how to keep pump chuck from blowing off valve stem?
Moderator: robbosmans
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Get a new gasket. Don't use the new gasket on threaded valves as they will ream out the gasket.
Is this a Silca head?
Is this a Silca head?
I bought a 10-pack of pump heads for like 3usd. You fit them to most pump hoses. After 4 years of pumping 5 bikes/vehicles (many on latex tubes). I'm still on the first head. Works perfectly.
Seems only the head that came with the pump was crap.
Seems only the head that came with the pump was crap.
New gasket.
BTW; for SKS, a new head is actually easier to find and ridiculously cheap.
BTW; for SKS, a new head is actually easier to find and ridiculously cheap.
Get a new pump head (chuck). Unscrew/Cut off the old one, jam or screw the new one on. https://amzn.to/2HeqPNj https://amzn.to/2KHtAch
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- Posts: 419
- Joined: Mon Jun 13, 2016 4:18 pm
On my '80s vintage Silca floor pump, I removed the pump head from the hose, got a piece of velcro strap from a fabric store, cut a strip about 12"/30cm long with a hole punched for the pump head valve stem. I could then press the strap ends together over the tire to hold the head on the tube valve.
If you have an old Silca pump with the black gasket, get the new red 242 gasket. It's a huge improvement.
https://silca.cc/products/silca-242-gas ... sta-chucks
Here's the other thing I learned about Silca pumps/gaskets after using one for 30+ years. You aren't supposed to smash the chuck all the way down onto the valve stem. It should just sit on top. The narrow part of the valve pokes through and the wider part of the valve stem perfectly mates to the inner curve of the gasket. If you poke it all the way through you start reaming out your gasket, especially with threaded valves. The other way to go is just to replace your gasket every 2-3 years and not worry about technique.
I also only buy Michelin Airstop tubes with smooth valve stems.
https://silca.cc/products/silca-242-gas ... sta-chucks
Here's the other thing I learned about Silca pumps/gaskets after using one for 30+ years. You aren't supposed to smash the chuck all the way down onto the valve stem. It should just sit on top. The narrow part of the valve pokes through and the wider part of the valve stem perfectly mates to the inner curve of the gasket. If you poke it all the way through you start reaming out your gasket, especially with threaded valves. The other way to go is just to replace your gasket every 2-3 years and not worry about technique.
I also only buy Michelin Airstop tubes with smooth valve stems.
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- Posts: 345
- Joined: Wed Jun 16, 2010 10:58 pm
When my Silca pump finally gave out after 30+ years I cut the chuck off before throwing the rest away, I guess now it going on my new pump. ThanksAJS914 wrote: ↑Mon Aug 19, 2019 4:31 pmIf you have an old Silca pump with the black gasket, get the new red 242 gasket. It's a huge improvement.
https://silca.cc/products/silca-242-gas ... sta-chucks
Here's the other thing I learned about Silca pumps/gaskets after using one for 30+ years. You aren't supposed to smash the chuck all the way down onto the valve stem. It should just sit on top. The narrow part of the valve pokes through and the wider part of the valve stem perfectly mates to the inner curve of the gasket. If you poke it all the way through you start reaming out your gasket, especially with threaded valves. The other way to go is just to replace your gasket every 2-3 years and not worry about technique.
I also only buy Michelin Airstop tubes with smooth valve stems.
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com