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Forks were 'flat' today after a long time unridden. Inflated them and noticed a slight leak under the valve. I expect to find them down again the next time I get it out.
How do I sort it? Take the top off and try to tighten the valve somehow?
Remove the valve with a socket (10 or 11 mil) and inspect the seal, if its ok grease it and replace. I would replace the valve core also as a matter of course.
Valve core or top cap?
If it's the core remove clean little lube and replace, if it's the top cap as above but they are made of cheese so be very careful. It's best done with a socket the right size that has been flattened off. Of course you will have one of these from when you last did a lowers service 😉
It's the core. I'll give it a go over the weekend. Just didn't look like it would screw straight out to me.
The lowers services are always a ballache, one nut just spins the internals when reassembling unless the forks are under load, even then I struggle.
The easiest way to sort a spinning nut is to get a small screw driver and with the forks upside down press the screwdriver blade up against the threads (be sure not to mess the threads up by pressing too hard).
Then start to turn the nut. Once the nut starts turning, if it gets stiff and harder to turn with or the screw driver starts flying off, put the screw driver blade under the nut against the crush washer as if trying to levy the nut off the threads, this should be sufficient enough force to stop it spinning. I have a small Snap-on spoon that I use, its perfect for the job.
Good tip, I'll try it next time. Always been a bit hesitant to do something similar because the metal is so soft.
Last time I did the splash oil change it took me quite a while to get the nut to a point where the leg held firm. Nipped it up only to realise I'd not replaced the oil 8)
Managed to get 1/8 of a turn on the air valve today which seemed to stop the air bubbling out. I'll know more in a few days. 10 MM. socket was slightly loose and I didn't want to round it, 3/8' fit nicely.