Don, This sounds plenty normal to me. I lubricate my engines after a few hours of running also, its just normal maintainence. The armature shaft is the fastest rotating part on PW engines, so it makes sense that the oil will get vaporized or slung off over a period of time on tyhe fast moving part. Unless it looks worn (hole oversize), then it ok. Just keep it up and all will be good.
Merry Christmas!
Switch to a synthetic oil, it may last longer. Don't forget to lube the wheel axles and gear axles too, & both ends of the armature. The brush plate end may have a little extra clearance in it from age, it wouldn't hurt to use a little gear lube like Lucas Red 'n Tacky on the ends of the armature to take up some of that slack from age/wear/tear.
Rob
ADCX Rob wrote: Switch to a synthetic oil, it may last longer. Don't forget to lube the wheel axles and gear axles too, & both ends of the armature. The brush plate end may have a little extra clearance in it from age, it wouldn't hurt to use a little gear lube like Lucas Red 'n Tacky on the ends of the armature to take up some of that slack from age/wear/tear.Rob
and is "slicker". Less heat, less wear.
God bless TCA 05-58541 Benefactor Member of the NRA, Member of the American Legion, Retired Boss Hog of Roseyville , KC&D Qualified
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