Engine Size: 3.0L V6
Refrigerant Type: R-12 => R-134
Country of Origin: United States
My '94 B3000 is basically the first year the B3000 was a rebadged Ford Ranger. So, I'm in the process of changing everything out except the evap & I'm gonna go to R-134, so I look at this listing for the Compressor/System Refrigerant & Lube Specs http://www.autoacforum.com/speclisting.pdf. It turns out that both listings for the '94 Mazda B3000 & the '94 Ford Ranger are not correct according to the original label on my truck's evaporator housing which says 1.75 lb of R-12 (oil type and amt not indicated).
The specs for the year 1994 for both vehicles at the link above say:
Mazda B3000 R-134 at 22.0 ounces, PAG-46 at 7 ounces
Ford Ranger R-134 at 36.0 oz., PAG-46 at 7 ounces (36 oz seems high, wondering if it's mistakenly listed & really should read as R-12
Does anybody have any 1st hand experience with these trucks to know approximately how much refrigerant I'll end up using? I'm guessing that the listing above for the Mazda B3000 is probably correct for R-134 even though my truck originally came R-12. Note: I noticed that the '93 Ranger's listed specs says R-12 at 32.0 oz using paraffin at 7 oz.
Also, I purchased a self-adjusting orifice. Is there anything I need to do differently as far as adjustments to the pressure switch or anything else?
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