Re: 318 steering- wheel just spins
PA318Guy, There ARE "cleaners" available to dissolve/remove varnish, carbon, sludge and other contaminants from hydraulic system, are 100% compatible with the oil(s), and will not damage the system.
When I worked in maintenance back in the late 80's, most of our machine tools where 50, & 60's vintage. It was a production shop and equipment was not allowed be shut down for preventive maintenance. We'd add oils as nec. to keep machines running, and that was it. As a result of 20-35 years of running without "fresh" oil, cylinders, solenoids, and other valves became "gummed up" and just plain stopped operating. I did some research and found a product called Mobil Sol A which was supposed to remove deposits and keep systems operating. With my persistence, I was finally allowed to shut machines down and replace oils...with the addition of Mobil Sol A. Seals began to seal, solenoids and valves began to, once again, operate as they were supposed to. Mobil's claim that their product would clean the system of contaminates was true!
I just contacted Exxon-Mobil, about 15 minutes ago, and found that Mobil Sol A is no longer available and has been replaced by "Exxon Mobil System Cleaner", a safer (due to flash point and human health hazards) and more environmentally safer product...no comments as to working better or worse!
Soo, there is a product you can add to your hydraulic (or lube) systems that will clean them (in my opinion & Mobil's opinion) without harm to the system/components. Now, the bad news! It's only available in 5 gal containers for $325.
This is just some of my "useless information" that I like to pass on...especially when someone says, 'I've never ..... Bob