Operation and maintenance manual
Acronyms and Abbreviations QSB4.5 and QSB6.7
Page i-16 Section i - Introduction
NOx Mono-Nitrogen Oxides
NG Natural Gas
O2 Oxygen
OBD On-Board Diagnostics
OEM Original Equipment Manufacturer
OSHA Occupational Safety and Health Administration
PID Parameter Identification Descriptions
ppm Parts Per Million
psi Pounds Per Square Inch
PTO Power Takeoff
REPTO Rear Power Take Off
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
TDC Top Dead Center
VDC Volts of Direct Current
VGT Variable Geometry Turbocharger
VS Variable Speed
VSS Vehicle Speed Sensor










