Glossary “lower A-arm” Definition:
Lower member of a double A-arm suspension system.
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low side pressure
Glossary “low side pressure” Definition:
Pressure in the low side of an A/C system, from the evaporator inlet to the compressor inlet, as may be noted on the low-side pressure gauge.
low side service valve
Glossary “low side service valve” Definition:
Valve located on the suction side of the A/C system that allows the technician to check low-side pressures or perform other necessary service operations.
low speed
Glossary “low speed” Definition:
The gearing that produces the highest torque and the lowest vehicle speed.
low pressure side
Glossary “low pressure side” Definition:
1). Usually refers to the return side of a fluid or air system having a low pressure. 2). Often referred to as suction side.
low pressure switch
Glossary “low pressure switch” Definition:
Switch that is actuated due to a drop in system pressure.
low pressure vapor line
Glossary “low pressure vapor line” Definition:
Term used for suction line of a A/C system.
low side
Glossary “low side” Definition:
Term used for suction side.
low pedal
Glossary “low pedal” Definition:
1). Condition where excessive clearance, at some point in the braking system, or a low fluid level, causes almost full pedal movement for the application of the brakes. 2). The clutch pedal position of a Model T when engaged in low gear.
low pressure
Glossary “low pressure” Definition:
Relative term to describe below normal pressure in the low side of an A/C system.
low pressure control
Glossary “low pressure control” Definition:
Electrical or mechanical device used to control pressure in the low side of a system.
low pressure cutoff switch
Glossary “low pressure cutoff switch” Definition:
Electrical switch that is activated by a predetermined low pressure, to open a circuit during certain low-pressure periods.
low pressure line
Glossary “low pressure line” Definition:
Hose or line used to carry low pressure vapor, liquid, or air.
low maintenance battery
Glossary “low maintenance battery” Definition:
A conventional, vented lead-acid battery that requires periodic maintenance.
low mounted coil spring suspension
Glossary “low mounted coil spring suspension” Definition:
Type of suspension having a coil spring located above the lower control arm, with the top end of the spring contacting the car frame, found primarily on vehicles having a separate sub-frame or stub frame.
low gear
Glossary “low gear” Definition:
Speed obtained from a planetary gear set when the internal gear is held and power is applied to the sun gear, producing an increase in torque.
low gearing
Glossary “low gearing” Definition:
A drive ratio that provides maximum output at a low road speed.
low head pressure
Glossary “low head pressure” Definition:
High side pressure that is lower than expected for a given condition.
low impedance
Glossary “low impedance” Definition:
Refers to low resistance in electrical test meters. Low impedance meters should NEVER be used on electronic circuits.
low loss fitting
Glossary “low loss fitting” Definition:
Fitting designed to close automatically or manually to prevent fluid or vapor loss when used at connecting points between hoses, service valves, vacuum pumps, recovery or recycle machines.