Overhauling a 3-piece bicycle bottom bracket is a relatively straightforward process that can be completed with basic tools and some patience. Here’s a step-by-step guide:

Tools and Materials Needed:

✅ Allen wrenches (hex keys) https://amzn.to/3Tb4Dt9
✅ Bottom Bracket Hook tool. https://amzn.to/3Nf8DVM
✅ Spanner Tool https://amzn.to/47INICL
✅ Crank Puller. https://amzn.to/41fXNET
✅ Bearing grease https://amzn.to/3sVJNnd
✅ Clean rags. https://amzn.to/3GxdRZr
✅ Hammer or mallet (optional) https://amzn.to/4a8kWNo

Steps:

1. Identify your bottom bracket: Before you start, you need to identify the type of bottom bracket you have. There are two main types of bottom brackets: threaded and cartridge.

2. Remove the cranks: You will need a crank puller. There are two main types of crank pullers: pullers that use bolts and pullers that use a press. To use a bolt-type crank puller, insert the bolts into the crank arms and tighten them until the cranks pull off.

3. Remove the bottom bracket cups: To remove the threaded bottom bracket cups, use a socket wrench to loosen the lockring. Once the lockring is loose, you can use a hammer or mallet to tap the cups out of the frame.

4. Clean the bottom bracket bearings: Once the bottom bracket cups are removed, you will need to clean the bearings. Use a clean rag to wipe away any old grease or dirt from the bearings. Pay particular attention to the races and cages.

5. Grease the bottom bracket bearings: Apply a thin layer of bottom bracket bearing grease to the bearings. Be sure to pack the grease evenly into the bearing cages.

6. Reinstall the bottom bracket cups: Once the bearings are greased, you can reinstall the bottom bracket cups. For threaded bottom brackets, thread the cups into the frame until they are snug.

7. Reinstall the cranks: To reinstall the cranks, simply slide them onto the bottom bracket spindle and tighten the crank bolts.

8. Test the bottom bracket: Once the bottom bracket is reassembled, check for any play in the headset. There should be no noticeable play. If there is play, you may need to adjust the bottom bracket cups.

Additional Tips:

✅ If your bottom bracket is particularly stubborn to remove, you may need to use a penetrating oil to loosen it.
✅ Be careful not to overtighten the bottom bracket cups, as this can damage the bearings.
✅ If you are not comfortable overhauling your bottom bracket yourself, you can take your bike to a professional bicycle mechanic.

With these tips, you should be able to successfully overhaul your 3-piece bicycle bottom bracket.

🗞️ Sign Up for my Newsletter: http://eepurl.com/hRAwTP

Please help support my bike advocacy!
☕️ Buy Me A Coffee: https://www.buymeacoffee.com/thebikeguy
or
👕 “The Guy’s” T-Shirts: https://i-know-a-guy-bicycles.myspreadshop.com/
or
💰 I will get credit if I buy something through the Affiliate links, even if they are other products through that portal.

See What I Use To Refurbish Bikes (Affiliate):
Tools I Use Daily:
🛠️ Workstands and Tools: https://iknowaguybicycles.com/guys-picks/workstands-tools/
🚿 Polishing/Cleaners/Lubes: https://iknowaguybicycles.com/guys-picks/polishes-lubes-and-cleaners/
🛞 Tubes & Tires: https://iknowaguybicycles.com/guys-picks/tubes-tires/
🚲 On-the-Road Accessories: https://iknowaguybicycles.com/guys-picks/tubes-tires/

My passion for bikes started when my parents opened a shop in the 1980s called Parker Bikes (we were located in Parker, Colorado). My love for cycling has continued since then, in my work and with my hobbies of road cycling and mountain biking. After my parents’ shop closed, I worked for other bike shops (including Lee’s Cyclery in Fort Collins), where I built and sold bikes, fixed and tuned up bikes, and managed inventory.
I love working on bikes and want to share my passion for cycling with others. So, next time you’re talking cycling with someone and wondering how to get started or where to go from here, you can think, “I know a guy!”

Where to find me:
🩷 Website: https://iknowaguybicycles.com
❤️ “The Guy’s” T-Shirts: https://i-know-a-guy-bicycles.myspreadshop.com/
🧡 Bikes: https://iknowaguybicycles.com/product-category/bikes/
💛 Parts: https://iknowaguybicycles.com/product-category/accessories/
💚 Facebook: https://www.facebook.com/IKnowAGuyBicycles
🩵 Twitter: https://twitter.com/IKAGBicycles
💙 Instagram: https://www.instagram.com/iknowaguy_bicycles/

📬 Attention Companies: If you are interested in working with me, don’t hesitate to get in touch with me here at justin@iknowaguybicycles.com

Music By:
Music by Eklecticism – Zion – https://thmatc.co/?l=CA3F5791
Music by Eklecticism – Wicked – https://thmatc.co/?l=476B55A5
Music by Alundra – Smile – https://thmatc.co/?l=634C81C5
Music by Axl & Arth – Rather Not – https://thmatc.co/?l=038EEE31

#bike #bicycle #sports