Operating Instructions - Section 32 10/04 OM3215 Page 32-12 Key Switch Key switch (1, Figure 32-8) is a 3-position (OFF, RUN, START) switch. Starting When the switch is rotated one position clockwise, it is in the RUN position and all electrical circuits (except START) are activated. With the Selector Switch in NEUTRAL, rotate keyswitch fully clockwise to START position and hold this position until engine starts. START position is spring loaded to return to RUN when key is released. If the engine is equipped with a Prelub system, a noticeable delay will occur before cranking begins. Refer to “Section A”, Engine Startup Safety Practices for detailed instructions.
With truck stopped, turn keyswitch counterclockwise to OFF for normal engine shutdown. Use the Engine Shutdown switch on center console, if engine does not shutdown with keyswitch. NOTE: A ground level shutdown switch is located near the diagonal ladder steps on right front corner of truck. Engine Shutdown Switch With Timer Delay (Optional) This is a 3-position (OFF-ON-MOMENTARY) rocker type switch (2, Figure 32-8). Refer to “Operating Instructions” section, “DELAYED ENGINE SHUTDOWN PROCEDURE”, for a complete detailed operation of this switch. 1.
Press top of switch to the ON (center position), then press firmly to the MOMENTARY (upper position) and hold this position briefly to activate the 5 Minute Idle Timer (switch is spring-loaded to return to ON position when released). Turn the Keyswitch counter- clockwise to the OFF position. When the engine stops after the 5 minute idle period, the hydraulic bleeddown timer will be activated and turn OFF the 24 VDC electric circuits controlled by the keyswitch. Engine WILL NOT SHUT DOWN, if keyswitch is not turned OFF in this manner. NOTE: To cancel the 5 Minute Idle Timer sequence, press Timer Delay Shutdown switch to the OFF (lower) position.
If keyswitch is in OFF position, engine will stop. If keyswitch is in ON position, engine will continue to run. If engine does not shutdown with keyswitch, use Engine Shutdown Switch on operator cab center console, and hold this switch down until engine stops. The Ground Level Shutdown Switch will also stop the engine during this time-out. 2. When the Engine Shutdown Timer has been activated, the Timer Delay indicator light in the overhead display panel (C4, Figure 32-9) will illuminate to indicate that the shutdown timing sequence has been started. The engine will continue to run at Idle RPM for approximately 5 minutes to allow for proper engine cool-down before stop- ping.