There are to many variables to be exact. There are different engines, transmissions, and rear ends available. You would also need to know what size, and kind of bed it was. Then are you talking loaded or empty weight. Loaded weight max legal is probably 56,000 lb. Empty weight between 17,000 and 20,000 lb. If it is twin axles. Less if single axle.
Somewhere in the vicinity of 19,000 - 23,000 lbs., depending on specifics such as drivetrain, wheelbase, material the dump body is made of and the height of the walls, etc.
I own one with a 5 yard dump box on it. I weigh in at 11060lbs empty.
15000 lbs.
The 1972 F600 with a 359 HD dump weighs 9980 lb (4527 kg).
Fuse diagram for Ford F550 Dump truck
What is the hydraulic oil capacity of the 97' Ford F 800 dump truck with a Heil dump body.
1800
Ford produced their first dump truck in 1970 with the Ford L Series Trucks. They produced many such models until 1998 when production on them was stopped.
You can locate a Ford dump truck for sale online using the Commercial Truck Trader website. You can also find someone on the autos section of the eBay auction website.
10000
can you help
No way of telling without knowing the model. Ford manufactured (and continues to manufacture) a whole range of vehicles with varying tare and gross weights.