Bottom Bracket Maintenance - How to Remove, Install & Re-Grease Your BB (Threaded & Pressfit)
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- Опубликовано: 25 июл 2024
- Threaded BB
0:00
2:41 Crankarm removal
3:08 Spindle & crank removal
3:43 Crank & bb cup cleaning
5:56 Threaded bb removal
8:08 Thread & bearing cleaning
10:42 Teflon tape installation
13:10 Grease threads & thread in bb
14:07 Spindle & bearing greasing
14:43 Spacer & dust covers install
20:08 Grease crank interface
21:41 Tighten crank
Pressfit BB
23:41 Crankarm removal
24:11 Spindle & crank removal
24:25 Crank & bb cup cleaning
28:13 Pressfit bb removal
32:10 Frame, bb, bearing cleaning
32:49 Pressfit bb greasing
34:05 Bottom bracket install
36:52 Spindle & bearing greasing
38:52 Greasing the crank interface
39:23 Tighten cranks
In this video we cover how to remove, re-grease, maintain / service and re-install / replace your mountain bike's BB (bottom bracket). First, we will be performing the BB (bottom bracket) service on Jeff's UNNO Dash which uses a threaded English (BSA / Threadfit BB) bottom bracket. Then we will take apart his gravel bike which uses a pressfit (PF92 BB) bottom bracket. In this video, Liam covers every detail imaginable when it comes to removing, greasing, and replacing your bike's bottom bracket all while walking you step by step through the entire process. Home mechanics, this one's for you. Enjoy!
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#bottombracket #service #bikemaintenance 
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What other tech tutorials do you want to see? Let us know down below!
removing creaks from the kassette, drivetrain, rear hub? 😁
All of them!
How about just more epic bike builds :P
Pedal overhaul & bearing replacement
How about wheel/hub servicing and new fork upgrade
track stand with the tito’s cocktail at the end was nothing but BOSS shit 😂👍
I'm just gonna watch you do it for no reason. Lol. I'm sure the knowledge will come in handy someday.
I like that this video wasn’t clipped apart or sped up too much, POV is cool too because is sets a reasonable expectation for how long it will take. I was billed $60 to replace a BB and crankset by a shop once because it would take an hour, did it myself in 15-20 minutes for the first time doing it.
The prices bike shops quotes are ridiculous 🤣
I will probably never do this myself, but I looked every minute. Why? .... :) Very entertaining, thanks for all the videos you guys make!
Friday therapy, cheers and thanks from Sweden!
Huge thanks for this video! I knew I’d need it eventually so I saved it to watch again later. This was a huge help. I tried the Teflon tape hack so hopefully that helps extend the life of my BB. You guys rock!
Who does your editing? Some fricken library of clips in that dudes head👍
"this is something you guys should do every few months"
Oof. Had my bike for 2 years now, and it sounds like its going to fall apart anytime I put more force on the cranks. Time to take it apart, thanks for the vid
It's always 5 o'clock when you are doing bike maintenance
Nice tips. Love the teflon and grease tips. I will be working on mine soon! Looks like a creak ending method for sure!
Just got my Rockshox seals from you guys delivered to me out here in the UK! Great service, now I’m going to get out there and shred after a few weeks off the bike... ☀️😎🤘
Watching this while my buddy installs his new bottom bracket on my ex bike with my toolz 🤙
thx guyz, very entertaining and informative 👊
Thanks for the video, now I will add Teflon tape on my BB maintenance
I can't wait to get my order from you guys! Thanks for being an awesome company
Thank you so much! Nice video, love that you did pressfit too, cause I found a lot about threaded bb online but very less about pf.
really enjoyed this video, very laid back and informative. would LOVE to see a video on a complete rebuild of the damper side on a pike fork (charger 1 or 2). I'v done mine a few times but always feel like i'm missing something and have never come across a detailed video of that type. thanks
Great video. I will reference it many times as I attempt it myself. Thank you.
Love your instructional stuff!
100% going to follow this to get rid of my BB creak. Thanks 👍👍
Great tutorial Liam, definitely helped me out
You have got to be the most chill bike mechanic ever, kudos man and ty for walking through that! Don't feel so bad torqueing to my oogha doogha spec... ;-)
Man you made that look easy. I’m gonna try it myself. 👍
I suggest watching some of Hambini's videos and understand WHY creaking happens.
Thanks!! You've erased my irrational fear of bottom bracket maintenance. 👍
Every time you said the word “this guy,” I took a sip of my Moscow mule. I ran out of ginger beer....straight vodka and lime toward the end of the video was really getting awkward. Lolol! Kudos for the video! Keep em coming! 👍🏽
Excellent video. Lots of great info here :)
I use the Teflon tape too! Super!
Jeff's new bike is so sick!
luv your workshop setup
Tight-tight-tight. Yeah!
Sweet job 👍
I am trying to watch this precious video but can't take my eyes off the tattoos. Brilliant artwork 🤘
Tighten up towards the rear wheel, loosen up towards the front wheel.
That's 100000000000x easier than trying to guess which is the cross threaded side.
FYI, in case you do not know or maybe someone else doesn't know. "cross threaded" means to screw something in incorrectly over the original threading, rendering the threads damaged. You meant "reverse threaded" which means backwards threaded. Normal threading is lefty loosey righty tighty, but reverse threading is lefty tighty righty loosey. It is common to use reverse threading when a part is in a normal spinning orientation that would cause it to loosen during use.
all fun and games until you are installing pedals and get things mixed
What a beautiful bike!
fantastic use of that Barry insert at 37:50
Very good channel, glad I subscribed.
Dude thank you thank you thank you thank you 🙏 keep doing this
Excellent. Thank you.
Great video
Wonderful video. Wish you guys would crank out more podcasts 😭 I have an hour long commute... I didnt realize my bb needed to be that tight. Probably why it's creaking haha
I have used the Yellow (Gas) Teflon before and found that it holds shape a bit better when screwed in. Doesn't mean its any better, just holds together a little more.
More content like this 👍👍👍
Thank you for the inspiration! I just made myself a Moscow Mule! It's 5 o'clock somewhere.
p⁰]]
Is it weird that I actually watch you do this for no reason? The shop is like a candy store.
Great video. I was getting worried you forgot about a key ingredient, your drink. Mine is coming out tonight. I expect you will see an order for a new BB too.
f ing Zach that was so good. I was cracking up in a good way . entertainment. cheers
It would be great to include some pointers on removing other brands of crank, e. g. Raceface! (The ones that can be impossible to remove. Friend of mine completely destroyed his crankset - it still didn't come off)
Would like to see how to true a wonky wheel and how much tension each spoke should have.
That's funny. I enhance my maintenance experiences similarly.
Very Nice
35:55 If you put A LOT of grease to the edge of the bearing that's against the missing dust cover, it would make it harder for dust and water to creep into the bearing surfaces. It will add some friction, though.
Also it is important to note that anywhere that has grease won’t rust. The spindle of cranks are aluminum, but bearings are steel and need grease to prevent them from corrosion.
First time I’ve used someone used Ptfe tape or plumbers tape as it’s called in the uk. However I suppose it does make sense!
I’m watching it because I’m upgrading my bb and crankset
Love the movie references 😂 lol
Is that poop on his tire? The answer is yes. How do I know? I am the one that put it there.
I got kind of a cracking noise in the front and I think it can't be the headset bearings because the bike is 8 months old but I have this knock block system from trek. Could it be the knock Block thing or any ideas??
Installing a dropper post. Would be a good topic
Great tutorial. The music on the other hand......
Another great how-to vid, nice job Liam! What is that storage bag Jeff has on his Salsa?
It's a small pack made by Salsa. I put my Stans Dart tool, spare tube, CO2 and multi-tool in there 💩
Worldwide Cyclery that’s super cute. Do you guys carry that? I’ve been looking for a small pack like that to take on shorter rides when i don’t bring my camelback.
On the press fit, can you slice the plastic sleeve to get it in the bb? Better than no sleeve?
Can i add a drop or two drops of dry chain lubr inside my hollowtech sealed bottom bracket ball bearings to make them roll a little smoother? Is this good or harmful to the ball bearings?
How about a video on hydraulic brake bleed?
I understand the use of allllll the grease and the reason you loaded up because it becomes a block to keep dust from getting deeper into the BB and bearings, etc... but doesnt it also become a magnet for the dust? So with all the dust flying around and sticking to the grease there where the crank arms are moving, wouldnt that create a grinding feel?
Im about to take my crank arms off and bottom bracket etc to clean everything because mine feel/sound like there is dirt around the moving parts. Thinking it would be good to get the grease in the deeper components but less as you get closer to the surface/exterior parts? what are your thoughts on that reasoning?
My sram crank requires 54Nm, no way that dinky little wrench got you there. I used my auto torque wrench.
Thanks for the Teflon tape tip.
I have a pair of sram cranks with two bolts on the outside of the cranks but when i remove the bolts the crank doesn't come off
What do i do?!
(It's one of the ones without a preload collar)
Just a question, what part of the bottom bracket or crank that causes creaks? is it the bearings of the bracket? the threads of the shell? or the spindle of the crank?
I need that park tool kit! Do you sell that kit or is that a custom pieced together?
Other videos say don't put grease on the bottom bracket if you have a carbon frame as it reacts with the carbon. Is this true or false ?
But my bike is new, only a few rides in and already squeaking. Is this normal?
I just tighten the crank a bit and it stops, but then after a weeks or riding, it comes back
Jeff is a wreck! LOL
Can somebody explain why left-hand threads are used for bottom bracket when the threads are in orientation where threads open to the direction of the pedaling? I would understand if one side would be left-hand threaded if the threads would be pushed tighther with the pedaling if the thread moves even a bit.
Very good info. Thanks, I'll need it some day. BTW, your camera man's skill needs improvement. :-D
I’m building a new hard tail and I have a RR BSA threaded BB and a Race Face Next SL crank. When I insert the crank spindle through the BB, even before I install the drive side, the crank seems too tight and does not spin freely as it should. After it’s fully installed, but before I set and tighten the preload washer, it is so tight that it will not even spin a full rotation by giving it a spin by hand. Is the Race Face BB just a piece of junk? Should I replace it with a Sram DUB BB, or anything but a Race Face?
As many tech stuff as possible. I'll just watch for good reasons 😛🤐
How do i check if the carbon area of the BB is oval or not? i get a bad creek when at the bottom of the left rotation.
Great video. Isn't that an UNNO Aora?
Unno Dash :) They made a video on the build here - ruclips.net/video/JLy08bEallA/видео.html
What about popping the dust seals on the cups and adding a bit of grease I’ve been hearing there is almost nothing in the damn things??
Apply retaining compound at the Pressfit BB shell before inserting it in, lubricants or grease I do not recommend.
How about the bearings ? Don't you need to clean and grease them too ?
I also would like to see drunk bike mechcanic. Take str8 up shots and do fixin on them bikes!! That would be fun.
Its 5o'clock somewhere
HOT TO SERVICE A BB MT800 BOTTOM BRACKET PLS?
Pro tip: If you add 0:00 to the timestamp list in the description it will enable chapter markers for desktop users.
Also, butts. 🍑
So i noticed that he didn't regrease his bearings?
I have a press for BB on my jeffsy. I removed the 10mm and 8mm but my crankset didn’t come off as easily as yours did. Any tips?
Oh, you shouldn't remove 10 mm, that's the self extraction bolt. Screw both in again, so that the 10 mm bolt is tight again. Than start to loosening up the 8 mm, it will get lose and tight again. Go on until the crank comes off.
michi ulrich thanks man! What’s the self extraction bolt for?
It's 5 o'clock someplace.
where are the bearings you refer to ?
I wish I saw this video I spent $68 on getting my bottom bracket replaced and fixed it totally seized up and the bike mechanic said it was shredded or whatever. And he said I need to stop doing bunny hops on my road bike to he said it was a contributing factor🤣🤣🤣
cheers to oval chainrings!
Hi Jeff!
Question: the threaded part that you backed off at 27:49, what is that for? Did you re-tighten after you put it all back together? I did not see that.
The threaded collar that he backed off was the bearing preloader. Yea, he probably should have adjusted it at the very end. It is used to remove any side-play of the cranks and to put a slight side-load on the bearings. Helps them last longer.
@@joppek77 thanks. Much appreciated.
I am sorry for the stupid and not needed comment, but is teflon tape mandatory? (threaded shimano bb)
lol titos in the office?
What kind of grease is that?
What bike is that
My square taper bb is starting to do weird stuff... When I take the bike after a day of not using it, the crankset is completely seized and won't spin. After applying tons of force, it start to spin again and after 30/40 revolutions it spins smoothly and freely. Is this something to worry about?
I am not a pro bike mechanic, but it might be the case that the grease inside have dried and hardened to the point where it's solid. You can either run it as long as it works, and then replace it entirely, or try to service it to extend its life. If it's Shimano cup/cone style, you can open it, clean it and re-grease it. If the balls and races are fine it could serve you for many more years to come.
I'll have to buy the tools to remove the crankset, and the bb, and then I can check what bb I have. Are there any additional tools I will need to service the bb?
What is the weight capacity?
Sram DUB pressfit. Takes 54 NM torque. Nearly impossible to remove :D
Woah. I think I'll just drop my bike off at your shop....
Good idea. I dropped mine off at Darryls house which is in need of a bit of a cleaning ass well. It's great having a pal that is an ex bike mechanic. When I stopped in a month later to check progress I was ecstatic to see how he had successfully removed the entire bottom bracket that must have been cleaned and drying on a napkin somewhere ready for reinstall action. Ass an added bonus he had also removed the rock shox flight attendants and both maxxis dh minions that he explained were now missing along with my guide brakes, chromag saddle and drpper post. Tits okay we'll finger it out in the morning he mumbled before advising me to vacate the premises. That was 11 months ago only a week after receiving my brand new specialized Enduro in the mail
I don't hear creaking anymore at least😂😢😢😢
Why is the crank so tight?