The 644 was the smallest mini-construction loader offered by Case. It was powered by the Kohler "K" 14 horsepower single engine. It is a great machine for the homeowner, and homestead situation. Being a heavier loader the 644 can get the job done, just a bit slower and not those extreme jobs, as the 14-horse engine can be pushed to its limits in this machine. Now that said it is still far more capable than many of the competitor machines with loaders added to them. Besides being lower horsepower its biggest downfall along with the 646 is not having powering steering. Though many owners do not find it a big deal as they do turn well especially when moving, once one uses a power steering model no one ever wants to go back. There seem to be a few backhoes 644 made but they are very rare and were not made for long or many of them.

The 646 shocked many with its incredible capabilities it truly was a mini commercial loader. With its big heavy cast iron Onan CCK 16.5 horsepower engine that made lots of torque. Some 646 are seen with Onan "B" Series engines, 16 horsepower. These machines offered impressive digging and lifting capabilities. The capabilities were similar if not better than some of the skid steers and small tractors of the same era. Because of this, they were very popular with municipalities, institutions, campuses, landscapers, farmers, cemeteries, warehouses, septic companies, etc. Then and now the 646 is a popular machine and many hang on to them and when they come up for sale they sell very, very fast! If you want one and see one, grab it! Or you will lose it!

Ah the 648, the 648 was everything the 646 was and MORE. The 648 was powered by a "B" Series Onan 18 horsepower 2-cylinder engine. It came standard with power steering and a big hydraulic pump. Also standard was a holding valve and rear PTO valve. Another improvement was the wider front tires and stance as well as a lower high-range gear. These were some of the changes the 648 had over previous models. It could be equipped with 3 point hitch like the other loaders as well. The 648 replaced both the 644 and 646 as the Loader offered by Case Ingersoll and was released in 1980. This small footprint machine weighed around 1,300 lbs to around 2,000 lbs with added weight!

The 646 BH was the same machine as the 646 loaders but with the backhoe option, not just any backhoe, but a true commercial heavy-duty backhoe. The D100 made by Davis, this backhoe was used on lots of equipment and was the same backhoe offered on skid steers, adapted to 3 points for big farm tractors, and also the same used on the smaller models of the full-size Case construction backhoes and small crawlers. The backhoe package was not just the hoe but a full undercarriage sub-frame under the whole 646 as well as mid and front counterweights and its own dedicated hydraulic circuit to make it a true backhoe machine, unlike others that just bolted to the rear or 3-point.

Well-designed and built by those who make the famed Case 580 full-size backhoe, the 648 really does follow in the same footsteps and reputation. It is the same platform as the 648 loaders but with the added D100 backhoe package as described under the 646. The backhoe package also included wider rear axles, bigger axles, a webbed gusseted rear end, wider rims, and 12-inch wide tires! This helped make the machine more stable but also added weight distribution and better flotation for a machine that weighed 2,750 to roughly 3,500 lbs! Depending on added ballast. This machine was loved by all that used them and in countless industries, as they were smaller than almost any commercial machine out there but could do the same work as some of bigger size. They could get into more locations and tighter places, do less damage and be hauled to more places where bigger trucks or trailers could not go. They hold their value very well and when come up for sale go VERY fast!