HES installation

[khpossum]

I got a new HES plate for my 02 1150GS and need to install it, but running in to a bit of an issue. There is the HES plate, the rotor with the window in it and the pulley. I noticed that the rotor does not center on the shaft. Its opening it a bit larger then the shaft end and can be shifted around something like 1-2 mm. . Hard to understand why it was designed that way, but that's the way it is. The rotor does fit tight on a slight edge on the inside of the pulley. Putting the sheave and the rotor together and centered makes it hard to put the combination on the shaft while making sure that the rotor indexing tab lines up with the shaft end properly. It makes it a blind stab at it. Putting the rotor on the shaft end it can not be centered properly while putting the pulley over it. The rotor needs to be centered so it will not run into the hall sensors.

So, is there a trick to it that I am missing?

KP

 

[Cook1e]

It's a few years since I had mine apart, but I don't recall it being a problem...

Does this help?

 

[quaycrest]

I note in the instructions provided by Cookie that the pulley number 3 in the diagram and the hall effect gate are required to be glued together. So this may suggest they can come apart and become misaligned. Might be worth checking alignment of these parts and ensuring they are secure or re-glue them. I underdstand the glue is for a temporary hold only.

 

[theoneandonly]

did mine a while ago , don't panic it's easy. iirc the cutter has a slot for the woodruff key , you can't get it wrong.

 

[Steptoe]

Part number 5 needs to be stuck to part number 3 (well it doesn't if you know what you're doing and aren't ham fisted).

Just use a blog of grease to hold the "shutter" it in place, i also mark the outer pulley with a felt tip to show where the locating lug is, and then fit the pulley.

If you can't manage to do such a simple task then put the tools down and walk away.

 

[khpossum]

Got it. It is not that I can not get it together. It seems a weird unGerman setup, why have the rotor with an over-sized sloppy hole. I figured I was missing something but obviously did not. Time to get the Deutsche Schmierfett out, or maybe some superglue.

Thanks all.

 

[Pekkavee]

Time to get the Deutsche Schmierfett out, or maybe some superglue.

Thanks all.

Superglue is fine.

 

[khpossum]

Thanks. I actually found that when I pressed the rotor hard enough onto the sheave it would actually stick. The little ridge on the sheave was enough for a "press fit", minimally but enough to stick. So I will continue to do my own work, I won't put my tools away. In the 45 years I have done my own work I found that is the best way to go. The few times I have brought my bike into a shop, an official BMW shop or independently owned, I regretted it most of the time.