15. How to Overhaul Wheel Bearings
Overhaul a hub, replace and grease the wheel bearings, and adjust the cones.
This tutorial will demonstrate how to grease your wheel bearings. For this job you'll need some rags, waterproof grease, and a 17mm open-end wrench. You'll also need a 13mm cone wrench for a front hub, and a 15mm cone wrench for a rear hub. When overhauling a hub, you should always replace the ball bearings. Most front hubs need 10 3/16" bearings per side, while rear hubs usually need 9 1/4" bearings.
Place the wheel on its side and slide a cone wrench onto the cone flats, and then loosen the left, or non-drive side locknut by turning it counter-clockwise against the cone wrench. Completely un-thread and remove the cone and locknut, and then slide the axle out from the right side of the hub.
Clean all of the old grease off of the axle and cones and remove all of the bearings from both sides, making sure to count how many you take out. Then clean the inside of the hub and carefully inspect both the cones and the inner bearing races. If there is any damage such as pitting then the cone and/or hub should be replaced.
Apply a generous layer of grease to both of the hub's bearing races. Then carefully insert all of the new bearings by pushing them down in the grease. When all of the bearings are installed, there should be about half a bearing space left. Cover all of the bearings with a layer of grease and lightly grease the axle threads.
Once the bearings are installed on both sides, carefully slide the axle into hub, making sure the bearings stay in place. Thread the left side cone, washer (if any) and locknut all the way on finger tight.
Now lay the wheel back on its side and place the cone wrench on the cone. Tighten the locknut against the cone and check to make sure there is no play in the hub, and that the wheel spins freely. You may have to loosen the locknut and repeat the procedure many times before it is correct. Quick release mechanisms tighten the cones slightly, so if you have a quick release axle, you'll have to leave a slight bit of play in the hub.
Re-install any seals and then put the wheel back on your bike. Finally, check the adjustment again by moving the wheel side to side at the rim. Again, there shouldn't be play in the wheel, and it should spin smoothly.
What size 29er tyre can I run on a 700c wheel with an inside rim width of 19mm? Would a 29" x 2.3 tyre be too wide or would it just about work ok?
Ibie... Read more >>
Have a set of MTB wheels that the rims(aluminum) have some corrosion around where the spokes fasten(nipples). It has a chalky white residue that seems to creep under the existing paint and makes the paint peel off.
What is the best way to clean them up and get them ready for a couple coats of paint?
Thanks !!! ... Read more >>
I put my Park wheel truing adapter onto my Park repair stand and have now had some experience with it. It is pretty neat, very happy with it, and it works well for truing Mountain bike wheels etc. (Not a jig for wheel building of course as other items come into play that this stand cannot cope with) One wheel was so bad I had to loosen all the spokes and snug them all up evenly to get the wheel into a shape I could start from. Another bike the tire was out of round while the wheel was bang on. The more I use it the better I get. So every bike I work on now I can easily check the wheels in mi... Read more >>
so my new bike will be here soon and I want to swap out my 15mm nuts up front for a quick release. not sure which yet..... might go for XT as I hear good things about them. i'll be getting a redline monocog, 29er SS. i'm an able tinkerer but just getting a bike tool kit together to take on more of my own repairs. pictures are encouraged as i'm new to all this. thanks all.
I don't believe I've posted this before....
By dating parts, I know the approximate age of Peugeot...
Front Normandy Hub made in 50th week of 1979, and rear Hub made in first week of 1980.
Trying same on Gitane Mixte that we believe is 1970-ish, with same Normandy Hubs and I hit a brick wall...
Stamped Normady, but that's it...
Searching on Internet for Normandy hubs I see only date code info as what I find on Peugeot.
Anybody hear of any other Date Codes on Normady hubs?
Every now and then I try (again) to date code th... Read more >>
have just watched the video on replacing rims. Just wondering what the indicators would be that you needed new rims. The video gave no info on this. Just curious.
Colleen... Read more >>
I'll preface this by saying I know very little about bike maintenance.
I recently bought a new bike, Vilano's generic, entry level 21 speed. I'd hoped to find a good deal on a used bike on Craigslist, but quickly realized I didn't have the bike knowledge to do that. The Vilano had good reviews for my price range, but I realize that, to an extent, you get what you pay for, too.
I got the bike yesterday and started to do some prep maintenance. I know I could've had a bike shop do everything for a reasonable price, but I like figuring stuff out and doing my own maintenan... Read more >>
Is the rear wheel on a bike properly dished if the rim is equally distant from the frame? I trued my rear wheel a little today, and I'm wondering if I need to go any further to check if it's centered than measuring the distance between the rim and the frame on either side of the wheel.... Read more >>
Hi. Riding in sub zero temps here and my rear brake has seized for the last three days heading to work but today I started off pedalling but after about 100m my pedals no longer moved the rear wheel. I had a major service a few months back where all cranks, chains etc were replaced. Could it just be the cold that is preventing me moving and if so what can I do to cure it.
Sitting sadly on the bus commute as I type.... Read more >>
I need a couple spoke protectors for a 70+ mm hub. I see some listed on e-bay, but they are the smaller hub spoke protectors.
Can anyone tell me where to find the bigger hub spoke protectors ??... and how do they measure for them ??
Thanks... Read more >>
Hi I need help. I'm rebuilding my bike ready for spring and noticed my rear wheel bearings needed changing so took cones off removed. Axel and the non driver side bearing and cassette and I'm struggling to get the other side bearing out I have tried Everything possible they are sealed bearings any help would be great I can post pictures if needed.... Read more >>
I need to replace the suspension plate on a chariot trailer. The plates slide onto the axle, and therefore I need to remove at least one brake drum from the axle.
This is what it looks like.
However I subsequently found this parts diagram, which suggests what I've labelled as "final part of axle" and "collar" are actually a single part which fits inside the axle (ringed in red)
I can think of several ways of getting this out - unscrew it (seems unlikely), heat the axle with a blow torch, or hit it out... Read more >>
Question: Say you have a bike that was built in every 10 year increment since 1920 or so...
1920, 1930, 1940, 1950, etc...
What grade of Bearing 100, 50 25, etc would have been used for Mfg, and I realize this might be MFG specific too... ??
What I'm trying to determine (And this could be another of those 'unknown' things about 1970--1980 French bikes...)
If you rebuild an old bike, based upon year, what grade of bearing do you think you're replacing?
I would assume there would be a diminishing returns issue....
Jus... Read more >>
i have an old motobecane roadbike, and have been learning that nothing on it is standard sized (relative to american road bikes), which has posed some difficulty when making repairs and replacements.
id like to replace my back wheel- can i use any wheel or do i need to find a french/motobecane manufactured one?
thank you very much for the advice!... Read more >>
hey I'm trying to build a bike for the first time and I would like to build one in its entirety (including putting together the wheels). I am fairly smart, and am confident that I will be ok assembling everything, but I just need help finding what parts I need.
so, I have a 1973 Schwinn Continental frame and fork, and I am currently working on comverting it to a fixie. As I dont have any wheels as a reference (I only have the frame and fork that I bought off of eBay), I was wondering what hubs I should choose for this bike.
thanks for any help!
-cvs1998... Read more >>