631G
Senior Member
We recently acquired 3 631D's and a D9G to push load with in an effort to get more competitive on our per yard cost. Generally speaking the machines are in decent shape, but I wanted to ask the forum what things that we should be aware of and to keep a tight grip on while running these units. They're all 24W series and up so all mid to early 1980's models. Hour meters all long ago were broken best I can tell, but the necks are weld free and generally tight. So far I've only had to replace a hose or two, but I get the feeling there could be injectors or fuel pumps in the future on at least one of the units based on how its running. Any input is greatly appreciated.