Gradall 544D (9136-4003) Service Manual - Manual (Page 24)

Normal Engine Operation
Observe gauges frequently to be sure all engine systems are functioning
properly.
The voltmeter shows the “charge/discharge” state of the battery charging
system. With the engine running, meter should indicate 13.5 to 14 volts. With
engine stopped, meter indicates battery charge (12 volts). The alternator
indicator light glows (red) to indicate alternator is not charging.
Be alert for unusual noises or vibration. When an unusual condition is
noticed, park machine in safe position and perform standard shut-down
procedure. See Page 1.1. Report condition to your supervisor or maintenance
personnel.
Avoid prolonged idling. Idling causes engine temperature to drop and this
permits formation of heavy carbon deposits and dilution of lubricating oil by
incompletely-burned fuel. If the engine is not being used, turn it off.
Stopping the Engine
• To stop engine, perform standard shut-down procedure.
• Operate engine at low idle for 3 to 5 minutes before turning it off.
This allows engine coolant and lubricating oil to carry excessive heat away
from critical engine areas, including turbocharger.
• Do not “gun” engine before shut down: This practice causes incompletely-
burned fuel to remove oil film from cylinder walls and dilute lubricant in
crankcase.
John Deere Engine Shut-Down Protection Feature
The feature monitors coolant temperature, oil pressure and charge-air
temperature. If any of the listed items cause a fault in the system the check
engine light will illuminate and the engine will shut down after 30 seconds.
Within that 30 second period, lower the boom and apply parking brake. Report
condition to your supervisor or maintenance personnel.
6.1
Always keep engine cover closed
while engine is running.
CAUTION !
NOTE!
In the event of needing to delay a
shutdown, See “Shutdown
Override Switch,” Page 3.2.
NOTE!
In the event of engine or hydraulic
failure, parking brakes can be
released for towing. See “To
Release Parking Brake,” Page
16.1.