A customer brought in a Shamal Ultra wheel for service.
They got it from an acquaintance, apparently,
and the previous owner had used it pretty extensively,
so they requested a full service and overhaul if needed.
The front wheel only had a slight wobble and the hub showed no issues.
The rear wheel, though...
The hub rotation had a rough, grinding sensation.
I removed the freewheel body.
The grease is completely depleted and it's all dried out.
Even with the freewheel body removed, there's still that grinding sensation,
so the bearings in the hub body definitely have a problem.
All the spoke bases on the cassette side show chain drop marks,
but since there's no bending or fraying,
I won't replace them.
Earlier I noted that even with the freewheel body removed,
there was still that grinding sensation in the hub,
but that doesn't necessarily mean the freewheel body itself is fine.
Right below the outer bearing of the freewheel body,
the hub axle was discolored brown.
It wasn't really rust transfer, just rust seepage from the bearing
that wiped clean without any problem.
I replaced the outer bearing of the freewheel body.
When I sprayed parts cleaner, rust seepage came pouring out.
Surprisingly, the ball races had no pitting
(though there were clean wear marks).
The retainer bearing was cloudy, so I replaced it.
↑Particularly, one ball was damaged, so I replaced it.
That's probably what was causing the grinding sensation.
If they'd kept riding like that, it definitely would have developed into real pitting.
We caught it just in time.
For the freewheel pawl spring,
my policy is "replace immediately unless it's like new."
It's not an expensive part, but if it fails roadside,
the consequences are pretty serious.
Cleaned it up.
The rear wheel had runout all over the place, but since the rim itself isn't dented,
I should be able to true it carefully to like-new condition.
And actually, I did.
However, the rim wear from braking is quite significant,
so the rim will likely reach the end of its life before the hub does.
It should be good for a few more years, though.
It's possible the previous owner was using a different front wheel
as the match for this rear wheel.
The condition of the rim and hub wear between front and rear are dramatically different.
They got it from an acquaintance, apparently,
and the previous owner had used it pretty extensively,
so they requested a full service and overhaul if needed.
The front wheel only had a slight wobble and the hub showed no issues.
The rear wheel, though...
The hub rotation had a rough, grinding sensation.
I removed the freewheel body.
The grease is completely depleted and it's all dried out.
Even with the freewheel body removed, there's still that grinding sensation,
so the bearings in the hub body definitely have a problem.
All the spoke bases on the cassette side show chain drop marks,
but since there's no bending or fraying,
I won't replace them.
Earlier I noted that even with the freewheel body removed,
there was still that grinding sensation in the hub,
but that doesn't necessarily mean the freewheel body itself is fine.
Right below the outer bearing of the freewheel body,
the hub axle was discolored brown.
It wasn't really rust transfer, just rust seepage from the bearing
that wiped clean without any problem.
I replaced the outer bearing of the freewheel body.
When I sprayed parts cleaner, rust seepage came pouring out.
Surprisingly, the ball races had no pitting
(though there were clean wear marks).
The retainer bearing was cloudy, so I replaced it.
↑Particularly, one ball was damaged, so I replaced it.
That's probably what was causing the grinding sensation.
If they'd kept riding like that, it definitely would have developed into real pitting.
We caught it just in time.
For the freewheel pawl spring,
my policy is "replace immediately unless it's like new."
It's not an expensive part, but if it fails roadside,
the consequences are pretty serious.
Cleaned it up.
The rear wheel had runout all over the place, but since the rim itself isn't dented,
I should be able to true it carefully to like-new condition.
And actually, I did.
However, the rim wear from braking is quite significant,
so the rim will likely reach the end of its life before the hub does.
It should be good for a few more years, though.
It's possible the previous owner was using a different front wheel
as the match for this rear wheel.
The condition of the rim and hub wear between front and rear are dramatically different.