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New pump ruined my valve??

Old 10-12-12, 02:05 PM
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vol
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New pump ruined my valve??

I bought this new Topeak Road Morph G Bike Pump with Gauge. There is no instruction at all, so I reversed the head to fit my schrader valve, probably wrongly because the tip of the pump head (with 4 little holes for schrader valve) was completely protruding outside of the outer ring of the pump head. When I insert the head to the valve, air immediately was released from my tire in unusually high speed before I could lock it in; worse: the valve was pushed toward inside of the tire!! Thank God it didn't completely get inside the tire and become out of sight!! But the tire was completely flat.

So here is my first question (being ignorant about bike mechanics): Is the valve supposed to be movable on the tube? Isn't it supposed to be fixed on the tube? Is it normal or not normal that it was pushed inside the tube, possibly completely inside (out of view) and become a loose object in the tube? Or did I somehow damaged the valve and broke it from the tube with the new pump head?

After the tire became flat, I panicked because I planned to ride my bike later today! So I pulled the valve out as much as I could, and used my good old floor pump to pump the tire. Air was leaking around the valve while I pumped, but after I pulled it out a bit further, and the tire became fully pumped, it seems not leaking any more... at least as of now.

(I also just figured out the likely correct way to install the pump head for schrader valve. But Topeak is to be blamed for selling this without any instruction whatsoever.)

I'm afraid to ride the bike in this condition. Will it leak again from around the contact of the valve and tube?

Need explanation and help asap so I can ride my bike today Thanks in advance.
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Old 10-12-12, 02:10 PM
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I had a front tire blow out this morning.

Used the same pump with no problems.
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Old 10-12-12, 02:20 PM
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I recently bought the same pump and no problems. I've only used it on presta valves though.

I think the valve went inside because most of the air was lost. That would normally happen to my tires that use shrader valves. I think you should be fine.
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Old 10-12-12, 02:22 PM
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I guess my main questions is, is the valve supposed to be completely loose and separated from the tube, so that it could be pushed completely inside the tube as a loose object? Is it just the air pressure that keeps it "fixed" on the tube"? Or does it mean the valve has been broken from tube as a damage? (excuse my ignorance)
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Old 10-12-12, 02:23 PM
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I don't have that pump, but in general, if you are not sure of how to use a product and you use it anyway and cause damage, that is your fault - not the product. THey can be faulted for not including instructions, but you are responsible for any damage caused by improperly re-assembling and using the pump.

The good thing is, there is likely no damage. Valves push up inside the rim and tire allt he time. If the valve came back out after pumping and is now holding air, then the tube is likely intact. If there was some damage to the tube then air would be leaking out. CHeck the pressure before you ride to make sure it hasn't dropped significantly, and if it still pressurized, you are good to go.

The solution to your problem is (1) is to push and hold the valve in place by pushing your thumb into the tire. Once there is some pressure in the tire you usually don't have to do this. THis is one of the main advantages of presta valves - the stem is threaded so you can hold the valve in palce with a nut. And (2) go to the shop where you got the pump and ask them for directions on how to use it. Better to do this sooner than latter so you don't get a flat ojnt he road and sit there like a fool in a pile of pump parts while it starts to rain.

THe Morph pumps are extremely popular (they have sold tens or hundreds of thousands of them) and yours is the first time I have heard this problem. So I am pretty sure this was not the pumps fault, but yours. To paraphrase an old automobile joke: "The problem with your pump is that there was a loose nut pushing on the handle"
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Old 10-12-12, 02:26 PM
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Valves;



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Old 10-12-12, 02:36 PM
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Oh - and if you go to the Topeak website, there appears to be a video on how to set the pump for your valve style. It's not there fault that you didn't look for info before rushing ahead. Wouldn't it have been easier to spend your time looking up the info than to post questions on how to fix damage caused by not looking up the info?
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Old 10-12-12, 02:42 PM
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Thanks. Yes, it may be because the first time I installed the pump head incorrectly. The factory default was for presta valve. When I opened the head and reversed it, I did it incorrectly, and positioned the pin-like head toward outside, so it was completely sticking out of the outer ring of the pump head, like a needle pointing out. I then inserted this "needle" into my bike valve, and it immediately released most of the air in the tube, and the valve went inside. Later on I figure out the "pin" should point inside and nothing should stick out of the outer screw ring of the pump head. But Topeak should really include a simple instruction.

I am just worried air will leak from around the valve when I starting riding. I had never had the valve pushed inside the tube, and my tire had never leak air like today ever since I bought it 2+ years ago. It's a newbie's fear because I have never taken out a tube to see how the valve "connects" to the tube.
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Old 10-12-12, 02:57 PM
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Thanks for mentioning the video. I found the video and it helped (actually, it's the picture at the end of this video that helped: it showed my second-time installation of the pump head was correct).
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Old 10-13-12, 09:07 AM
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You said:

I am just worried air will leak from around the valve when I starting riding. I had never had the valve pushed inside the tube, and my tire had never leak air like today ever since I bought it 2+ years ago. It's a newbie's fear because I have never taken out a tube to see how the valve "connects" to the tube.

I say:

Get a new tube and chalk the cost of that up to the learning experience and cut the drama and "worry." I'm not saying that to be mean. I am saying it so you can also learn that bike maintenance and repair is not about drama. Don't put it in that category and you will learn and feel comfortable about it quicker. There is no mystery or drama involved. Here is a great chance to learn from a mistake, which is how a lot of this stuff is learned by all of us.
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Old 10-13-12, 10:26 AM
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I am learning to love the Presta valve style, now that I have a schraeder adapter so I can use the el-cheapo press-on pressure gauge with it.
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Old 10-13-12, 11:04 AM
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Bottom line not the pump glad you got it correceted.
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Old 10-13-12, 11:26 AM
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I found this if it helps

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Old 10-13-12, 11:29 AM
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Originally Posted by onespeedbiker
I found this if it helps

Good One.
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Old 10-13-12, 11:39 AM
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I have ridden my bike last night without problem . My mistake was to only reversing the "pin" part but not the other little part, so the "pin" stuck out. Using that pin to insert the valve without the pump head covering of course caused only profuse leaking of air without pumping in air! I have since watched several videos about changing the tube and understood why the valve adapter was pushed in.

Glad my tube is fine, and the new pump seems to deserve its reputation. But Topeak is still to be blamed for lack of instructions. You can see similar complaints in the customer reviews at Amazon.com.

Thanks all for your comments and for taking the time to read my long first post!
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Old 10-13-12, 05:51 PM
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Glad it is all working out.

Make sure you have become comfortable with using that pump before you need to out on the road. And if you have a working floor pump you should use that when you are at home and save the mini-pump for emergencies.
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Old 10-13-12, 06:42 PM
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It seems Topeak assumes everyone knows how a pump works by not including instructions. But how do they think someone buying thie first pump knows?

Anyway glad you got it right now.
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Old 10-13-12, 08:32 PM
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Thanks again. This forum is emergency clinic for me
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Old 10-13-12, 08:50 PM
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Well, they should assume that no matter how easy to use the pump is, always some smart pants wont figure it out (dont take it personal OP, just generalizing). Probably the guys arent printing anything no more just to save some money.

I use only presta valves and what i have done all the time is just cut the crappy chuck all the pumps have and buy a quality silca one, 20 bucks is a lot but those are pretty straight forward, no levers no nothing just lose the valve, put the chuck in place and inflate. Even the crappiest pump will work just fine using those chucks and the internal rubber may last probably 10 years before you need a new one. My pump is 15 years old and I have one that is even older and they work just fine using the silca chuck. Some guys buy pumps each 4 years, i cant understand why...

Personally all the pumps in the market put those chucks with levers and zillion of parts that are just useless and then you have unhappy customers because the pieces crack, do not hold the pressure etc. Nothing as simple as the silca chuck.




Originally Posted by StanSeven
It seems Topeak assumes everyone knows how a pump works by not including instructions. But how do they think someone buying thie first pump knows?

Anyway glad you got it right now.
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Old 10-13-12, 09:02 PM
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How have you been riding for 2 years and 1100 BF posts without ever figuring out what to do about changing a tire?
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Old 10-13-12, 11:35 PM
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Originally Posted by rebel1916
How have you been riding for 2 years and 1100 BF posts without ever figuring out what to do about changing a tire?
I have never had any accidents. Never had to change a tire, never had a flat. I'm fairly careful in avoiding bad road conditions, and rarely carry heavy loads on my bike. Maybe that helped keeping my tires from damage? Or maybe my tire is of good quality (Kenda K192, how's its reputation?)? I have always wanted to take some free classes about bike maintenance/repair but never got time so far.

Last edited by vol; 10-14-12 at 12:02 AM. Reason: typo
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Old 10-13-12, 11:49 PM
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Originally Posted by vol
...never had a flat.
DON'T EVER SAY THAT. Now you're going to get a flat very soon. That's how it works in my experience
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Old 10-14-12, 12:30 AM
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Originally Posted by AlphaDogg
DON'T EVER SAY THAT. Now you're going to get a flat very soon. That's how it works in my experience
I'd count yesterday's air leaking while trying the new pump as the "due" flat. That's truly the first time ever my tire had been flat. Now I should have another 2 years without accident
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Old 10-14-12, 05:45 AM
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Take the wheel off the bike. Deflate it. Take the tire off the rim. then remount the tire, reinflate, and reinstall the wheel. you owe it to yourself to do it with no pressure so you know how to do it. It's easy, but the first time may take a few minutes. You do not need a class.
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Old 10-14-12, 10:37 AM
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Originally Posted by rebel1916
Take the wheel off the bike. Deflate it. Take the tire off the rim. then remount the tire, reinflate, and reinstall the wheel. you owe it to yourself to do it with no pressure so you know how to do it. It's easy, but the first time may take a few minutes. You do not need a class.
Thanks for the suggestion. Yes I saw on the videos it's easy. But for an inexperienced newbie, there is always the worry that I may mess up something in the procedure and don't put everything back completely right, then the fear of accident as a result. The thought that "If I didn't unnecessarily dissemble and resemble the parts, I wouldn't have had the accident" prevails. It's better to experiment with an extra bike that I don't use.
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