Hey all. So I needed to change out my press fit BB. I read some posts about different options to press in a new BB using ParkTool's or a DIY method. Getting the bearing cups out needs a specialized tool that ParkTool sells for about $40. There was no getting around this tool as ParkTool pretty much has this figured out. They sell a couple press' as well. One being shop quality which is well over $100 and the other is an "economy" version for about $85. You can achieve the same results with a trip to your local hardware store and $5. See below on how...
First off, since I'm changing out a Shimano BB91 BB, I purchased the ParkTool BB-90.3 bearing removal tool. It's about $40 and comes with a couple handy bushings. See picture below:
Next, you'll head over to the hardware store and want to buy one each of the following:
1.) One 5/8" x 6" bolt (make sure it has enough exposed thread. some bolts have little thread at the top which isn't ideal for this job)
2.) Two 5/8" flat washers
3.) One 5/8" nut
Though it's not required, having the two bushings from the ParkTool BB-90.3 tool kit is quite handy. I needed the removal tool anyways so it was pretty cool for ParkTool to include the two bushings for installation as well.
Here's the press assembled:
And a couple of pics of how it looks like with a press fit bottom bracket in between:
And how it looks like on the bike while pressing a BB in (you'll need to use a couple wrenches to do the work pressing the BB into the shell on the bike):
Everything to make this tool cost $5 aside from the ParkTool bushings. You don't have to use the bushings but they do make the press a little more "stable" and easier to work with. You can use larger washers than the one's I used if you're not going to use the ParkTool bushings and achieve similar results. Honestly, with how well this DIY tool worked (and for how cheap), I don't understand why you would want to spend anymore on a "shop" version (unless of course you work in a bike shop).
Hope this post helps save people a few bucks!
First off, since I'm changing out a Shimano BB91 BB, I purchased the ParkTool BB-90.3 bearing removal tool. It's about $40 and comes with a couple handy bushings. See picture below:
Next, you'll head over to the hardware store and want to buy one each of the following:
1.) One 5/8" x 6" bolt (make sure it has enough exposed thread. some bolts have little thread at the top which isn't ideal for this job)
2.) Two 5/8" flat washers
3.) One 5/8" nut
Though it's not required, having the two bushings from the ParkTool BB-90.3 tool kit is quite handy. I needed the removal tool anyways so it was pretty cool for ParkTool to include the two bushings for installation as well.
Here's the press assembled:
And a couple of pics of how it looks like with a press fit bottom bracket in between:
And how it looks like on the bike while pressing a BB in (you'll need to use a couple wrenches to do the work pressing the BB into the shell on the bike):
Everything to make this tool cost $5 aside from the ParkTool bushings. You don't have to use the bushings but they do make the press a little more "stable" and easier to work with. You can use larger washers than the one's I used if you're not going to use the ParkTool bushings and achieve similar results. Honestly, with how well this DIY tool worked (and for how cheap), I don't understand why you would want to spend anymore on a "shop" version (unless of course you work in a bike shop).
Hope this post helps save people a few bucks!