Martin,
I think it was Reynolds Boughton who should have had egg on there face. It was a classic mistake that was similar to the jeep problem of WW2. On braking the front springs deflect, moving the axle back slightly and pulling on the steering linkage, hence "the diving across the road" problem. I was witness to all this at that time, the vehicles were off the road for over a year, if not more, before a mod kit came out. Now, I cannot remember what the kit consisted of, as I did not fit them myself, but seem to think it was a spring shackle change. Nothing to do with the actual brakes. It may of course be that like the jeep, the problem was not fully solved even then, after modifying.
You could of course, contact Reynolds Boughton to see if they can supply a book, because the AESP is often only a commercial publication, unlike the old EMER's.
Richard
Richard,
Thanks also to you for more invaluable information. Reynolds Boughton are very helpful over the phone with regard to part numbers, but are unable to supply a workshop manual at present. I'm hoping this might change in the future as there are now a number of us driving these things privately. As for the kit your description sounds about right (sorry i know almost nothing about mechanics/engineering but am enjoying learning fast), there is a shackle connecting the front of the springs to the front axle but like you say the problem has never been fully resolved. Funny how the utility company RB's dont have a diving problem or a shackle or a 2 or 3 inch body lift (that i've seen), and they are older(mostly). Many thanks, Martin.