Section 4 – INSTRUMENT PANEL SECTIONS Mini-Crawler Crane M A E D A
4-12 1/2019 MC405C-3
Preheat Monitor
The monitor lights up during the preheating
operation when starting the engine.
It lights up when the starter switch is operated to
the "HEAT" (preheat) position and goes off in
several seconds to indicate the completion of
preheating.
Fig. 4-26
Engine Water Temperature Monitor
This monitor indicates errors with the engine
coolant temperature.
The temperature is normal if this monitor is OFF
during the operation.
If it lights up during the operation, it means that
the engine coolant temperature exceeded the
normal temperature.
Promptly switch the engine rotation to low idling
and wait until the monitor goes off (engine
coolant temperature goes down).
Then, stop the operation and check the water
leakage from the radiator, clogging in the radiator
core, and damage and tension of the alternator
belt.
Fig. 4-27
Engine Oil Pressure Monitor
This monitor indicates the drop in the engine oil
pressure.
If it lights up when the starter switch is turned to
the "ON" position and goes off as the engine
rotation increases after the engine is started, the
engine oil pressure is normal.
If it lights up during the operation, the engine oil
pressure has dropped.
Immediately stop the machine and check the
clogging of the engine oil filter and engine
lubricant level.
Fig. 4-28
Battery Charge Monitor
This monitor indicates errors in the battery
charge system.
If it lights up when the starter switch is turned to
the "ON" position and goes off as the engine
rotation increases after the engine is started, the
battery charge system is normal.
If it lights up during the operation, there is an
error in the battery charge system.
Immediately stop the machine and check the
tension of the alternator belt.
Fig. 4-29
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