Comparison of size
The tracks have an operational suspension
The ripper is also operational
Two generations: Liebherr PR752 and PR754
Two large Liebherr dozers: PR754 and PR764
Many different Liebherr dozers: PR734 LGP, PR734 XL, PR752, PR754 and PR764 (rear) as well as PR731, PR722 and PR724 (front).