Glossary “parallelogram linkage” Definition:
Steering linkage system having a short idler arm mounted on the right side in such a manner that is parallel to the pitman arm.
p
parallel circuit
Glossary “parallel circuit” Definition:
Electric circuit having two or more paths that the current flows through at the same time. The current is divided with more of it flowing through the path of least resistance.
parallel linkage
Glossary “parallel linkage” Definition:
Steering linkage having equal-length tie rods.
parallel-joint type
Glossary “parallel-joint type” Definition:
Drive shaft installation whereby all companion flanges and/or yokes in the drive line are parallel with each other with the working angles of the joints of a given shaft being equal and opposite.
parallel-series circuit
Glossary “parallel-series circuit” Definition:
Circuit with several parallel branches, each branch containing one or more series components.
parabolic reflector
Glossary “parabolic reflector” Definition:
Reflector in the shape of a concave parabola used for radar and other microwave antennas.
parallax error
Glossary “parallax error” Definition:
Error that occures if the pointer of an analog meter is viewed from any angle except straight on, or if a timing light flash is viewed at an angle.
parallel
Glossary “parallel” Definition:
The qua;ity of two items being the same distance from each other at all points. Usually applied to lines and to machined surfaces.
panel nut
Glossary “panel nut” Definition:
Thin nut used to hold parts or fittings to a bulkhead.
panel replacement
Glossary “panel replacement” Definition:
Removing and installing a new panel or body part.
panel straightening
Glossary “panel straightening” Definition:
Bending or shaping the panel back to its original position, using hand tools and equipment.
panel truck
Glossary “panel truck” Definition:
Enclosed light truck or van having no windows in the cargo area.
panhard rod
Glossary “panhard rod” Definition:
Rod that is attached to the vehicle frame at one end and to the axle at the other end to prevent the chassis from moving side to side relative to the axle.
pan rails
Glossary “pan rails” Definition:
Sides or flange of an oil pan that bolts to the engine block.
pancake engine
Glossary “pancake engine” Definition:
Engine having opposed pistons, such as a flat four, or a flat six.
panel alignment marks
Glossary “panel alignment marks” Definition:
Marks that can be provided on new parts to help position them for welding.
panel cutter
Glossary “panel cutter” Definition:
Special “snips” used to cut through body sheet metal, designed to leave a clean, straight edge that can be easily welded.
pan
Glossary “pan” Definition:
Term often used for oil pan. Also refers to a vehicle’s floor component.
PAIS
Glossary “PAIS” Definition:
Pulsed Air Injection System
pal nut
Glossary “pal nut” Definition:
A thin pressed-steel nut used to lock a regular nut place.