Posted by Jiles on December 27, 2014 at 14:28:01 from (69.137.29.28):
I have worked in large industry with many different type pumps.
One of the simplest pumps I have ever worked on, is chainsaw oiler pumps.
Most are a tube with a close tolerance solid shaft inside that has a shallow flat machined across the outside diameter on the end and is rotated by a gear. Inline with the flat, on either side of tube, is a feed fitting and a discharge fitting.
I have never understood how, when the shaft is rotated, they can pump oil from the oil tank to the chain and bar, with no check valves of any type involved.
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that’s wha
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