Posted by glennster on September 11, 2012 at 12:46:23 from (75.57.143.173):
In Reply to: 1566 air conditioning posted by jdetig1 on September 11, 2012 at 11:30:40:
as far as charging, use about 80 % of r-134 as opposed to r-12. example if the system uses 2 lbs of r-12, 2 lb x .8 = 1.6 lbs of r-134. also, like super h mike said use ester oil. if you cant find the capacity of the system you can ball park it with charging gauges. low side pressure at about 80 degrees f should be around 45 to 48 psi. high side should be around 200 psi (roughly). evac the system with a vaccuum pump for about an hour, then let the vacccuum hold for another hour to see if there is a leak. (vaccuum will drop if leaking) generally about 28 inches of vaccuum is where we pull the system.
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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