Posted by Jim.ME on May 05, 2021 at 15:31:35 from (67.242.178.40):
In Reply to: Replacing Valve Stem? posted by Tim in New York on May 04, 2021 at 15:26:05:
Guessing you have a liquid filled tube type tire. The stem is molded to the tube. There is a valve core housing screwed into that stem. When filling or emptying the fluid that core housing is generally removed. The valve core is inside that removable housing. The actual core inside the valve core housing is the same as most tubes or tubeless tires use.
You may want to have a replacement core housing on hand before you mess with the core. The current valve core housing screws has external threads which screw into internal threads of the valve stem and has a solid grip point in the middle that you can grip with pliers. The old type valve core housing has a nut type sleeve in the center that threads on over external threads on the stem to hold it in the tube stem. Likely your core housing is the current type, however if they haven't been touched for 20 years you should determine which you have prior to starting as they core housing must match the tube, they are not interchangeable. I ran into a tube with an old core housing recently. The swivel nut had corroded to where it was a blow out waiting to happen. Had to order a couple in, the local places don't stock those anymore. Just throwing this out for thought as it is a pain to find out if a new core alone doesn't solve your problem.
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