TM 5-3805-293-10
0005
ENGINE STARTING AND MACHINE WARM-UP CONTINUED
WARN I N G
Hearing protection is required when standing within 26 ft (8 m) of the 120M Motor Grader
while it is operating. Failure to wear hearing protection may result in hearing loss.
1. Check to make sure all bystanders are clear of machine before starting engine.
2. Place transmission control switch in NEUTRAL (WP 0004).
3. Engage parking brake (WP 0004).
WARN I N G
Monitoring system will perform an automatic self-diagnostic functional test whenever
engine start switch is turned to ON position. If action alarm does not sound or monitoring
displays are not functioning, do not start or operate machine until cause has been
corrected. Failure to follow this warning may result in injury or death to personnel as any
Warning Category 3 notifications will not be relayed to operator.
N OT E
Automatic self-diagnostic functional test verifies outputs (gauges, alert indicators, and
alarms) are operating correctly.
Gauges must sweep to the far right of their scale and then back.
Alert indicators must come on momentarily.
All segments of the LCD must come on momentarily.
Action alarm must sound.
4. Turn engine start switch to ON but do not start engine. Allow monitoring system to perform self-diagnostic func-
tional test (WP 0004).
C AU T I O N
When ambient temperature is above 0F (-18C), do not crank engine for more than 30
seconds. Allow starting motor to cool for two minutes before cranking again or damage to
starting motor or batteries may result.
When ambient temperature is between -1F (-18C) and -25F (-32C), it may be
necessary to crank engine for up to 60 seconds.
When ambient temperature is between -26F (-32C) and -40F (-40C), it may be
necessary to crank engine for up to 120 seconds.
Shut down engine immediately if engine system indicator or action light indicator comes
on. Notify Field Level Maintenance. Failure to follow this caution may result in damage to
engine or other machine systems.
N OT E
If engine fails to start, you must turn ignition switch to the OFF position, then back to ON
and START.
5. Turn and hold engine start switch to START. Release when engine starts.
0005-4
