7’’ color LCD monitor special function, MH800 same hardware with PC200-8 and D155A,AX-6
Engine system
Electronically controlled engine,
SAA12V140 - 2 banks, 12 cylinders with 140 mm bore
2 engine controllers, CM850
2 HPCR system ( DENSO Tier II ) ( high pressure common rail )
for starting system ( engine start lock function )
PPC safety lock lever
Hydraulic tank strainer proximity switch
Engine stop switch & cancel switch
Hydraulic pump system
3 tandem hydraulic pumps on PTO
2 tandem main pumps, HPV375+375 for Work Equipment
1 tandem fan pumps, HPV95+95 for cooling fans +SAL020
Fully electronic (mA-L/min.)
discharge control
a gear pump(SAL020)
for PTO lubrication
2 pump controllers, CR710
Hydraulic system
4 main pumps & 4 control valves,
HE40 with 40mm diameter spools X 17(4-4-5-4)
Fully electronic OLSS system
Current to EPC (mA) controls pump discharge amount (L/min.) proportionally.
NC function, lever stroke-pump discharge -jet sensor (Pt-Pd) converted to voltage (V) to command pump EPC (mA)
PC function, pressure-pump discharge
-pump pressure sensors (V)-pump EPC (mA)
-EPC pressure – VC valve – swash plate angle
( same system for PC800-8 )
Control (PPC) pressure system
2 SPR( Self-Pressure Reducing ) valves
2 PPC solenoids
Vacuum prevention valve for PPC valves
Switch & Solenoid valve control
Auto-deceleration & + auto-idling
Heavy lift ( 2 stage main relief valve )
Machine push up ( 2 stage safety valve )
Swing control
Boom shock-less ( damper ) control
These controls are similar to other large excavators.
Power saving
PPC pressure sensors (V)-horsepower
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