How do you replace the steel hydraulic lines on a Bobcat 440B?

To replace the steel hydraulic lines on a Bobcat 440B, first, ensure the machine is off and the hydraulic system is depressurized. Use wrenches to disconnect the old lines from the hydraulic components, taking care to note their routing and connections. Install the new lines by securing them at the same points, ensuring they are properly aligned and free from kinks. Finally, refill the hydraulic fluid if necessary, and check for leaks by testing the system before returning the machine to service.