imgur.com/a/x2Qsd


What tool would I use to remove these cranks and bottom bracket? The cranks don't have any pinch bolts and they say 'Hollowtech'. The photos show after I have taken the dust covers off.I quickly got overwhelmed with how many different types of bottom brackets there are. I'm new at this and need help!

Thanks for your advice

Looks like you have a Shimano HollowTech 1 crankset, which is the older 3 piece type crankset. See Park Tool for a good description of tools and procedure to remove.

https://www.parktool.com/blog/repair...icle-section-1

Good luck.

+1


OP needs a crank puller with a wide plunger.


Or an old puller and some improvising skills.

The original Hollowtech cranksets were 3-piece cranks with an Octalink cartridge bottom bracket. Octalink was Shimano's proprietary version of a splined crankset/BB interface. There were others like ISIS, which were similar. You can generally use the same crank puller for these different splined interfaces.

The Park Tool CWP-7 crank puller can be used to remove the crank arms from the spindle. If you use a tool like the CWP-7 that can do square taper and splined cranks, be sure to use the wide plunger for your splined setup.

A Shimano cartridge bottom bracket tool like the Park Tool BBT-32 can be used to remove the bottom bracket from the frame.

There are many companies making extraction tools, if you live in a town city print the photos go to a decent LBS, you need a special tool to pull off the crank arm, then as mentioned another tool to remove the BB, also type in on Google tool for removing "Shimano hollowtech"