Posted by s.crum on October 29, 2012 at 10:01:46 from (184.108.40.206):
Hi Folks, Have a question. I have a 1974 Hobart G-3010 300 amp engine drive welder/alternator (generator). the alternator is a separate 10 KW unit at the rear of the welder generator. Yes industrial heavy duty. Anyhow I just spent most of the morning taking out the alternator brushes for a good cleaning and inspection, I also cleaned and polished the slip rings with crocus cloth. After standing on my head and finangling for several hours everything is back together with no extra parts even. Now considering this is NOT a real fun job I want to repeat with frequency, I recall an old timer saying that the brushes and commutator (slip rings in this case) in a generator should be sprayed with WD-40 after use if the unit will be sitting un-used for any length of time. It makes sense but are there any pitfalls? Would I need to clean off the WD-40 before the next use? I know some electrical contacts like this are not real fond of oily substances in the contact area. Opinions? Yup getting ready for the wrath of Sandy!
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