Bike Pump, Upgraded Mini Portable Bicycle Pump, Foot Bike Pump with Pressure Gauge, Tire Inflator Device, Compatible Universal Presta and Schrader Double Valve Bicycle Air Pump (Blue)

hey viewers have you ever been curious about how a dual Bell pump head works why air goes in the valve stem it doesn't just come out the other side I'm going to show you what's inside of here and show you how it works I'll even show you a way that you can sometimes fix a do about pump head like this that leaks to make it easier to work on I'm going to disconnect it from the pump so just loosen this part here and I just slide that out like that now what's holding this pump head mechanism together is this one pin right here so I need to drive this out so I'm going to use my drill press vise here just with a little bit of opening there use a punch and a hammer to tap it out [Music] like that now they have the pin out I'm go ahead pull this part just pull that lever off like this and the parts in here I need to need to push out so I'm gonna do is push in from the the little bow stem holes h