66 INSTRUMENTS AND CONTROLS 4. Exhaust Pyrometer (If Equipped) – Indicates the temperature of exhaust gases (about 12 to 16 inches from the diesel particulate filter inlet connections). This helps the operator select the proper gear for load and grade conditions, thereby avoiding excessive exhaust temperatures.
CAUTION Do NOT exceed the maximum exhaust temperature indicated by the red line on the gauge. To reduce exhaust temperature, downshift or reduce engine power. If operating in cold climates with a winterfront, open the winterfront. 5. Transmission Oil Temperature Gauge (If Equipped) – Indicates transmission oil temperature.
CAUTION The maximum safe oil temperature for MACK transmissions is 121°C (250°F) for mineral-based oil, or 148°C (300°F) for synthetic oil. Continued with oil above this temperature will cause rapid deterioration of the oil’s lubricating properties and is NOT recommended. Consult the vendor manual for non-MACK components. 6. Aftertreament DEF Tank Level gauge 7. Integrated Temp-A-Start (Amber) (If Equipped) – "Integrated Temp-A-Start" saves fuel by reducing the amount of time spent idling to keep the vehicle’s batteries charged, the engine warm, or the cab and sleeper comfortable. Once the optional ’Integrated Temp-A-Start’ feature is activated via a dash switch, the system will automatically start and stop the truck engine. Safety overrides prevent the system from activation if the transmission is in gear, the hood is up, or the parking brake is released. Integrated Temp-A-Start voltage and temperature target settings are fully programmable through either VCADS service support software, or, if enabled via the Co-Pilot instrument cluster display 8. Wait to Start (Amber) (If Equipped) – Indicates that the intake pre-heat is enabled. Wait to start engine until light goes out. 9. Transmission Oil Temperature Indicator (Red) – A red tell-tale light that illuminates when transmission oil temperature reaches a pre-determined level (depending on transmission make and model) indicating an overheat condition.
