Operation - Section 3 OM3021.2 12/99 Page 3-18 Operator Cab and Controls Warning Lights Dimmer Control AIR CLEANER VACUUM GAUGES This control knob (12, Figure 3-1) permits the operator to adjust the brightness of the Warning Indicator Lights. The Air Cleaner Vacuum Gauges (16, Figure 3-1) provide a continu- ous reading of maximum air cleaner restriction reached during operation. STATUS / WARNING INDICATOR LIGHT PANEL This panel (13, Figure 3-1) contains an array of indica- tor lights to provide the operator with important status messages concerning selected truck functions. Refer to INSTRUMENT PANEL AND INDICATOR LIGHTS, for a detailed description of these indicators.
The air cleaner(s) should be serviced when the gauge(s) shows the following maximum recom- mended restriction: Cummins QSK-60C Engine: 25 inches of H 2 O vacuum. NOTE: After service, push the reset button on face of gauge to allow the gauge to return to zero. Payload Meter Download Connector This connector (14, Figure 3-1) is used with a special cable to allow the Payload Meter (15) to communicate with a Portable Computer. WINDSHIELD WIPERS The windshield wipers (17, Figure 3-1) are powered by an electric motor. Refer to INSTRUMENT PANEL AND INDICATOR LIGHTS, for a location and description of the windshield wiper and washer controls.
PAYLOAD METER The Payload Meter (15, Figure 3-1) and Download Connector (14) is used to provide management with operational data such as tonnage hauled and cycle times. Refer to Section 6, Optional Equipment, for a more complete description of the payload meter and its functions.