out but once they wear out that is it. Sigh, maybe try more grease and see if it works its way in.

The fact that the tabs that hold it together have to be bent back to disassemble it would be a pretty clear indication that they did not intend for them to be tampered with.
I've messed with other assemblies that Shimano did not intend to be serviceable, but those crimped tabs are only good for a limited number of cycles before they fail.

Not on my front or rear or any of the vids I saw. Maybe on some older versions?
No tabs a person had to bend that I saw. The tabs I did see I did not have to bend and were totally normal for keeping pieces together.
The assembly had tabs that dictated how the parts went on and they also had nubs to snap and hold the pieces on.
Definitely an assembly that can be taken apart many times.

Interesting. I have not had time to check those video links, but I will give them a look.
I think the one I saw with the crimped tabs was the IM 40 model. maybe the larger ones are different, or maybe as you say, they are no longer made that way.

I never figured it out. I had a roller brake on the rear of a commuter bike with a Nexus 8R35 hub. I greased it carefully using Shimano roller brake grease, it seemed as if I could never get any modulation with that brake, it was all on locked-up or not stopping. Before I knew it, grease was coming out of the brake from every pore. After several years I gave up and sold the wheel with brake. I never felt as if the Shimano roller brake was a viable option if the rider exceeds 10mph.

Throw it in the garbage and get SA DRUM brakes.

They put them on all the rental bikes here and those heavy bikes can go at a pace. Aside from my current mystery the thing that bugs me about them is the amount of grease they eat, it does not seem very enviro friendly.

Are sending me those gear, brake hubs, spokes and a few bucks for wheel rebuilds?
I am sold if you are.