I've been around caterpillars most my life but I still don't know what the model letters mean. I know LGP is low ground pressure but how about on a D3 dozer that says D3 C III. I've looked at Cats page but I never saw where it listed what a quot;Cquot; or a quot;Gquot; meant or the series number. Thanks for the help.
I'm not sure the exact meaning of the letters and numbers, The numbers like D6, D9, etc, is the size of the machine. I believe the D designates dozer. It's kind of like F series ford trucks, the bigger the number, the bigger the machine. The letter after the number is kind of like the trim package on a vehicle. The machine is for example a D3 C, means it's a D3 dozer, style C. Same deal with excavators and other cat equipment. IE: 955, 955H. 951, 951L, 951C
