minor point but that is the reverse stop screw, not 3rd gear.
don't recall the instructions for setting it but I have seen one where the nut spun away from the case allowing the screw to spin itself in until reverse was no longer selectable.
caused quite a panic for the owner.
Originally Posted by
Mercedesrover
At the top, humpy part of the t-case is a long 1/4x28 screw with a lock not that adjusts the 3rd gear throw. It's got a screwdriver slot carved in the end of the screw that you can mangle if you're not carefull. Not the position/length of that screw and make sure it's back in the same spot when you put things back together.
A Land Rover would never turn up to collect an Oscar. It'd be far too busy doing something important, somewhere, for someone."