19. How to Overhaul a Threaded Headset
Overhaul your headset at least once a year to check for wear and re-grease the ball bearings.
If you ride your bike a lot, you should overhaul your headset at least once a year to check for wear and to make sure the bearings have enough grease.
For this tutorial, you’ll need some waterproof grease, an old toothbrush and some cleaning solvent. If you have an older 1″ headset, you’ll need a set of 32mm spanner wrenches. Larger 1 1/8″ headsets usually require a set of 36mm spanner wrenches.
Before you begin, you’ll need to disconnect the front brake and remove the brake cable from the lever. You’ll also need to remove the front wheel. To remove the stem, simply loosen the stem’s tightening bolt far enough so you can give it a light tap with a hammer. This will knock the inner wedge loose and allow the stem to slide up out of the fork.
Now loosen and remove the locknut. Holding the fork in place with one hand, remove any spacers and unthread the adjusting race. Make sure to note how many spacers there are, and what order they came off. Gently slide the fork down and out of the frame. Make sure to make a note of which way the bearing races are facing before you remove them.
Wipe clean all of the bearing races located on both the frame and fork as well as the upper threaded race. Inspect all four of the bearing races to make sure they are not grooved or pitted. If so you will likely have to replace the entire headset unit.
Thouroughly clean the ball bearing cages with your toothbrush and solvent. Then wipe them dry with a clean rag, and set them aside to air-dry. Inspect the ball cages to make sure they aren’t bent or worn. You can replace the cages without replacing the entire headset, but you’ll have to bring the old set to your local bike shop for proper sizing.
If all of your parts are ok, apply a layer of grease to all of the bearing races. Then install the ball cages the same way they came out and add another layer of grease on top of them.
Once the bearings are in place and fully greased, carefully slide the fork back into the frame and finger-tighten the adjusting race. Wipe off any excess grease that may have squirted out the sides. Slide the spacers back on and thread the locknut on finger tight.
To adjust the headset, hold the lower adjusting race with a spanner wrench and use a second spanner to tighten locknut against the adjusting race.
To test the adjustment, check that the headset turns freely and check for play by rocking the fork back and forth in the frame. Re-adjust as needed until the bars spin freely and have no play.
Reinstall the front wheel. Before reinstalling the stem, coat the shaft and wedge with a thin layer of grease. Then reinstall and tighten the handlebar stem, and reconnect the front brake.
Then re-test the headset adjustment by making sure the bars spin freely, and using your front brake, rock the bike back and forth to double check there is no play in the headset.
I brought a new 1" threaded rigid fork to replace old one. The Old fork tube diameter is 22.2mm, however I've just found out the new one has tube diameter of 21.1mm therefore my stem doesn't fit into the forks. Is there any way around this or do I need either a new stem or new set of forks again. I can return the forks as I I've scratched them when fitting the crown race thanks. They are both 1", it's annoying as I assumed there was only one type of 1" threaded for... Read more >>
I have a 2006 Bianchi 928 with a FSA Orbit ZS headset. I have a creaking sound coming from the head tube when I am out of the saddle and climbing. I replaced the headset parts other than the plastic cups that are pressed into the frame and the crown race which is pressed onto the fork. I have tightened the headset bolt up to almost 4 NM but I still have the creaking sound.
I cannot tell exactly where the creaking sound is coming from but I assume there is some play in the fork. When I turn the front wheel sideways and hold the brake on I can feel only a tiny bit of movement i... Read more >>
I've recently rounded off a screw (pictured) and firstly I'm confused weather that part comes with my headset or my stem? Also can any headset fit with any stem?
I'm sure I could just buy a new screw but I'd rather buy a new headset.
If it helps I have a Social Narc 2013 bmx and the stem is a social freeloader it says the headset is just a "internal headset" now I don't know if that is internal the brand or how it's situated.
Any help would be great
Jordan... Read more >>
New to the forum.
I have an older dual suspension mountain bike, a giant ATX900. It has a weird head tube inside diameter of 42mm, which puts it somewhere in between the old 1 1/4" standard and the 1 1/2" standard.
Anyone know what type of head set was intended for this diameter head tube?
Cam... Read more >>
So I got a cheap bike from craigslist that I'm trying to fix up. The headset to this thing is really loose, if I lift the handle bars I can shake the whole fork easily. (Sorry if my terminology sounds retarded, I'm not super bike savvy)
I tried to loosen handle bars and tighten the bolt the youtube guy told me to tighten, with no luck. The bottom of the fork near tire seemed just fine, but the top still shook around. It almost seems like I'm just missing an important part. Im including pictures of it all put together, taken apart, and all the parts from the problem area. Because I... Read more >>
I am trying to remove a headset so I can service it but one part won't come off, I'm trying lubricating it and leaving it overnight. But I don't know if I should be trying to screw it off or trying to bang it off.
Any help would be appreciated!... Read more >>
I have pressed headset bearings into steel frames many times, but in a couple of weeks I'll be doing it into carbon fiber - I do have the headset press in tools. In a video I watched, the guy checked the sizes with a digital Vernier gauge on the frame and the bearing piece - is this absolutely necessary? If so, does anyone know the tolerances for a light press fit? It'll save me looking it up in my old books.... Read more >>
advertised as 1 ⅛” headset. chinese carbon mountain bike frame on ebay. it has v brake tabs so i wouldnt' be surprise if it was a pretty old design. so do you think the fsas i linked above would work. Let me take some better pics.
here you go with some additional measurements.
cups are metal with black paint on them.
those numbers are 43.84mm, 35.05mm, and 8mm.
here's the fork
Read more >>
[attachment=4796]I just got this bike and it needs work, the headset moves alot, i thought it was the bearings, it still might be, i cant see any, unless they are sealed? if they are sealed it seems everythings fine, though the gap from the forks to the stem is small so it wont lock all into place, making it move, i added a spacer but now the bolt will not reach the fork thread, the bolt is also slighty bent making it harder to tighten and work out whats up with it, do i need bearings? a new bolt? something completely different? im not very good with bearings at all so i need help please,... Read more >>
Is there one or two bearings in this assembly? If there is two .... then im gonna need one. Elgin 1938. Does anyone by chance have any diagrams of the Elgin 37,38?
Monk... Read more >>
Thanks for taking the time to read this.
I just got my hands on a 2nd hand Dahon folding bike.
There seems to be a little play in the headset but as this is my first folder I'm not sure if this is inherent in folders or not.
Would anybody know if it is inherent and have any ideas on how to fix it? I have some experience of changing threadless headsets on mountain bikes but I'm not sure about folder headsets.
Ben... Read more >>
I've acquired an old frame, I think early '80's Japanese or Taiwanese (thanks to nfmisso for his help there!) and I'm planning on building a single speed out of it. This is my first bike build so its a learning process for me, I'm pretty excited about the whole learning thing I must admit! I have a million and one questions to ask you bike guru's about bike building etc!
I plan on building the bike on a relatively low budget so I'll be looking on ebay for second hand parts etc. I want to keep the bike looking like an old bike not a new build where possible (as original as possible but n... Read more >>
Hi; I just bought a used, rather nice Columbus frame to build a lightweight for my daughter. It has (had) a no-name roller- bearing headset which was decidedly crunchy, to the extent that when the forks were turned backwards it almost jammed. Also there is a half-ring patch of bare metal on the lower front of the steering tube ..... no sign of damage to the forks or frame, so I suspect poor installation of a worn headset and have bought another. Anyone else come across this type of uneven friction? Don't want to put out a bike with wonky steering!... Read more >>
my first post here.
i decided i needed a little project so i boughta 1968 Hercules with a 21" frame. it will be a surprise for my daughter.
I'd like to replace the parts shown in the pics with new ones. When i took it apart all the bearings fell out. i wonder if i could replace the bearings with caged ones?
what are the names of these parts please?
[attachment=4173]... Read more >>
I'm new to the forum and need help. I bought a used year old Trek 7300 and then bought a headset extension to give me a more up right riding position. I'm 67 and bending over is no longer an option. Anyway to get to the point I installed the headset extension and after tightening the headset bolt there was still a little play in the headset. I'm pretty sure I tightened the headset bolt before the clamp bolts but after several attempts I can't say for sure I didn't forget something along the way as I said I'm 67. Anyway after several attempts I thought well maybe I just ne... Read more >>