Join Date: Dec 2008
Location: norman, ok
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The orifice tube is not a filter but it will act like one because it has a screen on it. Debris in the system cannot pass through the screen and will eventually create a restriction or stoppage. Most debris is usually from the compressor, but I have seen a few dessicant bags come apart too ( debris will look like sand or gritty powder ) The dessicant bag is part of the accumulator and its job is to trap mositure in the system. I always replace or at least clean the orifice tube if i'm replacing the compressor or have the system drained down for other reasons, it only takes a couple extra minutes if you already have the system drained or open. If it had a bunch of debris on the tube/screen there is a good chance more debris is in the system and will eventually make it to the orifice again unless you flush the system out.
I dont really see many concerns with clutch gap causing weak performance unless it is large and possibly delaying compressor engagement or slipping, and it probably wont last very long if its slipping before it burns up. I have never used a feeler guage to set the gap though, I always set the gap so its as close to the pulley as possible without rubbing when dis-engaged. My theory is you are leaving some room for normal wear in the clutch as it ages and increases gap.
My motto: Be nice, be polite, but have have a plan to kill everyone that you meet.
94 F250 IDI turbo, auto 2wd.. ATS housing, 3" down, 4" exh, guages. 104k miles got totalled by a damn mustang (parts now).
98 12v, 4x4 quad cab. auto with BD T/C & V/B, Banks Big head, Exh brake, AFC modded, 16.5ish*, KDP gone, 60lb springs, 4K-GSK, BHAF, pyro, trans, and boost guages. 4" straight pipe,
72 AM General M35A2, LDT465-1C "Whistler" Turbo, PTO winch.