Our shop is currently using a floor pump called
ONE from SAPO (サポ), an Italian manufacturer,
but this pump has its hose outlet right at ground level,
and the other day while I was pumping air into a customer's wheel,
the gauge needle kept dropping, which seemed odd,
and then there was a loud pop like the tire had burst, and the pump broke.
The cause was a hose rupture.
So I trimmed the hose down by the length shown in the image above
But replacement hose parts are available,
so I was thinking I'd write about that
（the reason I haven't thrown away the cut hose end is for this purpose）,
and then a customer left me the same pump in a different color.
Wow, they've got a gross sticker on it!
（not on the pole, just to be clear）
I would never put one of these on a wheel myself.
Whether you stick it on a wheel, a frame, or a floor pump is your business,
but I'd personally recommend the bathroom door knob.
Anyway
it's got the same rupture pattern!
If I see a few more cases like this, I'm gonna start calling it the "SAPO pump explosion"
I removed the hose.
The female end with the 2-sided grip is 14mm width (left in the image),
and the male end with the 6-sided grip is 13mm width (right in the image).
I cut the hose a bit.
I'm not sure if it'll help,
but I decided to protect the hose with heat shrink tubing.
The image above shows the first layer,
and this is the second layer.
I installed the hose back on.
From here on, I'm explaining with my own pump,
but sometimes when you remove the hose, the check valve ball can pop right out.
Since it's not held in place by anything,
be careful not to forget to set it back when reassembling.
I forgot to set it back
and handed the pump to the customer anyway
nooooooooooooo
ONE from SAPO (サポ), an Italian manufacturer,
but this pump has its hose outlet right at ground level,
and the other day while I was pumping air into a customer's wheel,
the gauge needle kept dropping, which seemed odd,
and then there was a loud pop like the tire had burst, and the pump broke.
The cause was a hose rupture.
So I trimmed the hose down by the length shown in the image above
But replacement hose parts are available,
so I was thinking I'd write about that
（the reason I haven't thrown away the cut hose end is for this purpose）,
and then a customer left me the same pump in a different color.
Wow, they've got a gross sticker on it!
（not on the pole, just to be clear）
I would never put one of these on a wheel myself.
Whether you stick it on a wheel, a frame, or a floor pump is your business,
but I'd personally recommend the bathroom door knob.
Anyway
it's got the same rupture pattern!
I removed the hose.
The female end with the 2-sided grip is 14mm width (left in the image),
and the male end with the 6-sided grip is 13mm width (right in the image).
I cut the hose a bit.
I'm not sure if it'll help,
but I decided to protect the hose with heat shrink tubing.
The image above shows the first layer,
and this is the second layer.
I installed the hose back on.
From here on, I'm explaining with my own pump,
but sometimes when you remove the hose, the check valve ball can pop right out.
Since it's not held in place by anything,
be careful not to forget to set it back when reassembling.
I forgot to set it back
and handed the pump to the customer anyway
nooooooooooooo