TT600 - alternative cap of tensioner case

[Goro]

hello
i have two engines, one is a 34K the other il 34L

I found them partially disassembled, so i cannot say where this device is coming from

in one there was mounted the standard cap, as per exploded view i share
in the other one there was mounted this kind of device. It looks a sort of pump which was taking the motion from the camshaft I assume. I would say a small oil pump, even if there attached there's a small segment of blind pipe most probably not original

anybody knows how it was working and the function of this?

[Peen]

Hi,

Thats the drive for the rev counter. Attaches to the cylinder head on the end of the camshaft.

[Goro]

ah ok... the piece of pipe i found attached was misleading.

I was completely wrong..sorry for the stupid question from my side