Section i - Introduction Definition Of Terms M11 Page i-13 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 REPTO: Rear Engine Power Takeoff RPM: Revolutions Per Minute S.A.E:. Society of Automotive Engineers SCA: Supplemental Coolant Additive SEN Harness:
The wiring harness used to connect the engine system sensors to the ECM 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 VS: Variable Speed VSS: Vehicle Speed Sensor Water Pump Grease:
A premium high temperature grease that will lubricate antifriction bearings continually from minus 40 C [ minus 40 F] to plus 150 C [ plus 350 F]. Some of the greases meeting this requirement are Aeroshell No. 5, Chevron SRI, Amoco Rykon Premium No. 2, Texaco Premium RB, and Shell Dolium R. Caution: Aeroshell No. 5 is not compatible with the other greases and must not be mixed. Cummins Engine Co., Inc., uses Aeroshell No. 5 on new engines and components.