Maeda D3001, Operation Manual, Page: 75 / 294

M A E D A Mini-Crawler Crane Section 4 – INSTRUMENT PANEL SECTIONS
3/2019 MC305C-3 4-11
Hour Meter
This meter shows the total running hours of the
machine.
Use this value as the reference for periodical
check interval.
If the engine is in operation, the meter indication
advances even if the machine is not moving.
The meter indication advances for "1" when the
machine has been running for 1 hour regardless
of the engine rotation speed.
Fig. 4-21
NOTICE: The hour meter value will continue to
increment whether the electric motor or engine is
selected to power the machine.
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. 4-22
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. 4-23
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. 4-24