How To Remove And Replace A Threaded Bottom Bracket | BB Service | GMBN Tech Maintenance Skills

[@gmbntech]

How often do you replace your BB? Did you find these tips helpful?

[@retrocloud760]

Very helpful. I am about to do my first one on my commuter bike, headed to the shop to see if they can get my parts. I like working on my own bikes if possible because its fun.

[@rpaxton443]

Another excellent "how-to" video, I especially appreciate your wise and experienced cautions.

[@bobski1151]

You send this video to the day were Im replacing mine whit new bearings and crank

[@tylersimpson5541]

Imagine you put crank arms on there that are sized for a little kid 😂

[@DonnieX6]

perfect timing for this tutorial, thank you! My threaded Shimano BB just started to creak last week and wanted to disassemble it anyways, was just googling how to do it yesterday :)

[@Mapantz1]

At 13:28 you mentioned that you have the plastic spacer on the non-drive-side cup.. isn't the spacer supposed to be on the drive-side if you're using one?

[@omri446]

Thank you doddy, I learn from you a lot of important and helpful things.

[@chrisridesbicycles]

Since we recently had more CC stuff on GMBN (tech) you could make a co-op with GCN tech talking about what the roadies have adopted from MTBs and vice versa.

[@theshedMTB]

Good video, i like that your using a torque wrench. Ive only been recently been watching your videos, really been enjoying them. I really like when you talk about vintage stuff to, brings back memories!

[@donbridgewater2988]

Another awesome video from the Doddster, Thank you so much for all your hard work.

[@CoasterJames]

I’ve found on deore and slx cranks, that once you have removed preload cap and undone pinch bolts, there is a safety tab you need to flick up before you should remove the crank

[@jordanlajeunesse4464]

i also noticed doddy didnt undo this while taking the cranks off. Makes it much easier because that tab actually puts a pin in a hole in the spindle locking it on.

[@Jacob99174]

Do you guys know which Park Tool socket to use for the Bb52? I can’t find on their website Also, if I wanted to upgrade to an MT800, is that a different socket?

[@CoasterJames]

@@Jacob99174 I have the bbt9. This I could use to remove the deore bottom bracket. The mt800 is smaller but comes with a piece of plastic which you insert into the tool to remove the bottom bracket. I’m not a fan as it’s hard to insert the plastic into the tool and then a very tight fit on the bottom bracket. I would look for better tool

[@Jacob99174]

@@CoasterJames any difference between 800 and 52? Or just stick with 52? Besides color

[@CoasterJames]

@@Jacob99174 the mt800 is xt series of component so is better, for the extra few quid worth an upgrade

[@IntoTheWhite04]

Ha, was just about to look for a gmbn video about changing my Occam's bb

[@IowaMTB]

Great video Doddy! picked up a couple hints. Thanks 👍

[@Pitstershedder7517]

Thanks 🙏 dodds my brother was curious 🤨 about installing his bottom braket I shared this video to him an he successfully installed it thanks to your video keep it up 👍🏻 Top tech video’s from the boss

[@madtownangler]

First threaded BB I ever put in I tried putting it in backwards. Luckily I stopped before I got it too stuck for a bike mechanic to get out. That was in 1994 or so.

[@matsherwood6277]

Great video! Thanks for the helpful walkthrough.

[@DanuelNuel]

Let's do this boyz! ONLY THREADED BSA BB!!

[@scottlstone]

Great video as usual

[@Fincher123]

Ihad to Replace the Bottom Braket yesterday. I need to Cut the Frame in to get it out =P And the i place it in the new Frame =)

[@DanuelNuel]

And that's why you always put grease there! Lately I was forced to remove old threaded square BB - after soaking it with WD40 it finely gives up.

[@piast99]

Question #1. Where to buy them? Most are out of the stock everywhere...

[@redbomberr4594]

Nice bike

[@finn_niko]

I have some weldtite lithium grease in hand, would this be suitable for this job?

[@aaronstoneheart3300]

#askGMBNtech Heeey Doddy... Deciding to buy my first full sus bike but with idea to upgrade later... which could be your pick for good basis... P.S. So glad that found this channel... helps to grow in biking thing 😎✌

[@TK-zh5ck]

How do you know when to replace a bottom bracket to things just get loose or is there like a mileage standard you should be looking at?

[@rockytrails8074]

Using an automotive air wrench gun will get a seized BB unstuck. Start on low setting & be careful of course! This is where the socket BB tools really can shine. Much easier than busting your knuckles trying to hold the regular ratchet wrenches to the cup properly.

[@chrisridesbicycles]

#askGMBNtech I have one bike with XTR BB and one bike with XT BB. Both come with a plastic ring adapter to make them fit the standard tool but none of these adapters fit the standard blue Park Tool cup (only by a smidge). Why is that?

[@BikingVikingMTB]

Hi Doddy great show by the way! I have an orbea rallon M10 2018. Believe it or not I have gone through 10 DUB BB’s since having the bike from new.! they Dont last at all as I tide up in the peak district a lot sand/dirt and as you the no the weather can be horrendous. Just wondering if Hope BB’s or Chris King are better? Perhaps a silly question but need to ask as Im replacing them all the time. I get alot of play after a month too. Cheers Jon

[@ToyBoysChannel]

The grease used is assembly grease correct and not precision bearing grease? sorry for the noob question... :p

[@gmbntech]

Hey! Normal bike assembly grease is just fine! 👍

[@ToyBoysChannel]

@@gmbntech Thank u very much :)

[@d.agri06]

I have just done this literally yesterday I didn't have a clue how then when I saw this pop up I was like oh really

[@nate8930]

FYI don't buy aluminium BBT socket, they strip easily, just found out the hard way. Go with iron or steel type.

[@stephenoakes2074]

Changing a BB for the first time and need a little advice/have stupid question: Bike is a 2018 Whyte 905 WITH SRAM GXP BB as standard. I've just ordered a Wheels MFG BB as a replacement, but it's arrived with a million spacers and some wavy washers (which weren't on the original BB.) My first thoughts were to install the new BB without Spacers, as the old BB didn't have any fitted BUT the actual cups of the new BB (the external part, not including the threaded section) are thinner than the original BB, so maybe I need spacers to maintain the proper Chainline? Or do I just throw it a the bike and be done with it? 🤔🙄🤦🏼‍♂️ Apologies for stupid questions, first time I've done this. Cheers. Steve

[@davidtotten9399]

I Have a Vitus nucleus vrs hardtail I have done over 1400 miles on it . The Cranks Where Creeking Badly . ( was Embarrassing ) I have bought new Crankset as shown in the video and still here Creeks from it . Any Ideas what's wrong with it.

[@danielherbertsson8316]

Is it just me that saw the old spacer installed on the drive side but that the new spacer was installed on the non drive side? Can you clarify?

[@paperweight2920]

With these BBs if you do not use loads of grease when you get to the threadlock you can easily crossthread it. The other option is to screw in and back out to remove the excess thread lock or clean it off entirely and apply some fresh stuff that's easier to screw in.

[@BGraves]

The threadlock they use also serves to keep water out of the threads and the internals of the bottom bracket

[@balazskiss1724]

PLEASE DO THE SAME WITH AN OLD TYPE BB PLEASEEE!!!!!

[@theshedMTB]

If you have square taper cranks you replace the bb with a cartridge bearing and it just screws in

[@ahhlongg]

looks like obea is the new sponsor

[@nicolasdesanantonio]

😂😂

[@lverror4042]

#askGMBNTech Hi Doddy. What if I allready striped BB threads, any solytion?

[@krzysiu4003]

You'll need to get your threads re-tapped.

[@David-rb3tk]

New bike.

[@smowtthegoat5533]

I think you should of mentioned that you were using 2 different sized bottom brackets with 2 different sized bottom bracket tools.

[@rayglasscock9667]

Take photos with your phone off process of work carried out good service record when selling .

[@kurnik2462]

@6:11 Shimano clutch off or on?

[@CurtisLodge1991]

Off, just to slacken the chain in order to remove

[@rodhagen9393]

You should never double click a torque wrench. Every time it clicks it tightens the fastener a little more.

[@dadbodmtb]

So they both undo winding to the front of the bike?

[@twistedneck]

Correct

[@ChrisKim-eo9ku]

6.13 Turns a clutch off to on?

[@LajRa5]

A plastic tire lever will remove that little crank cap just fine if you dont want to spend the extra money on that little tool. Just use it like a big flat head screw drover

[@Montblanc1986]

Face brake mounts

[@FNK7NK]

Where Locktite was applied, do not add grease.

[@jparry2662]

6:35 Preload tool has a crack in it lol

[@BGraves]

SRAM DUB vs Shimano?

[@llove-electrical]

Is orbea a channel sponsor

[@redlinebmx14]

Anyone know a good alternative to a sm-bb52 ?

[@Jacob99174]

I’m wondering the same. Looks like he went from bb52 to a MT800? Just be careful, I think they used different sockets due to size

[@scottlstone]

I hate the Park Tool Preload Tool, clearly has a design flaw, one side has a hook (use for pulling up the plastic clip) but when you unscrew the preload nut if you’re not careful the hook on the tool can put a deep scrape in the crank arm (fortunately mine had sticker protection). The hook needed to be machined on the back side of the tool! I would be interested if anyone else has this tool and experienced similar problem?

[@louiescott5055]

Little tech question for doddy! I’ve got a sram gxp 83mm English threaded bottom bracket which are currently pretty unavailable in the uk at a affordable price. The skinnier 70-60 (ish) width model is still readily available though. my question is is what’s the difference? The bb comes in 3 parts with each cup and then a plastic spacer tube in the middle. Could I buy the skinnier bb and swap out the plastic spacer to achieve the 83mm from the 60-70 version? Cheers for anyone that can Help, louie

[@rufuswood7092]

Sorry - this isn’t answering your question! but where are you finding 73mm GXP bb in the uk - i need to replace mine and can’t find one anywhere !

[@scruffygit771]

Yep, you could do that. The bearing cups on their own are the same whatever size width you buy and so you could throw away the new skinnier tubes and replace with your existing 83mm centre tubes.

[@hm6219]

Why now?! I had changed my BB a week ago))))

[@tylersimpson5541]

Imagine your buddy asks you to do some work on his bike and you cross thread everything in on purpose 😂 you’d be paying for that huh my boss

[@tylersimpson5541]

You cut the chain a little too big on purpose, size the high and low screws a little too tight on both ends and give just a little bit too much cable tension on the shifter paddle adjuster lol

[@tylersimpson5541]

Coat the chain in a heavy grease and say yeah that’s just lube it’s ready to go man 🎉😅 then strip all the hex fittings with an Allen key that’s a size too small. Throw in the wrong oil in the brake lines and pump a few small air bubbles in there with a syringe

[@JacquiPenar]

Are they sponsored by Orbea now? Just noticed them riding

[@AlBorland3877]

Yep. Doddy mentioned it in the previuos episode.

[@moritzbluhm3362]

2 days too late :D

[@lverror4042]

2 weeks too late

[@BGraves]

GMBN should move to biodegradable chemical where possible and do a video on the available alternatives.

[@bobothericefarmer1878]

Mmm

[@cripticdestiny]

look at the dropper post flex when he tries to loosen the non drive side.. hahahahahahahaha only an idiot would mount the stand on the dropper post shaft

[@zsanterre]

Wait, there's sane cyclists? Where they at tho?