Purzel what are talking about ?

the fuel tank is the right shape, the curbed engine panel is a dead give away, the sterring column screams Caterpillar and if you look carefully the letters on the right are T on top and H on bottom because CAT D8H is written on it and this is the correct dozer for the time period and looks like it

http://www.imcdb.org/vehicle.php?id=912065


ther ewas a D7H but a much newer machine

http://www.afrimech.com/uploads/pics/SAM_0670_01.JPG

and a D9H but looks too big and doesn't have that box on the side
https://i.ytimg.com/vi/97d1D8kGAwU/hqdefault.jpg