It's not a load of crap. Several 01+ 4.0 owners report the same issues I've just reported in this thread. From what I've read, Ford made a slight design change in the slave cylinder in the late 90's. They are a ticking time bomb that go off at no notice. Shoot...Bob Rwenzing didn't even hit 10k when his first went. Of course we all know he went 5.0/auto at about 28k or so.
I've owned the truck since Nov '04 with 30k. in about June '05 at approx 50k, all ford replacements went in(including ford luk clutch set because the stocker was almost toast) when the first slave went. 2nd slave took a dump at about 65, replaced with another Ford slave and also upgraded to a StageII Spec clutch. Now on the 3rd slave.....3rd one wasn't on it's way out when my 2nd gear decided to not work anymore at approx 75-80k, so in went the 2nd trans and I decided to go for a Raybestos brand slave. Better safe than sorry since the trans is out anyway. Somewhere around the 90k range, I started having issues again...so I dropped the trans again, replaced with a Raybestos under lifetime warranty, and the issue turned out to be the Master Cyl...so now I'm on slave #5 in the trucks life, master #2, and trans #2. I'm currently at 111k on the truck and it's working flawlessly now with the Spec clutch, Ford master, and Raybestos slave, minus the POS 01-02 4.0L Timing chain issues. '06 1,000 mile 4.0 is going in this week.
I've been told I don't know how to drive a manual before in the forum world, but this is not the case. After owning 6 vehicles, all of which were manuals, and been driving manuals since age 10, I've determined the manual trans Rangers issues to be caused by poor design in the slave cylinder department. And in my opinion, I look at it to be the cost of owning a manual Ranger. Its the price in which I don't mind paying for the enjoyment it gives me. Had I known about this or the timing issues before I bought the truck...maybe it would've changed my mind. Maybe Bob can chime in with his wealth of knowledge.