How to Repair a Bicycle Pump 

As mentioned before, O-Ring Grease, Silicone Grease, Di-Electric Grease (which is Silicone based) is a better choice for O-Rings as Petroleum-based lubricants eats up Rubber O-Rings. I use “Parker” O-Ring Lubricant or Di-Electric Ignition Grease or Dow-Corning DC4 (Now Dupont Molykote 4) as it will not dissolve the o-ring.

Spot on! Many thanks. The bit about WD-40 was insightful. I believe it might be behind clogging the shaft with loosened gunk and rust. Multiple applications of grease also help pick out the stray gunk that the turpentine doesn't pick out.

Thanks for this video! While my issue was with a different pump that was leaking pressure around the top, this video facilitated my being able disassemble my pump. In my case, the internal piston-end had come mostly unscrewed from the piston shaft. I was able to clean it and re-attach it, adding a bit of Teflon plumbers' tape at the threads for a better seal. And since I had it apart, it's all lubed up again with Teflon grease per your instructions and seems to both hold pressure and be a bit smoother. Thanks!

nice and easy, in quarantine times! great video cheers

Thanks for the tutorial,I managed to repair my bicycle hand pump with a simple grease and it's working fine again. The o ring was still in good shape.

Thanks buddy. Got a Blackburn track pump, more than 10 years old and it had failed just like in your vid. I'd opened it and couldn't see anything to fix - but with a clean and some grease all good again. Power of RU-vid!

I liked your video because the construction of the pump despite the different handle and color of the stem is exactly as one of mine. I took it apart before I looked up your video. It had bits in grease, so I was not sure if it was on purpose or not. I opened it up because it was not pumping anything. After watching your video, I concluded that the gritty bits where not by design and wiped them off, and I took the rubber ring off. I was absolutely sure I had a syringe somewhere with thermal paste for CPU but could not find it, so after cleaning off the ring, I just added a hand cream. I looked it up, the main ingredient was glycerine aka solidoil. Anyway, when it comes how you describe how the grease should be applied, if done the way you advise, the grease applied to the bottom of the rig does not do anything, but the one applied to the grove of the ring does fill the important bit between the ring and the plunger but applying it excessively is counter productive because it gets removed upon insertion back into stem / cylinder / column, call how you like it. So general advice, once you removed ring and wiped everything. I used a holy sock to do that btw, first to wipe the ring and plunger, then put the sock on the plunger and stuck it in the column. Anyway, so back to general advice. Grease the groove of the ring to accommodate the ring but put the excess inside the column. I clearly noticed how pump regained ability to push air as the grease got distributed along the inside of the column. Pardon my poor inglish.

great! thanks much for this, now i'll be able to fix my manual bike pump 👍❤️

Thank you. I put loads of grease under and over the O ring but it is still sort of too easy to push and not really maintaining pressure. Either I have a leak somewhere (more grease, perhaps, on more joints) or perhaps I need a new O ring.

Thanks Buddy. successful repair!

Works great, love it!

I have a cheap back trails floor pump. It has no lubricating hole and when I disassemble there is no oil or grease on the o ring ;it is dry. It has started to vibrate like it needs grease. Is it throw away? I guess I can replace The o ring and give it a try.

Tip: for better results with the rust, try using toothpaste and rub it using aluminum foil. It works for me.

Bruh help me my pump was working literally 5 seconds ago then i dropped the end part on the floor and now all of a sudden when u push down on the pump it dosent pump it just goes down and up wtf help me

Brake cleaner will clean out the old grease nicely

Awesomeness!

The ultimate care of a bicycle hand pump is to maintain the pump by greasing it now and then.

wow..THANKS 4 pumps THANKS

👍

When I try to pump air..back air pressure from tyre tube will lift the pumping handle i.e one way valve is not working, where in pump it's located?how to solve this?

My pump came out at the bottom when pumping hard now it’s jammed at the top any idea what’s wrong ?

Hi, i have a o ring that just seems way too loose as it just goes into tube and does nothing so i figure replace that or put a expanded behind it like a oil ring on a piston. BUT how does the 1 way action work? Is there a valve in the bottom that need servicing? and how to do that please?

Hey, me again. I have run into the same issue, this time I cant resolve my problem the way I have been. I have found out the problem isnt in thr hose but somewhere in the pump. It is resisting from putting out any air. It doesnt even get passed the chamber. Have you had any problems like this one? Note: when I use my pump it isnt for a bike and I max it out [160 psi])

Pls my pump takes in air but hard to pump the air out likes it's not coming out wat should I do

What is the BRAND and PART NUMBER of your [ump? I want to get one like yours, BOTH oof mine came apart and had NO screws holding rgw top or bottom, AND they did NOT have a good O ring but a crapy leather type sleeve

Just be sure to use a silycon base grease like Dow33. Oil base grease and wd-40 will deteriorate the oring and it will need to be replaced very quickly

Would be GREAT if IF or WHEN you found the replacement O ring you would give the Manufacture and part number of it OR dimensions of it

Silicone grease is best for O-rings. Other effective cleaning agents include petrol/gasoline, engine degreaser spray, and brake cleaner. WD-40 isn't really an oil - it is a cleaning agent and water displacer (hence the name), and only contains a small proportion of lubricant.

👍👍

My pump is giving me some "recoil". Meaning, when i pump, the handle comes all the way back without any effort. Any hints on how to solve that?

You’re really helpful

Vasir name enna jee

What kind of grease is used to stop the grinding sound.

My tube got sliced off. Is there a repair or just have to buy a new one?

use grease. I used wd-40 and it started pushing and leaking wd-40 out the pump and into my bike tires.

Bhai ya kon sa gatar ha

thanks for the video bruh Shalom

Im having a problem where mine wont pump any air and it does even show up on the gauge, almost as if the air isnt even leaving the pump chamber

My pump is leaking out of the push handle

Is your real job at NPR??

I've used WD-40 many times and it's fine...

why dosent my bike pump

My pump is super easy to raise and lower and I can fart harder than this thing pumps. Brand new, only used twice.

Please talk in hindi

better to use silicone lube on o-rings

No good repair