m: Meter
Magnetic Particle Inspection: A method of checking for cracks in either steel or iron parts. This method
requires a Magnaflux machine, or an equivalent machine that imparts a mag-
netic field on the part being checked.
Mallet: A hand tool consisting of a soft head; either wood, plastic, lead, brass, or
rawhide on a handle.
MAX: Maximum allowed
MIN: Minimum allowed
Mini-Gen: Speed Sensor
mm: Millimeter
MPa: Megapascal
MPH: Miles Per Hour
MPQ: Miles Per Quart
N•m: Newton-meter
No.: Number
OD: Outside Diameter
OEM: Original Equipment Manufacturer
OEM
Harness:
The wiring harness used to connect the ECM to the vehicle
OS: Oversize
PCU: PACER Control Unit
ppm: Parts Per Million
Protrusion: The difference in the height between two parts in the assembled state.
psi: Pounds Per Square Inch
PTO: Power Takeoff
RPM: Revolutions Per Minute
S.A.E:. Society of Automotive Engineers
SEN
Harness:
The wiring harness used to connect the engine system sensors to the ECM
STC: Step Timing Control.
STD: Standard
TC: Torque Converter; used when referring to the torque converter cooler.
TDC: Top Dead Center; refers to the position of the piston or the crankshaft rod
journal. The piston is at its highest position in the cylinder. The rod journal is
pointing straight up toward the piston.
TIR: Total Indicator Reading; used when measuring the concentricity or the run
out. The TIR refers to the total movement of the needle on a dial indicator,
from the most negative reading to the most positive reading.
VOM: Volt Ohm Meter
Definition Of Terms Section i - Introduction
N14Page i-14
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