A customer brought in a Ksyrium SL wheelset for service.
They requested an overhaul and inspection.
About the overhaul — if someone hasn't gone out of their way to swap in non-OEM bearings (including ceramic upgrades), it's not easy to damage Mavic bearings.
Since there was no visible bearing wear, the overhaul ended up being just a cleaning and oil application to the rear hub's freehub mechanism.
Done.
The oil had some dirt in it, but it hadn't completely dried out.
For the inspection, both wheels had slight runout despite being centered perfectly. The rear wheel was loose, so I tightened it slightly beyond just truing.
↑This is the cosmetic-spoke Ksyrium SL.
Next up is a different vintage Ksyrium SL.
This one is mounted on his wife's bike.
↑The oil had completely dried out.
If used a bit longer, you'd typically see marks from the ratchet pawls of the freehub body scoring against the hub shell's right end, outside the pawl seats. But after cleaning, I didn't find any.
During inspection, the front wheel had only a paper-thin centering error, but the rear wheel had substantial runout toward the freehub side.
So close! I was hoping to witness the impressive feat of two pairs of Ksyrium wheels (four total) continuing without runout.
The amount of rear-side runout is significant enough that it definitely started out off-center toward the freehub side, even accounting for wear from use.
↑This is the cosmetic-spoke Ksyrium SL.
Its nipples use the same wrench size as the original Ksyrium, while the first wheelset has larger nipples.
They requested an overhaul and inspection.
About the overhaul — if someone hasn't gone out of their way to swap in non-OEM bearings (including ceramic upgrades), it's not easy to damage Mavic bearings.
Since there was no visible bearing wear, the overhaul ended up being just a cleaning and oil application to the rear hub's freehub mechanism.
Done.
The oil had some dirt in it, but it hadn't completely dried out.
For the inspection, both wheels had slight runout despite being centered perfectly. The rear wheel was loose, so I tightened it slightly beyond just truing.
↑This is the cosmetic-spoke Ksyrium SL.
Next up is a different vintage Ksyrium SL.
This one is mounted on his wife's bike.
↑The oil had completely dried out.
If used a bit longer, you'd typically see marks from the ratchet pawls of the freehub body scoring against the hub shell's right end, outside the pawl seats. But after cleaning, I didn't find any.
During inspection, the front wheel had only a paper-thin centering error, but the rear wheel had substantial runout toward the freehub side.
So close! I was hoping to witness the impressive feat of two pairs of Ksyrium wheels (four total) continuing without runout.
The amount of rear-side runout is significant enough that it definitely started out off-center toward the freehub side, even accounting for wear from use.
↑This is the cosmetic-spoke Ksyrium SL.
Its nipples use the same wrench size as the original Ksyrium, while the first wheelset has larger nipples.