There are only two screens, one of course is the by pass valve between the two filters whose purpose is to open if hyd filter is plugged or when oil is too thick to pass through the filters. If you have the original style with a thermostatic pellet on it I would throw that away and get the later one with just a spring loaded valve. The only other screen that would effect your lube light would effect a lot more. Later in production of those tractors, a screen was added between power steering pump and relief valve, right in the fitting on end of hose going into valve . This was to prevent complete contamination of entire system if power steering pump fails internally. I have been there, done that on a couple. I would not be immediately concerned if the light will stay out at a moderate speed, say maybe 1200 rpm or so. Then when you get a chance have someone do a complete pressure test on the mcv, checking regulated and lube pressures according to the book. Also, don't idle that tractor down to low idle except for a few seconds. There should be a decal on the windshield or console warning of this. Tears the shock absorbing drive unit up at the flywheel end. The fluid flow from power steering pump , steers first then goes to flow divoder in MCV and operates the rest of tractor controls, like TA and brakes then it lubes parts of trans.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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