Posted by BarryRanch on July 25, 2015 at 15:09:53 from (216.160.149.63):
So we just converted our 4455 from R12 to R134, and a whole crap ton of nothing.. To be clear, I will go over every little thing we did to it: All new lines, High side, Low side, and the one going to the condesor, all new o-rings, low pressure switch works properly, New air dryer, updated fittings, the low side peice on the pump was replaced cause the threads fell apart, internals looked okay, 3 ounces of pag oil chased by 6 cans R134.Gauge was going up and down like the compressor was working, we were reading kinda high on the low side pressure. The only thing we didn't do that I think might be screwing us up is evacuating the system, but the system had no R12 left in it, due to the changing of the hoses and air dryer. To say the least, I am kinda stumped. What else could be going on?
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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