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11MalagaMalaga
3408/12 & 3126 B H E U I3408/12 & 3126 B H E U I3408/12 & 3126 B H E U I3408/12 & 3126 B H E U I
22MalagaMalaga
ComponentsComponentsHigh pressure hydraulic pump
E C M
Throttlecontrol
Speed/timingsensor
InjectorPressuresensor
Temperaturesensor
3408/12 H E U I3408/12 H E U I3408/12 H E U I3408/12 H E U I
33MalagaMalaga
Oil flowOil flow
IAPsensor
3408/12 H E U I3408/12 H E U I3408/12 H E U I3408/12 H E U I
44MalagaMalaga
HEUI SystemHEUI System
3408/12 H E U I3408/12 H E U I3408/12 H E U I3408/12 H E U I
TO LUBE SYSTEM
FUEL TRANSFER
PUMP
PUMP CONTROL
VALVE
OIL FILTER
OIL COOLER
HEUI
HEUI
OIL SUMP
HYDRAULIC PRESSURE
SENSOR
HYDRAULIC TEMPERATURE
SENSOR
OIL PRESSURE SENSOR
ECM
COOL DOWN CIRCUIT
FUEL TANK
FUELTEMPERATURE
SENSOR
PRESSURE REGULATING
VALVE
SECONDARY FUEL
FILTERPRIMARY
FUEL FILTER WATER
SEPARATOR
LUBE OIL PUMP
COLD START OIL
RESERVOIR
HYDRAULIC SUPPLY
PUMP GROUP
FLUID MANIFOLD HYDRAULIC PASSAGE
FLUID MANIFOLD HYDRAULIC PASSAGE
55MalagaMalaga
Injector componentsInjector components
3408/12 H E U I3408/12 H E U I3408/12 H E U I3408/12 H E U I
Valve bodyValve body
BarrelBarrel
NozzleNozzle
66MalagaMalaga
Poppet actionPoppet action
3408/12 H E U I3408/12 H E U I3408/12 H E U I3408/12 H E U I
Poppet Poppet closedclosed
From From ECMECM
Drain Drain cyclecycle
From From ECMECM
Poppet Poppet openopen
77MalagaMalaga
Injector check valvesInjector check valves
Reverse flow check Reverse flow check valvevalve
Venting check Venting check valvevalveInlet check Inlet check
valvevalve
3408/12 H E U I3408/12 H E U I3408/12 H E U I3408/12 H E U I
88MalagaMalaga
Metering ( Prime)Metering ( Prime)
3408/12 H E U I3408/12 H E U I3408/12 H E U I3408/12 H E U I
99MalagaMalaga
Timing wheelTiming wheel
3408/12 H E U I3408/12 H E U I3408/12 H E U I3408/12 H E U I
1010MalagaMalaga
Fluid Fluid manifoldmanifold
3408/12 H E U I3408/12 H E U I3408/12 H E U I3408/12 H E U I
High pressurehydraulic oil
Coolant
Fuel supplyLube oil passage
1111MalagaMalaga
3 valve cylinder head3 valve cylinder head
3126B H E U I3126B H E U I3126B H E U I3126B H E U I
1212MalagaMalaga
Oil passageOil passage
3126B H E U I3126B H E U I3126B H E U I3126B H E U I
1313MalagaMalaga
Injector sleeveInjector sleeve
3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
1414MalagaMalaga
Component Component diagramdiagram
3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
1515MalagaMalaga
Low fuel pressureLow fuel pressure3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
1616MalagaMalaga
Injection Actuation Pressure Control Valve Injection Actuation Pressure Control Valve (IAPCV)(IAPCV)
The IAPCV controls the HEUI oil pressure
3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
1717MalagaMalaga
Injector Injector
ComponeComponentnt
3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
1818MalagaMalaga
SolenoidSolenoid
3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
1919MalagaMalaga
Poppet Valve Poppet Valve
closedclosed
3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
2020MalagaMalaga
Poppet valvePoppet valve
openopen
3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
2121MalagaMalaga
Intensifier Intensifier
piston piston
andand
plungerplunger
3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
2222MalagaMalaga
Nozzle Nozzle
assemblyassembly
3126 B H E U I3126 B H E U I3126 B H E U I3126 B H E U I
2323MalagaMalaga
H E U IH E U IH E U IH E U I
Vertical boltsVertical bolts
Injector clampInjector clamp
Horizontal boltsHorizontal bolts
Injector Injector installationinstallation
Allen screwsAllen screws
2424MalagaMalaga
H E U IH E U IH E U IH E U I
