[vash]

i have two of them. both the same. (one black, one white)

despite owning the black one for about 20 years..i dont know jack about them. never needed to. they have always worked. i loaned the black one out to a buddy and he disappeared. i needed one, so i bought the white one. then i found my friend and he gave the black one back.

now i need to know more about them. because they both now suck. i only have presta tubes. i cannot press the air chuck on and start pumping. i have to use one hand to hold the dumb chuck, and pump with the other. awkward! if i let go of the chuck..it pops off. i have to fiddle with the chuck. sometimes it doesnt allow air into the tube and the pressure rockets inside the airhose.

i've oiled them thru that small hole. but sometimes the pump moves without resistance. no air moved.

i've taken apart the chucks and it is only that black rubber thing, and a plastic cup..i assume the cup allows you to change to a shrader valve?

is it time to get a more modern pump? (one pressure gauge broke, so i only have one workable pump)

who knows silca pumps? i think i have that #24 brass chuck on both tools.

need pics?