Operation - Section 3 OM3017.3 Page 3-28 Instrument Panel and Indicator Lights (54, Figure 3-8) ENGINE MONITOR SECOND (Used Only With "DDEC II" Electronic Engine Controls) (57, Figure 3-8) HIGH MOTOR TEMPERATURE (OPTIONAL) When this light is lit and alarm sounds, high wheel motor temperature is indicated. Stop truck, place Se- lector Switch in "Neutral" and raise engine RPM to high idle for several minutes to cool wheel motors. If indica- tor does not turn off, notify maintenance personnel. The RED engine monitor warning light will illuminate and an alarm horn will sound if a serious engine mal- function is detected by the electronic engine control system.
Electric propulsion to the wheelmotors will be discontinued . Dynamic Retarding will still be available to slow or stop the truck. For DDEC II ONLY, the maximum engine speed will be reduced to 1675 RPM . Stop the truck as quickly and safely as possible. Apply parking brake. SHUT DOWN THE ENGINE IMMEDIATELY . Addi- tional engine damage is likely to occur if operation is continued. (58, Figure 3-8) BLANK Not currently used. Reserved for future use. (59, Figure 3-8) LAMP TEST SWITCH & Centry Diagnostic Test Switch This switch may be used for Lamp Test, or for diagnostic tests of a Cummins engine equipped with Centry Fuel Control.
(55, Figure 3-8) ELECTRIC SYSTEM FAULT The Electric System fault warning light will flash on and off when a malfunction occurs in the electrical system. The warning horn will also signal intermittently. When light comes "On", propulsion will be dropped automat- ically. Stop truck. Reset by pushing override button. If fault repeats again, stop truck and report problem to maintenance personnel. The Lamp Test Switch is provided for the operator to test the warning and indicator lights before engine startup. To test lamps, turn key switch to "run" position and move switch lever to the right for the "On" position. This action will complete a circuit to the warning and indicator lights.
The warning horn will also sound. All red warning lights and amber indicator lights should light up except those that are "BLANK" and not cur- rently used (see description of indicators and warning lights in this section – also see "NOTE: " following Indi- cator # 47). Releasing the spring-loaded switch will allow the lever to return left to the "Off" position. NOTE: STATEX III records the number of "faults/events". When a predetermined number of "faults/events" are recorded within a given time frame, the operator will not be able to reset the fault/event by using the override switch. If this occurs, notify maintenance personnel imme- diately.
For diagnostic tests of a Cummins engine equipped with Centry Fuel Control, refer to " Centry Diagnos- tics " at the end of this section. (56, Figure 3-8) MOTOR BLOWER OFF The motor blower warning light will flash ON and OFF, and an alarm will sound, if a malfunction occurs in the cooling air circuit for the alternator and motorized wheels. Stop truck immediately and notify mainte- nance personnel . Damage to electrical components may result without proper ventilation of rotating equip- ment.