Air in tyres

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Clairehyland

New Member
Hi. Purchased a carerra e road bike crossover. For the love of money I can not put air in the tyres. Pump I have is a Halfords advanced pump with gauge but how do you put air in?... have to squat anything ?. Help thank you
 

mjr

Comfy armchair to one person & a plank to the next
Basic guide, but if your pump head has only one hole, you might have to disassemble/reassemble it to switch valve type:


View: https://www.youtube.com/watch?v=az5Nj_UhyrE

It looks like your pump may be https://www.halfords.com/cycling/bi.../halfords-advanced-road-hand-pump-228006.html which says it has one hole that autoadjusts. I've sometimes found that such heads need a couple of pumps before they detect and adjust.
 

Cycleops

Legendary Member
Location
Accra, Ghana
Your pump should be able to fit Schrader and presta valves, the presta will need the little nut unscrewing to accept air.
Could be you need to switch types as above.
 

Paulus

Started young, and still going.
Location
Barnet,
Hi. Purchased a carerra e road bike crossover. For the love of money I can not put air in the tyres. Pump I have is a Halfords advanced pump with gauge but how do you put air in?... have to squat anything ?. Help thank you
This may sound silly, but if you have presta valves, are you undoing the little locknut on top of the valve stem? This releases the valve itself.
1605085696290.png

Also, have you changed the innards of the pump to the correct bits for Presta. If you unscrew the nossell, the bit in the middle will come out and you can turn it around for the other fitting.


View: https://youtu.be/dTnw5wWtACg
 
Last edited:

raleighnut

Legendary Member
This may sound silly, but if you have presta valves, are you undoing the little locknut on top of the valve stem? This releases the valve itself.
View attachment 557590
Also, have you changed the innards of the pump to the correct bits for Presta. If you unscrew the nossell, the bit in the middle will come out and you can turn it around for the other fitting.


View: https://youtu.be/dTnw5wWtACg

Also note once you have undone the little locknut a bit you need to 'tap' the top of it with a finger to unstick the valve from it's rubber seat or it won't allow air in.
 

mjr

Comfy armchair to one person & a plank to the next
True, most track pumps have a universal head, the OP hasn't got a track pump, but one of these.
View attachment 557762
Which is the one I linked, which claims to auto-adjust without you taking it to bits — is the description on the Halfords page wrong, then?
 

T4tomo

Legendary Member
Having established the OP's pump auto adjusts for value type, I strongly suspect its a case of not undoing the presta locknut before attempting to inflate, a not uncommon mistake for people encountering them for the for the firs time.
 
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Skibird

Senior Member
Hi. Purchased a carerra e road bike crossover. For the love of money I can not put air in the tyres. Pump I have is a Halfords advanced pump with gauge but how do you put air in?... have to squat anything ?. Help thank you
Off topic I know, but where are you from Claire, as I have a friend with the same name as you and was wondering if you were her?
 
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