What determines the maximum weight that can be lifted by the tractor’s hydraulic lift arms?
- The hydraulic oil type and the lifted device.
- The maximum air pressure approved by the manufacturer of the tractor’s rear tires.
- Correct answer: The manufacturer’s table, which indicates weight restrictions according to the distance of its center of gravity from the tractor.
- The mechanical condition of the tractor’s engine, pump and hydraulic system.
Why this is the answer
The correct answer in the official bank: The manufacturer’s table, which indicates weight restrictions according to the distance of its center of gravity from the tractor.
The maximum lifting weight comes from the manufacturer's table, not from the engine's condition, the hydraulic oil or the tire pressure. The farther the load's center of gravity is from the tractor, the greater the leverage on the lift arms, which can overload them or lift the tractor's front and cause loss of steering or tipping. So the allowed weight drops as the distance grows.