What is lapping and what was the cost?
Thanks
Did a quick search, didn't find a definition, just a description. Looks like part of the manufacturing process where they set the gears where precisely how they should be, then shim them in place:
http://www.thisoldtractor.com/guzzitech.dk/gb_en_complex-technical_bevel-box.htm Relevant bit:
" The way they are manufactured involves in it's final stages a lapping process where the gears are set up in a dolly that places them in their ideal running format and they are then lapped together to make a mating pair.
Once this has been done whenever the gears are used they must be set up in precisely the same configuration, or very, very, close to it. This is the reason that the gears have to be shimmed up. What you are doing is getting as close as possible to the ideal."
