INSTRUMENTS AND CONTROLS

Manifold Pressure Gauge (If Equipped) – Measures the charge air boost pressure the intake

Oil Pressure Gauge – Indicates engine oil

The normal operating oil pressure for a MACK engine (at governed speed) between and kPa (40 and idling speed, the oil pressure should between and kPa (40 and

Engine Oil T emperature Gauge (Only with MACK Engine) – Indicates the temperature the engine

Note: full - load engine oil temperature can approximately 250°F a sustained basis, and can intermittently reach temperatures between 250°F 270°F . Sustained temperatures 250°F and intermittent temperatures 270°F are acceptable. However , engine oil operation temperatures exceed 250°F more than 20% the total engine operating and the oil has a minimum 300 hours service, the oil must changed. Otherwise, the normal mileage/time oil change interval may used. For the MACK recommended oil change intervals, refer the Maintenance and Lubrication Manual

Exhaust Pyrometer (If Equipped) – Indicates the temperature exhaust gases (about 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

NOT exceed the maximum exhaust temperatur e indicated the r line the T o r educe exhaust temperatur downshift r educe engine power operating cold climates with a winterfr open the winterfr

T ransmission Oil T emperature Gauge (If Equipped) – Indicates transmission oil