I was in the garage in the middle of rebuilding an old hybrid bike to resemble a so-so mountain bike when a few neighbors dropped in asking for me to tune up their bikes. Pulling mine off the stand I gave their bikes a quick tuneup and in the middle of pumping up the tire my floor pump just flat stopped working. There is no resistance to going up and down, and it doesn't blow any air. I pulled the top off of it and everything appears to be intact. I blew through it and air comes out the valve. Any idea what could have happened? Can it be fixed?
Just a plain Jane 'Specialized' brand floor pump with gage and dual sided head.
Well, take it apart and see what the piston cup is doing. These things fail mainly because they get flaming hot when inflating a tire from compression work. Then the piston cup falls apart. You should be able to get a new one.
Just a plain Jane 'Specialized' brand floor pump with gage and dual sided head.
Well, take it apart and see what the piston cup is doing. These things fail mainly because they get flaming hot when inflating a tire from compression work. Then the piston cup falls apart. You should be able to get a new one.
That's what I tried to do... but I didn't see anything amiss, nor did any parts fall out when I tipped it over. I can't get the body off of the base to see if there's anything inside, so I'm not sure if I'm seeing the bottom of the tube, or something else when I look down inside.
> what kinda pump ? Just a plain Jane 'Specialized' brand floor pump with gage and dual sided head.
Well, take it apart and see what the piston cup is doing. These things fail mainly because they get flaming hot when inflating a tire from compression work. Then the piston cup falls apart. You should be able to get a new one.
That's what I tried to do... but I didn't see anything amiss, nor did any parts fall out when I tipped it over. I can't get the body off of the base to see if there's anything inside, so I'm not sure if I'm seeing the bottom of the tube, or something else when I look down inside.
I have an ancient Zefal Husky (for which I just ordered a jitensha.com Hireme HP-20 pump head @ $45.00! because the Silca pump head just didn't cut it) and the check valve failed, causing the pump to retract from existing tire pressure. I don't know if that's the same problem you're experienceing, but if the cylinder gasket is oiled and intact you might get access to the check valve underneath. On mine there was a 7/8" head bolt holding in the check valve and a spring. It required a socket to access because a crescent wrench wouldn't fit. That area had become a rusty condensate reservoir and the spring needed to be stretched out and the whole thing greased. Otherwise, boldly disassemble anything that looks remotely like it might come apart.
Just a plain Jane 'Specialized' brand floor pump with gage and dual sided head.
Quoted message said:
Quoted message said:
Well, take it apart and see what the piston cup is doing. These things fail mainly because they get flaming hot when inflating a tire from compression work. Then the piston cup falls apart. You should be able to get a new one.
Quoted message said:
That's what I tried to do... but I didn't see anything amiss, nor did any parts fall out when I tipped it over. I can't get the body off of the base to see if there's anything inside, so I'm not sure if I'm seeing the bottom of the tube, or something else when I look down inside.
The piston cup is attached to the end of the pump shaft that goes up and down. If the cup is fried (no longer fits snugly into the tube) it needs a new one. One way to fix it temporarily is to make the cup (if it is leather) wet. It will get soft and expand to do the job, but only temporarily.
> what kinda pump ? Just a plain Jane 'Specialized' brand floor pump with gage and dual sided head.
Well, take it apart and see what the piston cup is doing. These things fail mainly because they get flaming hot when inflating a tire from compression work. Then the piston cup falls apart. You should be able to get a new one.
That's what I tried to do... but I didn't see anything amiss, nor did any parts fall out when I tipped it over. I can't get the body off of the base to see if there's anything inside, so I'm not sure if I'm seeing the bottom of the tube, or something else when I look down inside.
Grab the vertical cylinder, step your feet on the base, and give the cylinder a gentle, but firm twist in a counter clockwise (looking down at the pump) direction. In addition, the locking nut at the top of the cylinder should also unscrew similarly, giving you access to the piston inside. The base is also fairly simple to troubleshoot.
>> what kinda pump ? Just a plain Jane 'Specialized' brand floor >pump with gage and dual sided head.
Quoted message said:
Quoted message said:
Quoted message said:
Well, take it apart and see what the piston cup is doing. These things fail mainly because they get flaming hot when inflating a tire from compression work. Then the piston cup falls apart. You should be able to get a new one.
Quoted message said:
Quoted message said:
That's what I tried to do... but I didn't see anything amiss, nor did any parts fall out when I tipped it over. I can't get the body off of the base to see if there's anything inside, so I'm not sure if I'm seeing the bottom of the tube, or something else when I look down inside.
Grab the vertical cylinder, step your feet on the base, and give the cylinder a gentle, but firm twist in a counter clockwise (looking down at the pump) direction. In addition, the locking nut at the top of the cylinder should also unscrew similarly, giving you access to the piston inside. The base is also fairly simple to troubleshoot.
how old is it? the pump? did you service the pump? with finish line teflon grease? well, try that-smear grease on the tube and on the plunger disc (plunger disc? should i google this? or eat dinner?) second cut the end of the air line off just before the hose enters the unmentionable escrezance (*&^**& gizmoid fits on the tube's air valve and replace that O(*&😉()(*& with a http://www.biketoolsetc.com/index.cgi?id=95283897247&d=single&c=Tools&sc=Tire-and-Tube&item_id=SK-3123 which is as it sez (*&(*&*&!!! turd: be sure you have your synapses in order fitting the unmentionable gizmo on the tube's valve
right. lubing the tube and plunger with synthetic grease is best as the synth avoids possible problems from detergents in and the solvent of petroleum and soap greases. also clean the tube carefully-sand and grit wander in stp
In article <[email hidden]>, [email hidden] says...
Quoted message said:
Quoted message said:
Rex Kerr said:
> what kinda pump ? Just a plain Jane 'Specialized' brand floor pump with gage and dual sided head.
Well, take it apart and see what the piston cup is doing. These things fail mainly because they get flaming hot when inflating a tire from compression work. Then the piston cup falls apart. You should be able to get a new one.
That's what I tried to do... but I didn't see anything amiss, nor did any parts fall out when I tipped it over. I can't get the body off of the base to see if there's anything inside, so I'm not sure if I'm seeing the bottom of the tube, or something else when I look down inside.
Check also, that the tube of the pump is still screwed tightly into the bottom section and that the connection where the flexible hose joins on to the body is also tight.
and in the middle of pumping up the tire my floor pump just flat stopped working. There is no resistance to going up and down, and it doesn't blow any air. I pulled the top off of it and everything appears to be intact.
Well, apparently not everything was intact. There were two sections to the plunger giving me the impression that it was intact, but in reality there was another rubber piece that had come off. I straightened a coat hanger and made a small hook on the end and with some fishing managed to pull out the real plunger that was still sitting at the bottom. After putting it back on, everything works again.
