Glossary “short term fuel trim” Definition:
The short term compensation made by the engine controller to vary injector pulse width by a percentage to maintain minimal emissions output.
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shorted circuit
Glossary “shorted circuit” Definition:
A circuit that allows current to bypass part of the normal path.
short gear
Glossary “short gear” Definition:
A final drive with low gearing.
short circuit
Glossary “short circuit” Definition:
Intentional or unintentional grounding of an electrical circuit.
short circuit transfer
Glossary “short circuit transfer” Definition:
Preferred mode of filler transfer during MIG welding, where the filler wire alternately shorts to the weld puddle and then burns free, re-igniting the arc.
short cycling
Glossary “short cycling” Definition:
1). A rapid cycling of the clutch resulting in poor cooling condition of the air conditioner that can be caused by poor refrigerant and/or air circulation or a maladjusted thermostat. 2). An electrical condition where the device goes on and off as cycled by a circuit breaker due to a malfunction.
short deck engine
Glossary “short deck engine” Definition:
Engine block designed to accommodate a short-stroke crankshaft.
short bed
Glossary “short bed” Definition:
Cargo area of a shortwheelbase pickup truck, usually about six feet.
short block
Glossary “short block” Definition:
A new or rebuilt engine block with all internal parts, without heads.
short and long A-arms
Glossary “short and long A-arms” Definition:
A double A-arm suspension where one arm is shorter than the other.
short arm
Glossary “short arm” Definition:
The throw of a crankshaft that has not been stroked.
short arm, long arm suspension (SLA)
Glossary “short arm, long arm suspension (SLA)” Definition:
A conventional front-suspension system that uses a short upper-control arm and a long lower-control arm.
shop housekeeping
Glossary “shop housekeeping” Definition:
A term used for housekeeping.
shoe hold-down spring
Glossary “shoe hold-down spring” Definition:
A coiled compression spring that applies pressure to hold the brake shoes against the backing plate.
shoe retracting spring
Glossary “shoe retracting spring” Definition:
A coiled tension spring that pulls the shoes away from the brake drum after the pedal is released, forcing the brake fluid back into the master cylinder.
shoot
Glossary “shoot” Definition:
To spray paint, as in painting a vehicle.
shock operational check
Glossary “shock operational check” Definition:
Method used to check shock efficiency that includes bouncing the vehicle bumper vigorously and observing the shock dampening action, or pumping the brakes slowly at low speed to see if the vehicle “rocking” motion is set up.
shock piston
Glossary “shock piston” Definition:
Component attached to the bottom of the piston rod containing the rebound valve that moves back and forth inside the inner cylinder.
shock rebound
Glossary “shock rebound” Definition:
The rebound travel when the shock absorber is in its lengthened position, which occurs when the suspension or spring moves downward.
shoe
Glossary “shoe” Definition:
Lining and its steel backing on a drum brake that press against the inside of the brake drum to provide stopping power.