My neighbor's ebike developed a squeak in the crankcase/bottom bracket after washing (hose, not pressure-washer). Knowing nothing about the drive system I still volunteered to look at it.
Couldn't get past first base, which is remove the crankarm. My square-taper crankarm extractor does not work because the spindle's hole is too big (nothing to drive against).
I thought maybe it's one of those "self-extracting" ones I've heard about. Looked at a Park's video and no, it's not self-extracting.
Tried to pry it off. Nope. Nothing convenient to pry against anyway.
I can (obviously) remove the retaining bolt (see pix). It is an 8mm hex, iirc.
How do I remove? It's a Suntour arm, if that is helpful.
And if anyone if familiar with these Bosch motors (bottom bracket drive), is there anything to lube?
