On Shimano Hollowtech crank spindle, this is where the safety pin goes in. It is the little hook thing that goes around the securing bolts on your non drive side. There is a small pin on the bottom of that hook thing and it goes into this hole. It ensures the proper level of engagement between the crank spindle and the crank arm.
hummel_brummel on
It’s for the plastic retention tab on the pinch bolts
Dwindles_Sherpa on
This is the installation manual Shimano provides, it offers literally no information regarding installation. https://si.shimano.com/en/um/1NJ0A
Comicunderbite on
I hope you figure it out
Spartan-R028 on
Head to si.shimano.com and enter your crank’s model number. The document you’re looking for is the dealer’s manual, not the user manual. It’s expected (by Shimano) that these would be professionally installed but that document will have the instructions.
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On Shimano Hollowtech crank spindle, this is where the safety pin goes in. It is the little hook thing that goes around the securing bolts on your non drive side. There is a small pin on the bottom of that hook thing and it goes into this hole. It ensures the proper level of engagement between the crank spindle and the crank arm.
It’s for the plastic retention tab on the pinch bolts
This is the installation manual Shimano provides, it offers literally no information regarding installation. https://si.shimano.com/en/um/1NJ0A
I hope you figure it out
Head to si.shimano.com and enter your crank’s model number. The document you’re looking for is the dealer’s manual, not the user manual. It’s expected (by Shimano) that these would be professionally installed but that document will have the instructions.