A customer dropped off a Racing Zero for me.
I forgot to photograph the rear wheel as a whole,
but I have both front and rear wheels in for service.
The customer wants hub inspection and truing,
and mentioned the internals are probably black cone-type, but if needed, they're okay with switching to silver cone.
I felt some rubbing on the inside of the cover,
but it turned out to be lint tangled in there.
↑ skipping ahead in time, but here's the after
It's equipped with a black cone-type setup with a grease guard film on the hub shell.
The front hub rotation has a slight grinding feel,
but since there's no pitting, I didn't replace the ball races on either hub.
Unless there's obvious pitting damage, replacing bearing balls and cones isn't cost-effective.
Even with new cones and locknut, if proper bearing contact hasn't developed yet,
the rotation will feel slightly gritty initially.
Since neither front nor rear hub shows developed bearing contact yet,
I decided it's better to let proper use develop the contact naturally over time.
I used a cone seating tool on both front and rear hubs.
Neither felt like they pressed in further,
and the front hub showed no lateral runout in its initial state,
and still no runout even after adjusting bearing contact with the tool.
I didn't check the rear hub's initial runout,
but by the time I finished the full overhaul, it had a slight runout.
I'm not sure if that happened during the work.
before
after
before
after
I cleaned up the hubs too.
The areas on the rear hub without black anodizing can get really dirty and become impossible to clean if neglected,
but this time I was able to get it clean.
before
after
The freewheel pawl return spring showed no deformation, so I didn't replace it.
Anyway, the customer is switching the freebody to a Campagnolo version,
so I intentionally didn't grease around the ratchet mechanism.
I did apply a light coat of oil to prevent rust on the pawls.
About the rear hub runout I mentioned earlier—
it's at the level of nitpicking, like being off by one sheet of paper.
Depending on the centering gauge, it would pass.
Both front and rear wheels showed virtually no runout.
I forgot to photograph the rear wheel as a whole,
but I have both front and rear wheels in for service.
The customer wants hub inspection and truing,
and mentioned the internals are probably black cone-type, but if needed, they're okay with switching to silver cone.
I felt some rubbing on the inside of the cover,
but it turned out to be lint tangled in there.
↑ skipping ahead in time, but here's the after
It's equipped with a black cone-type setup with a grease guard film on the hub shell.
The front hub rotation has a slight grinding feel,
but since there's no pitting, I didn't replace the ball races on either hub.
Unless there's obvious pitting damage, replacing bearing balls and cones isn't cost-effective.
Even with new cones and locknut, if proper bearing contact hasn't developed yet,
the rotation will feel slightly gritty initially.
Since neither front nor rear hub shows developed bearing contact yet,
I decided it's better to let proper use develop the contact naturally over time.
I used a cone seating tool on both front and rear hubs.
Neither felt like they pressed in further,
and the front hub showed no lateral runout in its initial state,
and still no runout even after adjusting bearing contact with the tool.
I didn't check the rear hub's initial runout,
but by the time I finished the full overhaul, it had a slight runout.
I'm not sure if that happened during the work.
before
after
before
after
I cleaned up the hubs too.
The areas on the rear hub without black anodizing can get really dirty and become impossible to clean if neglected,
but this time I was able to get it clean.
before
after
The freewheel pawl return spring showed no deformation, so I didn't replace it.
Anyway, the customer is switching the freebody to a Campagnolo version,
so I intentionally didn't grease around the ratchet mechanism.
I did apply a light coat of oil to prevent rust on the pawls.
About the rear hub runout I mentioned earlier—
it's at the level of nitpicking, like being off by one sheet of paper.
Depending on the centering gauge, it would pass.
Both front and rear wheels showed virtually no runout.