Hitachi EX3600-7B Workshop Manual page 5

Symbol / Name
Abbreviation
TO Technical manual (Operational principle)
TT Technical manual (Troubleshooting)
T/M Technical manual
W, W/M Workshop manual
T4F EPA Tier 4 Final
IDU Information Display Unit
DLU Data Logging Unit
ELUF Electric Lever Control Unit for Front
ELUT Electric Lever Control Unit for Travel
MCU Monitor Control Unit
HMU Hydraulic System Monitoring Unit
CSU Contamination Sensing Unit
ECM Engine Control Module
EHU Engine Heat Balance Monitoring Unit
HTC High Temperature Cooling Circuit
LTC Low Temperature Cooling Circuit
PFU Pump Flow Control Unit
PMU Pump Monitoring Unit
ODR Operation Data Recorder
SYMBOL AND ABBREVIATION
Explanation
Workshop manual (Removal and Installation, Disassembly and
Assembly).
EPA (The United States Environmental Protection Agency) Tier
4 Final emissions regulations for Non-road mobile machines
take effect on Jan,2015.
The engine which powers the machine in this manual complies
with this regulations.
Information display controller. IDU displays the information
from each controller on the monitor.
Data logging unit. DLU records the information from each
controller.
Electric control lever controller for controlling the front
attachment operation. ELUF controls the pilot pressure which
supplies to the control valve according to the control lever
stroke.
Electric control lever controller for controlling the travel
operation. ELUT controls the pilot pressure which supplies to
the control valve according to the control lever stroke.
Controller for the alarm monitor and sub control. MCU judges
the alarms, controls the oil cooler fan, and controls auto-
lubrication control.
Hydraulic system monitoring unit. HMU monitors the condition
of the hydraulic components such as swing motor and others
and the oil cooler.
Contamination sensing unit. CSU senses contaminants in the
drain circuits of the main pump, swing motor, and travel motor.
Engine controller. ECM controls fuel injection amount
according to the machine operating condition.
Engine cooling system monitoring unit. EHU monitors the
engine cooling system condition such as HTC radiator, LTC
radiator, and others.
HTC indicates the engine cooling circuit.
LTC indicates the supercharger cooling circuit.
Pump flow rate control controller. PFU calculates the target
pump displacement of each main pump and controls each
pump flow rate.
Pump monitoring unit. PMU monitors the drain pressure of
main pump.
Operation data recorder. ODR automatically records the data
related to the detected information which has been set.
SY-1
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