What the Libra zodiac sign is all about: Libra is the seventh of the 12 zodiac signs, which begins its cycle in early fall every year during Libra seasonâwhich falls around September 23-October 22.
How it works. This schematic shows the component parts of a typical leak-down tester. The gauge on the right is held at a standard pressure by adjusting the pressure regulator while the gauge on the left shows an example reading of 85-or 15% leakage.
If the gauge indicator hand vibrates, this indicates. a compression or combustion leak into the cooling. system. 7. Once testing is complete, release pressure in the cooling system. by turning the tester head lever clockwise until it moves partially. up the ramp cams. With pressure released, rotate lever counter-. clockwise to remove.