Glossary Of Terms - Polaris A12MH46AX Service Manual

GENERAL INFORMATION

Glossary Of Terms

ABDC: After bottom dead center.
ACV: Alternating current voltage.
ADC: Active Descent Control.
Alternator: Electrical generator producing voltage
alternating current.
ATDC: After top dead center.
BBDC: Before bottom dead center.
BDC: Bottom dead center.
BTDC: Before top dead center.
CC: Cubic centimeters.
Center Distance: Distance between center of crankshaft
and center of driven clutch shaft.
Chain Pitch: Distance between chain link pins (No. 35 =
3/8, or 1 cm). Polaris measures chain length in number of
pitches.
Crankshaft Run-Out: Run-out or "bend" of crankshaft
measured with a dial indicator while crankshaft is
supported between centers on V blocks or resting in
crankcase. Measure at various points especially at PTO.
DCV: Direct current voltage.
Electrical Open: Open circuit. An electrical circuit which
isn't complete.
Electrical Short: Short circuit. An electrical circuit which
is completed before the current reaches the intended load.
(i.e. a bare wire touching the chassis).
Engagement RPM: Engine RPM at which the drive clutch
engages to make contact with the drive belt.
ft.: Foot/feet.
Ft. lb. / Foot Pound: A force of one pound at the end of
a lever one foot in length, applied in a rotational direction.
g: Gram. Unit of weight in the metric system.
gal.: Gallon.
ID: Inside diameter.
in.: Inch/inches.
Inch Pound: In. lb. 12 in. lbs. = 1 ft. lb.
kg/cm: Kilograms per square centimeter.
kg-m: Kilogram meters.
Kilogram/meter: A force of one kilogram at the end of a
lever one meter in length, applied in a rotational direction.
l or ltr: Liter.
Left Side: Always referred to based on normal operating
position of the driver.
m: Meter/meters.
Mag: Magneto.
Magnetic Induction: As a conductor (coil) is moved
through a magnetic field, a voltage will be generated in the
windings. Mechanical energy is converted to electrical
energy in the stator.
mi.: Mile/miles.
mm: Millimeter. Unit of length in the metric system. 1mm
= approximately .040,.
Nm: Newton meters.
OD: Outside diameter.
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9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
Ohm: The unit of electrical resistance opposing current
flow.
oz.: Ounce/ounces.
PDM: Power Distribution Module.
Piston Clearance: Total distance between piston and
cylinder wall.
psi.: Pounds per square inch.
PTO: Power take off.
qt.: Quart/quarts.
RPM: Revolutions per minute.
Regulator: Voltage regulator.
charging system output at approx. 14.5 DCV as engine
RPM increases.
Resistance: In the mechanical sense, friction or load. In
the electrical sense, ohms.
conversion to heat.
Right Side: Always referred to based on normal
operating position of the driver.
RPM: Revolutions per minute.
Seized Piston: Galling of the sides of a piston. Usually
there is a transfer of aluminum from the piston onto the
cylinder wall. Possible causes: 1) improper lubrication; 2)
excessive temperatures; 3) insufficient piston clearance;
4) stuck piston rings.
Stator Plate: The plate mounted under the flywheel
supporting the battery charging coils.
TDC: Top dead center. Piston's most outward travel from
crankshaft.
Volt: The unit of measure for electrical pressure of
electromotive force. Measured by a voltmeter in parallel
with the circuit.
Watt: Unit of electrical power. Watts = amperes x volts.
WOT: Wide open throttle.
Regulates battery
Both result in energy