Introduction
PACCAR Y53-1030A 12/09 – 9 –
N•m Newton-meter
NG Natural Gas
OEM Original Equipment Manufacturer
PID Parameter Identification Descriptions
ppm Parts Per Million
psi Pounds Per Square Inch
PTO Power Takeoff
RGT Rear Gear Train
rpm Revolutions Per Minute
SAE Society of Automotive Engineers
SCA Supplemental Coolant Additive
SCR Selective Catalytic Reduction
STC Step Timing Control
SID Subsystem Identification Descriptions
VGT Variable Geometry Turbocharger
VS Variable Speed
VSS Vehicle Speed Sensor
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