In an extra nice article in the tech part of this website ( http://www.pirate4x4.com/articles/tech/billavista/Gear_Setup) it is explained how to set gears. I am going to perform a job on a CRD60 and I have only one question. In title “Installation and Setting Pinion-bearing Preload” where it says in point 11 by picture ol to hold the yoke, torque pinion nut to 255 ft-lbs. Do not simply hammer the nut on with an impact wrench, as the torque on the nut has a direct effect on pinion-bearing preload”, what tool is the writer referring to? I guess it must be some sort of do it yourself tool, but considering the torque I will apply, I must find a way to hold it firmly. Any suggestion?