[falcon123]

deoxit the tuning cap shaft wipers clean and lube.be aware that you need to use a non filming contact cleaner to clean the tuning cap. you dont want lube on the fins or anything else on them either.some floks lube the ball bearing and bushing with machine oil,some use grease in the bearing.i prefer machine oil as any petroleum grease will dry up faster than you might think. but the rest of the suggestions are equally valid. normally when i decide to rebuild a radio the FIRST thing i do is deoxit using D100 all switch contacts and tube pins and sockets as well as the tuning cap. i leave it on there and periodically renew it during the rebuild. i do this AS DEOXIT TAKES TIME TO EAT THROUGH THE SULPHIDES and other crap that accumulates. after the rebuild i then flush and remove it and use fader lube. DO NOT use d100 or d5 in volume controls or any similar type control EVER or any other solvent as it can eat the resistive coating in the control and destroy it. only use deoxit fader lube. additionally if you have used any contact cleaner or somesuch in these controls and have not yet destroyed it, you must re lube the the wiper and resistive element with fader lube or rapid wear can result