General description This vacuum and pressure pump creates and holds a metered vacuum for testing a wide variety of vehicles and equipment, including cars, vans, motorcycles, marine, aircraft, and agricultural machinery. It can also be used for one-man brake bleeding. Technical specifications Vacuum range: 0 - 30 psi (0 to -1 bar) Pressure range: 0 - 60 psi (0 - 4 bar) Usage Vacuum testing applications include: Automatic transmission Vacuum reservoirs Air conditioning and heating Heater cores Brake systems including ABS Engine management systems Emission control systems Fuel systems Engine tuning Ignition systems Engine management including cylinder heads Valve stem oil seals Piston ring retainers on diesel engines Wastegates on turbochargers Other information Simply select the air intake control valve on the pump: Out for pressurized systems, In for testing vacuums.