21. This bridge is manually swung by a hydraulic pump action. 22. Portuguese investigators found mismatched pipes on the hydraulic pump . 23. New products consisted mainly in tires, hydraulic pumps and machine tools for the textile industry. 24. However, most hydraulic pumps cannot be used as hydraulic motors because they cannot be backdriven. 25. The gearbox drove the fuel pump, its own lubrication pump, and the HPU hydraulic pump . 26. This borrowed engine did not include a hydraulic pump . 27. With electrical power lost, all 4 hydraulic pumps stopped. 28. Buoys use the rise and fall of swells to drive hydraulic pumps and generate electricity. 29. The hydraulic system include an engine-driven hydraulic pump , a hydraulic reservoir / accumulator, and filter. 30. It is a wet, multiplate clutch system that Volvo suggests is something of a hydraulic pump .
