Repair notes

Servicing Loose-Ball Hubs: My Kitchen Table Method

I've been putting off overhauling my front hub for months because it developed that telltale grinding feel. Last weekend I finally tackled it, and honestly, it was way less scary than I expected. Here's what actually happened when I serviced my loose-ball hubs at home, including the mistakes I made so you don't have to.

What You Actually Need

Forget the fancy lists. I used two cone wrenches (15mm and 17mm for my hubs), a regular adjustable wrench, degreaser, shop towels, fresh grease, and a magnetic parts tray from the hardware store. That tray saved my life—those ball bearings are tiny and love to disappear. I also put down an old towel because this gets messy. Some people say you need a vice, but I just worked with the wheel flat on my workbench. The key tool is patience, which I didn't have enough of the first time I tried this on my rear wheel two years ago.

Taking It Apart Without Losing Your Mind

I removed the wheel and laid it flat, non-drive side up. The locknut comes off first, then the washer, then you carefully unscrew the cone while holding the axle from the other side. Here's what nobody tells you: when that cone comes off, bearings will try to escape. I learned to have a container ready underneath. I counted nine 3/16-inch bearings on each side of my front hub. I actually drew a little diagram of what order everything came off because I knew I'd forget. Take photos with your phone—seriously. I also wiped each bearing clean immediately and checked for pitting. Two of mine had tiny rough spots, so I ordered a full set of replacements for three bucks.

Cleaning and Repacking

I scraped out all the old grease from the hub shell and races with a shop towel, then hit it with degreaser on a rag. Don't spray degreaser directly into the hub if you can avoid it—it gets everywhere and is a pain to fully clean out. The cones got the same treatment. Once everything was spotless and dry, I packed fresh grease into the hub races. I use Phil Wood grease because a tub lasts forever, but any quality bike grease works. I pressed the bearings into the grease one by one, making sure they sat in there good. Then more grease on top of them—you want them swimming in it. Excess will squeeze out when you tighten everything, which is fine.

Getting the Adjustment Right

This part took me four tries. You thread the cone on carefully so you don't displace bearings, snug it down while spinning the axle to seat everything, then back it off maybe a quarter turn. Hold that cone with one wrench and tighten the locknut against it with another. Here's the trick I finally learned: it needs to feel slightly loose before you tighten the locknut, because tightening the locknut pulls everything tighter. After tightening, I check for play by wiggling the axle—there should be zero play but it should spin freely. Too tight and it'll bind and wear out fast. Too loose and you get wobble. I kept loosening the locknut, adjusting the cone a tiny bit, and retrying until it felt right. Took me maybe fifteen minutes of fiddling.

Questions people ask me