Please send me your old ZF transmission pan and filter

[Blackwolf]

As I recall (manual not presently to hand) the first step in the Ineos-defined process is to put the lever in the mid (neutral) position before operating the screw on the transfer box (hence my deduction that the function of the screw is only to lock the selector).

If someone could devise a method to lock the lever within the cab once neutral was selected I see no reason why this would be less robust than Ineos's recommended method.

 

[Happyoldgit]

There are four holes in the plate on the underside of the shifter into which the spring loaded rod connected to the manually operated collar in the shifter. These four holes provide a positive detent for the high / low / diff lock shifter positions. I wonder if the vagaries in the cable setup would make milling a precise detent in between the H and L holes in the shifter a non starter - not to mention the lack of space between the & L holes.

Photos posted again to show underside of a shifter assembly removed from a vehicle.