This SAE Standard specifies a method for determining the coordinates of the center of gravity of earthmoving machinery such as tractors, loaders, dumpers, and graders in any condition of loading or position of attachments.
SAE J874-1986 history
2003SAE J874-2003 Earthmoving Machines Method for Locating the Center of Gravity
0000 SAE J874-1993*ISO 5005
1986SAE J874-1986 Earthmoving Machines--Method for Locating the Center of Gravity