caterpillar

1. CONTROLES DE MOTOR 3408E/3412
HYDRAULIC ELECTRONIC UNIT INJECTION
(HEUI)
©1997 Caterpillar Inc.
- 1 -

2. - 2 -

3. VALVULA DE
CONTROL
DE BOMBA
FILTRO DE
ACEITE
ENFRIADOR
DE ACEITE
HEUI
HEUI
SUMIDERO
DE ACEITE
SENSOR DE
PRESION
DE ACEITE
SENSOR DE
TEMPERATURA
DE ACEITE
RESERVORIO
DE ACEITE
ARRAQUE EN FRIO SENSOR DE
PRESION DE ACEITE
ECM
GRUPO DE
BOMBA DE
SUMINISTRO
DE ACEITE
CIRCUITO
COOL DOWN
TANQUE DE COMBUSTIBLE
SENSOR
TEMPERATURA
DE COMBUST.
VALVULA
REGULADORA DE
PRESION
FILTRO
SECUNDARIO
DE COMBUST.
BOMBA DE
TRANSFERENCIA
DE COMBUST.
FILTRO PRIMARIO
Y SEPARADOR
DE AGUA
DE PETROLEO
BOMBA DE
LUBRICACION
AL SISTEMA
DE LUBRICACION
SISTEMA DE COMBUSTIBLE HEUI 3408E/3412E
FLUID MANIFOLD
HYDRAULIC PASSAGE
FLUID MANIFOLD
HYDRAULIC PASSAGE
- 3 -

4. - 4 -

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6. - 6 -

7. - 7 -

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9. - 9 -

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12. - 12 -

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16. - 16 -

17. - 17 -

18. ADEM II
MODULO DE
CONTROL
ELECTRONICO
(ECM)
PERNO DE
TIERRA
15 AMP
BREAKER
RELE
PRINCIPAL
KEY
SWITCH
SENSOR DE PRESION A LA SALIDA DEL TURBO
SENSOR SECUNDARIO
DE SPEED/TIMING
SENSOR PRIMARIO
DE SPEED/TIMING
SENSOR DE
PRESION DE ACEITE
24 V
CONECTOR
DE INTERFACE
A LA MAQUINA
HARNESS DE
MOTOR
VALVULA DE CONTROL DE LA BOMBA
SENSOR DE TEMP DE REFRIGERANTE
SENSOR DE PRESION ATMOSF.
SENSOR DE PRESION DE ACEITE
SENSOR DE TEMPERATURA DE ACEITE
SENSOR DE TEMP.DE COMBUSTIBLE
SWITCH DE FLUJO DE REFRIGERANTE
8 O 12
INYECTORES
ACCESO AL
SENSOR DE SERVICIO TDC
PANELDE
INSTRUMENTOS
CONTROL DE AUTO RETARDADOR
CONTROL DE TRANSMISION EPTC II
HERRAMIENTA DE SERV. ELECTRONICO
CAT DATA LINK
VENTILADOR
FAN SPEED SENSOR
VALVVULA DE CONTROL DE VENTILADOR
SENSOR DE PRESION INGRESO AL TURBO
SWITCHESS DE ACELERADOR DE RESPALDO, DE HABILITACION DE
BAJA EN VACIO ELEVADO,Y SWITCH DE APAGADO A NIVEL DE PISO
SENSOR DE
ACELERADOR PEDAL DE
ACELERADOR
SWITCH DE DESCONEXION
SISTEMA3408E/3412E HEUI
DIAGRAMA DE COMPONENTES
HARNESS DE
MAQUINA
M a t e r i a l d e E s t u d i a n t e

19. SISTEMA DE CONTROL ELECTRONICO
- 19 -

20. - 20 -

21. - 21 -

22. - 22 -

23. • PRUEBA DE SOLENOIDES DE INYECTOR
• CORTE DE CILINDROS
• PRUEBA AUTOMATICA DE INYECTORES
METODOS PARA PROBAR INYECTORES
HEUI
- 23 -

24. LOGICA DE CONTROL HEUI
VELOCIDAD DE MOTOR
CANTIDAD DE COMB. COMB. RPM
MODO FRIO
SELECC.
SINCRONIZ.
CONVIERTE A
SINCRONIZ.
DESEADA
TEMPERATURA
ACEITE
CONTROL DE SINCRONIZACION
GRADOS BTDC SINCRONIZ.
DESEADA
BTDC
SINCRONIZ.
FORMA DE ONDA DE LA
SINCRONIZ. DE LA INYECCION
- 24 -

25. GOBERNADOR
ELECTRONICO
MAPAS
TORQUE
MAPAS
FRC
SENSORES DE PRESION
ATMOSFERICA Y DE
SALIDA DEL TURBO
LOGICA DE
CONTROL
DE MOTOR
ACELERADOR
SHUTDOWNS
CONTROL DE
ACTUACION
DE INYECCION
RPM DE MOTOR
TDC
8
7
6
5
4
3
2
1
CONTROL
INYECCION
COMBUST.
A LA VALVULA DE
CONTROL DE BOMBA
SEÑALES A
LOS INYECTORES
DE COMBUSTIBLE
SEÑAL DE
SPEED/TIMING
RPM DE MOTOR
SENSORES DE
SPEED/TIMING
RUEDA DE
SINCRONIZACION
RPM DE MOTOR
ECM
GOBERNADOR ELECTRONICO 3408E/3412E
SENSORES DE
PRESION Y DE TEMP.
DE ACEITE
M a t e r i a l d e l E s t u d i a n t e

26. ADEM II
MODULO DE
CONTROL
ELECTRONICO
(ECM)
PERNO DE
TIERRA
15 AMP
BREAKER
RELE
PRINCIPAL
KEY
SWITCH
SENSOR DE PRESION A LA SALIDA DEL TURBO
SENSOR SECUNDARIO
DE SPEED/TIMING
SENSOR PRIMARIO
DE SPEED/TIMING
SENSOR DE
PRESION DE ACEITE
24 V
CONECTOR
DE INTERFACE
A LA MAQUINA
HARNESS DE
MOTOR
VALVULA DE CONTROL DE LA BOMBA
SENSOR DE TEMP DE REFRIGERANTE
SENSOR DE PRESION ATMOSF.
SENSOR DE PRESION DE ACEITE
SENSOR DE TEMPERATURA DE ACEITE
SENSOR DE TEMP.DE COMBUSTIBLE
SWITCH DE FLUJO DE REFRIGERANTE
8 O 12
INYECTORES
TDC SERVICE
PROBE ACCESS
PANELDE
INSTRUMENTOS
CONTROL DE AUTO RETARDADOR
CONTROL DE TRANSMISION EPTC II
HERRAMIENTA DE SERV. ELECTRONICO
CAT DATA LINK
VENTILADOR
FAN SPEED SENSOR
VALVVULA DE CONTROL DE VENTILADOR
SENSOR DE PRESION INGRESO AL TURBO
SWITCHESS DE ACELERADOR DE RESPALDO, DE HABILITACION DE
BAJA EN VACIO ELEVADO,Y SWITCH DE APAGADO A NIVEL DE PISO
SENSOR DE
ACELERADOR PEDAL DE
ACELERADOR
SWITCH DE DESCONEXION
SISTEMA3408E/3412E HEUI
DIAGRAMA DE COMPONENTES
HARNESS DE
MAQUINA
M a t e r i a l d e l E s t u d i a n t e

27. 39
32
29
38
18
12
732-PK
996-GN
998-BR
999-WH
F723-PK
F724-PU
VELOCIDAD SECUNDARIA DE MOTOR
+V SINCRONIZACION
RETORNO DIGITAL
VELOCIDAD PRIMARIA DE MOTOR
CAL DE TIMING +
CAL DE TIMING -
ECM
(3408E/3412 E)
P2 J2
A
B
C
OR
BK
WH
SENSOR
SPEED/TIMING
SECUNDARIO
A
B
C
OR
BK
WH
SENSOR
SPEED/TIMING
PRIMARIO
CONECTOR DE
CALIBRACION DE SINCRONIZACION
1
2
SENSORES DE SPEED/TIMING
P44 J44
P20 J20
P26 P1 J1
- 27 -

28. - 28 -

29. 4
3
6
5
7
2
1
8
REF
REF
REF
REF
REF
REF
REF
REF
TDC
TDC
TDC
TDC
TDC
TDC
TDC
DIENTE
50/50
ROTACION DE LA
RUEDA DE SINCRONIZACION
TDC CILINDRO No. 1
RANGO DE
CALIBRACION DE SINCRONIZACION
RANGO ± 10°
SENSOR
SPEED/TIMING
PRIMARIO
SENSOR
SPEED/TIMING
SECUNDARIO
RUEDA DE SINCRONIZACION
- 29 -

30. A B C D E F G
ROTACION DE LA RUEDA DE SINCRONIZACION
H
80/20 % 80/20 % 80/20 %80/20 % 50/50%80/20 % 80/20 %
TABLA DE DIENTES DE ENGRANAJE DE SINCRONIZACION
ENTRADA
A TABLA
CILINDRO
DE REFERENCIA
A
B
C
D
E
F
G
H
80 %
80 %
80 %
80 %
80 %
80 %
80 %
50 %
ARRANQUE
NINGUNO IDENTIFICADO
PORCENTAJE
PWM
- 30 -

31. ROTACION DE LA RUEDA DE SINCRONIZACION
CIL NO. 3
BORDE DE
REFERENCIA
CIL NO. 4
TDC
CIL NO. 4
BORDE DE
REFERENCIA
CIL NO. 8
BORDE DE
REFERENCIA
CIL NO. 3
TDC
TABLA DE DIENTES DE ENGRANAJE DE SINCRONIZACION
CILINDRO
DE REFERENCIA
80 %
80 %
80 %
80 %
80 %
80 %
80 %
50 %
DESPUES DE RECONOCER EL PATRON
NO
CIL NO. 3
NO
NO
CIL NO. 4
NO
NO
CIL NO. 8
ENTRADA
A TABLA
A
B
C
D
E
F
G
H
PORCENTAJE
PWM
A B C D E F G H
- 31 -

32. TABLA DE DIENTES DE ENGRANAJE DE SINCRONIZACION
PORCENTAJE
PWM
CILINDRO
DE REFERENCIA
80 %
80 %
80 %
80 %
80 %
80 %
80 %
50 %
OPERACION NORMAL
NO
CIL NO. 3
NO
NO
CIL NO. 4
NO
NO
CIL NO. 8
CIL NO. 4
(REFERENCIA)
CIL NO. 4
ACTUAL TDC
(CALIBRATO)
62° BTDC (EEPROM)
SINC. DESEADA
NO. 4
INYECCION
ENTRADA
A TABLA
ROTACION DE LA RUEDA DE SINCRONIZACION
A
B
C
D
E
F
G
H
A B C D E F G H
CIL NO. 3
(REFERENCIA)
CIL NO. 3
ACTUAL TDC
(CALIBRADO)
62° BTDC (EEPROM)
SINC. DESEADA
DEMORA NO 3
INYECCION
DEMORA
TDC
ASUMIDO
TDC
ASUMIDO
- 32 -

33. 39
32
29
38
18
12
732-PK
996-GN
998-BR
999-WH
F723-PK
F724-PU
SECONDARY ENGINE SPEED
+V TIMING
DIGITAL RETURN
PRIMARY ENGINE SPEED
TIMING CAL +
TIMING CAL -
ECM
(3408E/3412E)
P2 J2
A
B
C
OR
BK
WH
SECONDARY
SPEED/TIMING
SENSOR
A
B
C
OR
BK
WH
PRIMARY
SPEED/TIMING
SENSOR
TIMING CALIBRATION
CONNECTOR
P26
SENSOR DE CALIBRACION
DE SINCRONIZACION
SENSOR DE CALIBRACION DE SINCRONIZACION
P44 J44
P20 J20
P1 J1
1
2
- 33 -

34. DISTANCIA DE BORDE DE REFERENCIA AL TDC
BORDE DE
REFERENCIA CIL. NO. 1 TDC
ASUMIDO
CIL. NO. 1 TDC
ACTUAL
TIMING
REFERENCE
OFFSET
MAXIMUM TIMING REFERENCE OFFSET ± 10 DEGREES
SEÑAL DEL SENSOR
DE CALIBRACION DE SINCRONIZACION
RUEDA DE
SINCRONIZACION
CALIBRACION DE SINCRONIZACION
+10°
± 10°
-10°
- 34 -

35. FORMA DE ONDA DE LA CORRIENTE DE INYECCION
0 1 2 3 4
CURRENTFLOW
TIEMPO (MILISEGUNDOS)
CORRIENTE PICO DE ACCIONAMIENTO
CORRIENTE PICO DE SOSTENIMIENTO
UN CICLO
5
- 35 -

36. MOVIMIENTO DE LA VALVULA POPPET
0 1 2 3 4
CURRENTFLOW
TIEMPO (MILISEGUNDOS)
CORRIENTE
POPPET
LIFT
5
- 36 -

37. FORMA DE ONDA Y CARACTERISTICAS DE RESPUESTA
0 1 2 3 4
CURRENTFLOW
TIEMPO (MILISEGUNDOS)
CORRIENTE
POPPET
LIFT
RAPIDEZ DE
INYECCION
INICIO DE LA
INYECCION
DURACION
5
FIN DE
INYECCION
- 37 -

38. LIMITES DEL SISTEMA DE COMBUSTIBLE
• Potencia Maxima
• MaximoTorque
• Relacion aire/combustible
• Limite de modo en frio
• Combustible en el arranque
- 38 -

39. MODOS EN FRIO DEL SISTEMA DE COMBUSTIBLE
• Control de velocidad
• Limitacion de combustible
• Sincronizacion de la inyeccion
• Presion de actuacion de inyeccion
• Inyeccion de eter
- 39 -

40. DERATEOS DEL SISTEMA DE COMBUSTIBLE
• Compensacion automatica por altura
• Compensacion automatica por filtro
• Advertencia de derateo de motor
- 40 -

41. SISTEMA DE INYECCION DE COMBUSTIBLE
- 41 -

42. VALVULA DE
CONTROL
DE BOMBA
FILTRO DE
ACEITE
ENFRIADOR
DE ACEITE
HEUI
HEUI
SUMIDERO
DE ACEITE
SENSOR DE
PRESION
DE ACEITE
SENSOR DE
TEMPERATURA
DE ACEITE
RESERVORIO
DE ACEITE
ARRANQUE EN FRIO SENSOR DE
PRESION DE ACEITE
ECM
GRUPO DE
BOMBA DE
SUMINISTRO
DE ACEITE
CIRCUITO
COOL DOWN
TANQUE DE COMBUSTIBLE
SENSOR
TEMPERATURA
DE COMBUST.
VALVULA
REGULADORA DE
PRESION
FILTRO
SECUNDARIO
DE COMBUST.
BOMBA DE
TRANSFERENCIA
DE COMBUST.
FILTRO PRIMARIO
Y SEPARADOR
DE AGUA
DE PETROLEO
BOMBA DE
LUBRICACION
AL SISTEMA
DE LUBRICACION
SISTEMA DE COMBUSTIBLE HEUI 3408E/3412E
FLUID MANIFOLD
HYDRAULIC PASSAGE
FLUID MANIFOLD
HYDRAULIC PASSAGE
- 4 2 -

43. - 43 -

44. - 44 -

45. AL SISTEMA
DE LUBRICACION
BOMBA DE
TRANSFERENCIA
DE COMBUST.
VALVULA DE
CONTROL
DE BOMBA
FILTRO DE
ACEITE
SISTEMA DE COMBUSTIBLE HEUI 3408E/3412E
ENFRIADOR
DE ACEITE
HEUI
HEUI
OIL
SUMP
SENSOR DE
PRESION
DE ACEITE
SENSOR DE
TEMPERATURA
DE ACEITE
SENSOR DE
PRESION DE ACEITE
ECM
COOL DOWN
CIRCUIT
SUMINISTRO DE BAJA PRESION DE ACEITE
TANQUE DE COMBUSTIBLE
SENSOR
TEMPERATURA
DE COMBUST.
VALVULA
REGULADORA DE
PRESION
FILTRO
SECUNDARIO
DE COMBUST.
FILTRO PRIMARIO
Y SEPARADOR
DE AGUA
DE PETROLEO
BOMBA DE
LUBRICACION
RESERVORIO
DE ACEITE
ARRANQUE EN FRIO
GRUPO DE
BOMBA DE
SUMINISTRO
DE ACEITE
FLUID MANIFOLD
HYDRAULIC PASSAGE
FLUID MANIFOLD
HYDRAULIC PASSAGE
- 45 -

46. AL SISTEMA
DE LUBRICACION
BOMBA DE
TRANSFERENCIA
DE COMBUST.
VALVULA DE
CONTROL
DE BOMBA
FILTRO DE
ACEITE
SISTEMA DE COMBUSTIBLE HEUI 3408E/3412E
ENFRIADOR
DE ACEITE
HEUI
HEUI
SUMIDERO
DE ACEITE
SENSOR DE
PRESION
DE ACEITE
SENSOR DE
TEMPERATURA
DE ACEITE
SENSOR DE
PRESION DE ACEITE
GRUPO DE
BOMBA DE
SUMINISTRO
DE ACEITE
COOL DOWN
CIRCUIT
ACEITE A ALTA PRESION
SENSOR
TEMPERATURA
DE COMBUST.
ECM
TANQUE DE COMBUSTIBLE
VALVULA
REGULADORA DE
PRESION
FILTRO
SECUNDARIO
DE COMBUST.
FILTRO PRIMARIO
Y SEPARADOR
DE AGUA
DE PETROLEO
BOMBA DE
LUBRICACION
RESERVORIO
DE ACEITE
ARRANQUE EN FRIO
FLUID MANIFOLD
HYDRAULIC PASSAGE
FLUID MANIFOLD
HYDRAULIC PASSAGE
- 46 -

47. AL SISTEMA
DE LUBRICACION
BOMBA DE
TRANSFERENCIA
DE COMBUST. VALVULA
REGULADORA DE
PRESION
VALVULA DE
CONTROL
DE BOMBA
FILTRO DE
ACEITE
3408E/3412E HEUI FUEL SYSTEM
ENFRIADOR
DE ACEITE
BOMBA DE
LUBRICACION
HEUI
HEUI
SUMIDERO
DE ACEITE
SENSOR DE
PRESION
DE ACEITE
HYDRAULIC
TEMPERATURE
SENSOR
OIL PRESSURE
SENSOR
ECM
COOL DOWN
CIRCUIT
SUMINISTRO DE PETROLEO A BAJA PRESION
SENSOR
TEMPERATURA
DE COMBUST.
TANQUE DE COMBUSTIBLE
FILTRO
SECUNDARIO
(2 MICRON)
FILTRO PRIMARIO
Y SEPARADOR
DE AGUA
DE PETROLEO
COLD START
OIL
RESERVOIR
HYDRAULIC
SUPPLY
PUMP
GROUP
FLUID MANIFOLD
HYDRAULIC PASSAGE
FLUID MANIFOLD
HYDRAULIC PASSAGE
- 47 -

48. SUMINISTRO DE
COMBUSTIBLE A BAJA PRESION
MANGUITO DE INYECTOR
EN LA CULATA
MANIFOLD DE
SUMINISTRO DE FLUIDO
INYECTOR
ADAPTADOR PARA
INYECCION DE ACEITE
JUMPER
ABRAZADERA DEL INYECTOR
PASAJE DE ACEITE
A ALTA PRESION
CULATA
ROCKER ARM BASE
PASAJE DE ACEITE DE LUBRICACION
BLOQUE DE CILINDROS
REFRIGERANTE
ARANDELA DE METAL
FLUJO DE FLUIDO POR LOS INYECTORES ACEITE A ALTA PRESION

49. MANIFOLD DE
SUMINISTRO DE FLUIDO
INYECTOR
CULATA
SELLO O´RING
INFERIOR DEL INYECTOR
SELLO O´RING
SUPERIOR DEL INYECTOR
SUMINISTRO DE COMBUSTIBLE AL INYECTOR
CONTACTO
METAL A METAL
SUMINISTRO DE COMBUSTIBLE
A BAJA PRESION
CAMISETA DEL INYECTOR
LADO DE CULATA
SELLO O´RING
SUPERIOR DEL MANGUITO
SELLO O´RING
INFERIOR DE MANGUITO
- 49 -

50. - 50 -

51. PASAJE DE SUMINISTRO
DE COMBUSTIBLE A BAJA PRESION
MANGUITO DE
INYECTOR, CULATA
PASAJE HIDRAULICO
DE ALTA PRESION
BASE DE
BALANCIN
PASAJE DE ACEITE DE
LUBRICACION
RANURAS DE
EXTRACCION
SELLOS DE COMBUSTIBLE
MANIFOLD DE SUMINISTRO DE COMBUSTIBLE
- 51 -

52. - 52 -

53. FORMA DE ONDA DE LA CORRIENTE DE INYECCION
0 1 2 3 4
CURRENTFLOW
TIEMPO (MILSEGUNDOS
CORRIENTE PICO INICIAL
CORRIENTE DE SOSTENIMIENTO
UN CICLO
5
- 53 -

54. CARACTERISTICAS DE LA ONDA Y RESPUESTA
0 1 2 3 4
CURRENTFLOW
TIME (MILLISECONDS)
CORRIENTE
APERTURA DE
VALVULA
INYECCION
RATE
INICIO DE
INYECCION
DURACION
5
FIN DE
INYECCION
- 54 -

55. - 55 -

56. UNIDAD INYECTORA HEUI
3 GRUPOS PRINCIPALES
GRUPO DE CUERPO
DE VALVULA
GRUPO DE BARRIL
GRUPO DE BOQUILLA
-

57. STOP
PINPLUNGER SPRING SEAL BARREL BALL
DOWEL
SEAL
INTENSIFIER PISTON
RETAINER RING
WASHER
STOP
PLATE
CHECK
PLATE
BALL
STOP
DOWEL
SPRING
LIFT
SPACER
SLEEVE
DOWEL
CHECK
TIP CASE
POPPET SPRING SLEEVE SHIM SEAL
ADAPTER BOLT
SPACER
ARMATURE
SCREW
SOLENOID
ASSEMBLY
SCREW
BODY
VALVE BODY GROUP
BARREL GROUP
NOZZLE GROUP
3408E/3412E HEUI INJECTOR
COMPONENTS
- 57 -

58. LAINA
BARRIL
PISTON
VALVULA
VALVULA CHECK DE
INGRESO DE COMBUSTIBLE
PIN
ESPACIADOR
ADAPTADOR
ESPACIADOR
ARMADURA
SOLENOIDE
ARANDELA
VARILLA (PLUNGER)
MANGUITO
MANGUITO
UNIT INJECTOR
COMPONENTS
SELLO INFERIOR DE COMBUSTIBLE
CUERPO DE VALVULA
SELLO SUPERIOR DE COMBUSTIBLE
BOQUILLA
CHECK
-

59. HORIZONTAL
BOLTS
JUMPER TUBE
INJECTOR CLAMP
VERTICAL
BOLTS
INJECTOR INSTALLATION
ALLEN
SCREWS
INJECTOR OIL
ADAPTOR
- 59 -

60. SOLENOID DE-ENERGIZED SOLENOID ENERGIZED
POPPET VALVE CLOSED POPPET VALVE OPEN
ARMATURE
SCREW
POPPET
SPRING
INLET
VALVE SEAT
SOLENOID
POPPET VALVE
ARMATURE
EXHAUST
VALVE SEAT
VALVE BODY GROUP
- 60 -

61. FUEL INLET
CHECK VALVE
INTENSIFIER
PISTON
PLUNGER
FUEL TO
NOZZLE
BARREL
BARREL GROUP
FUEL PRESSURE INCREASE
REVERSE FLOW
CHECK VALVE
FUEL FROM
TRANSFER PUMP
SUPPLY OIL
- 61 -

62. VIEW OF STOP PLATE &
REVERSE FLOW CHECK VALVE
REVERSE FLOW
CHECK VALVE
FUEL
ATOMIZATION
NOZZLE GROUP
CHECK VALVE
- 62 -

63. INLET
VALVE SEAT
SOLENOID
POPPET VALVE
ARMATURE
EXHAUST
VALVE SEAT
SOLENOID DE-ENERGIZED
VALVE BODY GROUP
- 63 -

64. SHIM
BARREL
PISTON
VALVE
BALL
PIN
SPACER
ADAPTER
SPACER
ARMATURE
SOLENOID
WASHER
PLUNGER
SLEEVE
SLEEVE
NOZZLE
BODY
UNIT INJECTOR
END OF INJECTION
CHECK
- 64 -

65. BARREL GROUP
REFILLING THE BARREL
BARREL
PISTON
FUEL INLET
CHECK VALVE
PIN
SPACER
WASHER
PLUNGER
SLEEVE
NOZZLE
NOZZLE CHECK
VALVE
FUEL EDGE
FILTER
- 65 -

66. REVERSE FLOW
CHECK VALVE
EDGE FILTER
EDGE FILTER
FUEL INLET
CHECK VALVE
FUEL INLETFUEL INLET
- 66 -

67. PRIME INJECTION RATE SHAPING
0 1 2 3 4
TIME (MILLISECONDS)
5
PRIME = PRE-INJECTION METERING INJECTION RATE
DURATIONSTART OF INJECTION
- 67 -

68. CROSS SECTION
OF PLUNGER
PRIME RATE
SHAPING PASSAGE
PLUNGER
BARREL
SPILL
PORT
FUEL TO
NOZZLE GROUP
START OF INJECTION PRESSURE DROP
FINAL
PRESSURE INCREASE
BARREL GROUP
PRIME RATE SHAPINGOIL FLOW
- 68 -

69. BARREL GROUP
VENTING INTERNAL LEAKS
INTENSIFIER
PISTON SEAL
VENTING
CHECK VALVE
BARREL
INTENSIFIER
PISTON
- 69 -

70. BARREL GROUP NOZZLE GROUPFUEL INLET
CHECK VALVE
NOZZLE
CHECK VALVE
FUEL
ATOMIZATION
VENTING
CHECK VALVE
REVERSE FLOW
CHECK VALVE
INJECTOR CHECK VALVES
- 70 -

71. VACIO TORQUE PICO RATEADO
INJECTIONPRESSURE
SISTEMA DE COMBUSTIBLE
ACCIONADO MECANICAMENTE
HEUI
VELOCIDAD DE MOTOR
CONTROL DE PRESION HIDRAULICA DE INYECCION

72. - 72 -

73. - 73 -

74. PUERTO DE CEBADO
ORIFICIO
RESERVORIO
PLATO BASCULANTE
BOMBA DE TRANSFERENCIA
VALVULA
COMPENSADORA
BOMBA HEUI
BASE DE LA VALVULA
AL DRENAJE

75. - 75 -

76. - 76 -

77. 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
COOL DOWN BYPASS CIRCUIT
FUEL TANK
FUEL
TEMPERATURE
SENSOR
PRESSURE
REGULATING
VALVE
SECONDARY
FUEL
FILTER
LUBE OIL
PUMP
PRIMARY
FUEL FILTER
WATER
SEPARATOR
FLUID MANIFOLD
HYDRAULIC PASSAGE
HYDRAULIC
SUPPLY
PUMP
GROUP
COLD START
OIL
RESERVOIR
FLUID MANIFOLD
HYDRAULIC PASSAGE
DRAIN
.020 IN.
ORIFICE
- 77 -

78. - 78 -

79. CHECKFITTING SPRINGVALVE BLOCK SEAT
REVERSE FLOW CHECK VALVE
FROM
PUMP
TO
INJECTORS
SEAT
(END VIEW)
- 79 -

80. - 80 -

81. - 81 -

82. TO LUBE
SYSTEM
PUMP
CONTROL
VALVE
OIL
FILTER
3408E/3412E HEUI FUEL SYSTEM
HYDRAULIC SYSTEM OPERATION
OIL
COOLER
LUBE OIL
PUMP
HEUI
HEUI
OIL
SUMP
HYDRAULIC
PRESSURE
SENSOR
HYDRAULIC
TEMPERATURE
SENSOR
OIL PRESSURE
SENSOR
HYDRAULIC
SUPPLY
PUMP
GROUP
COOL DOWN
CIRCUIT
FUEL TANK
FUEL
TEMPERATURE
SENSOR
PRESSURE
REGULATING
VALVE
SECONDARY
FUEL
FILTER
FUEL
TRANSFER
PUMP
FLUID MANIFOLD
HYDRAULIC PASSAGE
COLD START
OIL
RESERVOIR
PRIMARY
FUEL
FILTER
ECM
FLUID MANIFOLD
HYDRAULIC PASSAGE
- 82 -

83. AL SISTEMA DE
LUBRICACION
AL MANIFOLD
DERECHO
AL MANIFOLD
IZQUIERDO
RESERVORIO DE
ARRANQUE EN FRIO
SUMIDERO DE ACEITE
VALVULA DE
CONTROL
DE BOMBA
CARRETE
SENSADO
DE CARGA
CARRETE
LIMITADOR
DE PRESION
DRENAJE DE
CARCAZA DE BOMBA
SOLENOID
(ENERGIZED)
PISTON DE CONTROL
DE DESPLAZAMIENTO
SISTEMA DE CONTROL HIDRAULICO HEUI
ARRANQUE
VALVULA CHECK
BOMBA DE SUMINISTRO

84. CARRETE LIMITADOR DE PRESION
VALVULA CHECK
VALVULA DE CONTROL
DE BOMBA
ORIFICIO DE DRENAJE
ORIFICIO
AL
DRENAJE DE
CARCAZA
CARRETE DE SENSADO DE CARGA
DEL PISTON DE CONTROL DE
DESPLAZAMIENTO
VALVULAS CHECK
DE FLUJO EN REVERSA
ARRANQUE
CONJUNTO DE COMPENSADOR
AL DRENAJE DE LA CARCAZA

85. TO LUBE
SYSTEM
TO RIGHT OIL
MANIFOLD
TO LEFT OIL
MANIFOLD
COLD START
RESERVIOR
OIL SUMP
PUMP
CONTROL
VALVE
LOAD
SENSING
SPOOL
PRESSURE
LIMITER
SPOOL
PUMP
CASE DRAIN
SOLENOID
(DE-ENERGIZED)
HEUI HYDRAULIC CONTROL SYSTEM
DESTROKE
CHECK VALVE
DISPLACEMENT
CONTROL PISTON
SUPPLY PUMP
- 85 -

86. PUMP
CONTROL VALVE
DRAIN ORIFICE
TO DISPLACEMENT
CONTROL PISTON
TO CASE DRAIN
PRESSURE
LIMITER SPOOL
CHECK VALVE
ORIFICE
LOAD SENSING
SPOOL
DESTROKE
COMPENSATOR ASSEMBLY
- 86 -

87. TO LUBE
SYSTEM
TO RIGHT OIL
MANIFOLD
TO LEFT OIL
MANIFOLD
COLD START
RESERVIOR
OIL SUMP
PUMP
CONTROL
VALVE
LOAD
SENSING
SPOOL
PRESSURE
LIMITER
SPOOL
PUMP
CASE DRAIN
SOLENOID
(ENERGIZED)
HEUI HYDRAULIC CONTROL SYSTEM
UPSTROKE
CHECK VALVE
DISPLACEMENT
CONTROL PISTON
SUPPLY PUMP
- 87 -

88. PRESSURE
LIMITER SPOOL
CHECK VALVE
ORIFICE
LOAD SENSING
SPOOL
PUMP
CONTROL VALVE
DRAIN ORIFICE
FROM
DISPLACEMENT
CONTROL PISTON
TO CASE DRAIN
UPSTROKE
COMPENSATOR ASSEMBLY
- 88 -

89. TO LUBE
SYSTEM
TO RIGHT OIL
MANIFOLD
TO LEFT OIL
MANIFOLD
COLD START
RESERVIOR
OIL SUMP
PUMP
CONTROL
VALVE
LOAD
SENSING
SPOOL
PRESSURE
LIMITER
SPOOL
PUMP
CASE DRAIN
SOLENOID
(DE-ENERGIZED)
HEUI HYDRAULIC CONTROL SYSTEM
PRESSURE LIMITER OPERATION
DISPLACEMENT
CONTROL PISTON
SUPPLY PUMP
PLUGGED
ORIFICE
- 89 -

90. PRESSURE LIMITER
SPOOL
CHECK VALVE
ORIFICE
LOAD SENSING
SPOOL
PUMP
CONTROL VALVE
DRAIN ORIFICE
TO
DISPLACEMENT
CONTROL PISTON
TO CASE DRAIN
PLUGGED
ORIFICE
PRESSURE LIMITER OPERATION
COMPENSATOR ASSEMBLY
- 90 -

91. ADAPTER CAGE
RINGSHELLPIN
STATOR
SEAL SEAT
POPPET
VALVE
SOLENOIDARMATURE
STOP
TO
CASE DRAIN
FROM LOAD
SENSING SPOOL
VALVE
VALVE
BLOCK
NO CURRENT FLOW
COIL
ASSEMBLY
PUMP CONTROL VALVE
EDGE FILTER
SPRING
RETAINER
- 91 -

92. ADAPTADOR JAULA
GCORAZA O´RINGPIN
ESTATOR
SELLO ASIENTO
VALVULA
POPPET
SOLENOIDEDARMADURA
DETENCION
DRENAJE DE CARCAZA
BLOQUE DE
VALVULA
CONJUNTO DE
BOBINA
FLUJO ALTO DE CORRIENTE
VALVULA DE CONTROL DE BOMBA
FILTRO DE BORDE
RESORTE DE
RETENCION
DE LA VALVULA
DE SENSADO DE
CARGA
- 92 -

93. HEUI SYSTEM POWER SUPPLIES
• ECM: 24 VOLTS
• INJECTORS: 105 VOLTS
• ANALOG SENSORS: 5 VOLTS
• SPEED/TIMING SENSORS: 12.5 VOLTS
• DIGITAL SENSORS: 8 VOLTS
• PUMP CONTROL VALVE: 0 to 24 VOLTS
- 93 -

94. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM)
GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
PUMP
CONTROL VALVE
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
INSTRUMENT
PANEL
AUTO RETARDER CONTROL
EPTC II TRANSMISSION CONTROL
ELECTRONIC SERVICE TOOL
CAT DATA LINK
FAN
FAN SPEED SENSOR
FAN CONTROL VALVE
TURBO INLET PRESSURE SENSOR
THROTTLE BACK-UP, ELEVATED LOW IDLE ENABLE,
AND GROUND LEVEL SHUTDOWN (2) SWITCHES
THROTTLE
SENSOR
ACCELERATOR
PEDAL
DISCONNECT SWITCH
3408E/3412E HEUI SYSTEM
ECM POWER SUPPLY COMPONENTS
MACHINE
HARNESS
- 94 -

95. 05
11
04
06
23
ECM
(3408E/3412E)
(-) BATTERIA
(-) BATTERIA
(+) BATTERIA
(+) BATTERIA
KEY SWITCH ON
229-BK-14
229-BK-14
150-RD-14
150-RD-14
113-OR
1
2
26
24 VOLTIOS DC
(+)
(-)
PERNO A TIERRA
EN EL MOTOR
CIRCUIT BREAKER
BATTERIA
R
C
S
B ST
OFF
ON
308-YL
200-BK
105-RD
SWITCH DE ARRANQUE
112-PU
117-RD
113-OR
15 A
10 AMP
P3 J3
P1 J1
CIRCUITO DE SUMINISTRO DE ENERGIA AL ECM
SWITCH DE
DESCONEXION

96. 39
32
29
38
18
12
732-PK
996-GN
998-BR
999-WH
F723-PK
F724-PU
VELOC. SEC. DE MOTOR
+V TIMING
DIGITAL RETURN
VELOC.PRIM DE MOTOR
TIMING CAL +
TIMING CAL -
ECM
(3408E/3412E)
P2 J2
A
B
C
OR
BK
WH
SENSOR
SPEED/TIMING
SECUNDARIO (LH)
A
B
C
OR
BK
WH
SENSOR
SPEED/TIMING
PRIMARIO (RH)
SUMINISTRO DEPOTENCIA A LOS SENSORES DE VELOCIDAD
12.5 ± 1 VOLTS
P44 J44
P20 J20
P1 J1

97. 16
05
32
A701-GY
F726-YL
A703-BR
F726-YL
P2 J2
INJECTOR WIRING SCHEMATIC
SOLENOID 1 POWER
SOLENOID 1/3 RETURN
SOLENOID 3 POWER
ECM
(3408/3412E)
40
11
34
A702-PU
F727-BU
A704-GN
F727-BU
SOLENOID 2 POWER
SOLENOID 2/4 RETURN
SOLENOID 4 POWER
32
17
38
A705-BU
F728-BR
A707-PU
F728-BR
SOLENOID 5 POWER
SOLENOID 5/7 RETURN
SOLENOID 7 POWER
28
21
22
A706-GY
F729-GN
A708-BR
F729-GN
SOLENOID 6 POWER
SOLENOID 6/8 RETURN
SOLENOID 8 POWER
37
27
31
A709-OR
F730-GY
A711-PU
F730-GY
SOLENOID 9 POWER
SOLENOID 9/11 RETURN
SOLENOID 11 POWER
18
33
12
A710-GY
F731-OR
A712-BR
F731-OR
SOLENOID 10 POWER
SOLENOID 10/12 RETURN
SOLENOID 12 POWER
1
2
3
4
SOLENOID 1
SOLENOID 3
J52/P52
1
2
3
4
SOLENOID 2
SOLENOID 4
J56/P56
1
2
3
4
SOLENOID 5
SOLENOID 7
J53/P53
1
2
3
4
SOLENOID 6
SOLENOID 8
J57/P57
1
2
3
4
SOLENOID 9
SOLENOID 11
J54/P54
1
2
3
4
SOLENOID 10
SOLENOID 12
J58/P58
- 97 -

98. P22 J22
SENSOR DE TEMPERATURA
REFRIGERANTE DE MOTOR
SENSOR DE PRESION
ACEITE DE MOTOR
+V ANALOG
ANALOG RETURN
SIGNAL
+V ANALOG
ANALOG RETURN
SIGNAL
P23 J23
SENSOR DE PRESION
SALIDA DEL TURBO
+V ANALOG
ANALOG RETURN
SIGNAL
P25 J25
SENSOR DE PRESION
ENTRADA DEL TURBO
+V ANALOG
ANALOG RETURN
SIGNAL
P27 J27
SENSOR DE
PRESION ATMOSFERICA
+V ANALOG
ANALOG RETURN
SIGNAL
P45 J45
SENSOR DE PRESION
DE ACEITE
+V ANALOG
ANALOG RETURN
SIGNAL
36
30
SUMINBISTRO DE ENERGIA
SENSORES ANALOGOS
P1 J1
P43 J43
+V ANALOG
ANALOG RETURN
SIGNAL
SENSOR DE TEMPERATURA
COMBUSTIBLE
P51 J51
+V ANALOG
ANALOG RETURN
SIGNAL
SENSOR DE TEMPERATURA
DE ACEITE
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
A
B
C
J21 P21
5 ± 0.2 VOLTS
ECM (3408E/3412E HEUI)
+V ANALOG SUPPLY
ANALOG RETURN

99. ECM (3408E/3412E HEUI)
+ V DIGITAL SUPPLY
- V DIGITAL RETURN
29
35
DIGITAL SENSOR
POWER SUPPLY
P1 J1
A
B
C
J35 P35
A
B
C
P84 J84
+V DIGITAL
DIGITAL RETURN
SIGNAL
FAN
SPEED SENSOR
THROTTLE
POSITION SENSOR
+V DIGITAL
DIGITAL RETURN
SIGNAL
8 ± 0.5 VOLTS
- 99 -

100. ECM (3408E/3412E HEUI)
+ SUPPLY
- RETURN
29
35
P2 J2
A
B
J46 P46
PUMP CONTROL
VALVE
SUPPLY
RETURN
PUMP CONTROL VALVE
POWER SUPPLY
0 to 24 VOLTS PWM
0 to 800 mAmps
- 100

101. ELECTRONIC SENSORS AND SYSTEMS
- 101

102. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 102

103. ANALOG SENSORS
• Fuel temperature
• Hydraulic temperature
• Lubrication oil pressure
• Turbocharger outlet pressure
• Turbocharger inlet pressure
• Atmospheric pressure
• Coolant temperature
• Hydraulic pressure
- 103

104. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY KEY
SWITCH
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 104

105. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
COOLANT TEMP. SENSOR
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 105

106. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 106

107. 100%
98%
96%
94%
92%
90%
88%
86%
84%
82%
80%
78%
76%
74%
77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53
8,210
8,920
9,630
10,340
11,050
11,760
12,470
13,890
14,600
15,310
16,020
16,730
17,440
13,180
7,500
72%
ENGINE POWER DERATING MAP
ACCORDING TO ATMOSPHERIC PRESSURE
ATMOSPHERIC PRESSURE IN kPa
PERCENTOFFULLLOADPOWER
ALTITUDEINFEET
- 107

108. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 108

109. CAT
AUTOMATIC AIR FILTER COMPENSATION
TURBOCHARGER
INLET PRESSURE
SENSOR
ATMOSPHERIC
PRESSURE
SENSOR
Filter differential pressure calculated with formula:
Atmospheric sensor pressure - Turbo sensor pressure = ∆P
Fuel limited 2% per 4 inches H20 to max 20%
- 109

110. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 110

111. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 111

112. OILPRESSUREINkPa
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800
60
80
100
120
140
160
180
200
220
240
260
280
300
ENGINE RPM
OIL PRESSURE MAP
1900
320
340
8.7
11.6
14.5
17.4
20.3
23.2
26.1
29
31.9
34.8
37.7
40.6
43.5
46.4
49.3
OILPRESSUREINPSI
kPa x 0.145 = PSI
2000
- 112

113. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET (BOOST)
PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 113

114. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
BACKUP CAM
SPEED/TIMING SENSOR
PRIMARY CAM
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP SENSOR
FUEL TEMPERATURE SENSOR
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 114

115. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
TURBO INLET PRESSURE SENSOR
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 115

116. • Throttle Position
• Pump Control Valve Signal
• Exhaust Temperature
DIGITAL SENSORS AND CIRCUITS
- 116

117. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
TURBO INLET PRESSURE SENSOR
THROTTLE
SENSOR
ACCELERATOR
PEDAL
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 117

118. 90%
ON
OFF
ON
OFF
ON
OFF
10%
50%
DUTY
CYCLE
DUTY CYCLE = PERCENT OF TIME ON VS PERCENT OF TIME OFF
1 CYCLE
= 90%
DUTY
CYCLE
= 50%
DUTY
CYCLE
= 10%
PULSE WIDTH MODULATED SIGNALS
- 118

119. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
PUMP CONTROL VALVE
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
TURBO INLET PRESSURE SENSOR
THROTTLE
SENSOR
ACCELERATOR
PEDAL
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 119

120. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
PUMP CONTROL VALVE
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
TURBO INLET PRESSURE SENSOR
THROTTLE BACK-UP, ELEVATED LOW IDLE ENABLE,
AND GROUND LEVEL SHUTDOWN (2) SWITCHES
THROTTLE
SENSOR
ACCELERATOR
PEDAL
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 120

121. ECM (3408E/3412E HEUI)
USER SHUTDOWN1
P2 J2
USER DEFINED SHUTDOWN
12
J3
USER SHUTDOWN
DEVICE
- 121

122. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
PUMP CONTROL VALVE
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
FAN
FAN SPEED SENSOR
FAN CONTROL VALVE
TURBO INLET PRESSURE SENSOR
THROTTLE BACK-UP, ELEVATED LOW IDLE ENABLE,
AND GROUND LEVEL SHUTDOWN (2) SWITCHES
THROTTLE
SENSOR
ACCELERATOR
PEDAL
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 122

123. 28
29
19
40
ECM
(3408E/E3412E)
ETHER SWITCH
308-YL
200-BK
P1 J1
ETHER INJECTION SYSTEM
ETHER SW LAMP
DIGITAL RETURN
ETHER REQUEST
ETHER CONTROL
P2 J2
F708-YL
998-BR
721-GY
710-BR
J3 P3
23
9
39
21
RELAY
1
2
+24V
+
310-PK
200-BK
P37 J37
ETHER
START VALVE TO ENGINE
FROM
CYLINDER
- 123

124. VIMS DISPLAY MODULES
COMMUNICATION
ADAPTER
7X1701
CONTROL SERVICE TOOL
SERVICE
TOOL
CONNECTOR CAT DATA LINK
VIMS
MAINMODULE
ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM)
LAPTOP
COMPUTER
CAT
ELECTRONIC TECHNICIAN
- 124

125. 988F/990 CAT DATA LINK CIRCUIT
8
9
POWERTRAIN CONTROL
MODULE
Cat Data Link +
Cat Data Link -
23
24
CMS
Cat Data Link +
Cat Data Link -
D
E
H
J
7
6
31
32
9
3
7
1
893-GN
892-BR
E794-YL
E-793-BU
J42 P3 J3 P1 J1 ECM
Cat Data Link +
Cat Data Link -
ATA Data Link +
ATA Data Link -
SERVICE TOOL
CONNECTOR
MACHINE INTERFACE
CONNECTOR
- 125

126. LOGGED EVENTS
• Engine overspeed
• Air inlet restriction
• User defined shutdown
• Hydraulic system pressure fault
• Abnormal hydraulic pressure
• Low (lube) oil pressure
• Loss of coolant flow
• High coolant temperature
• Low fuel pressure
- 126

127. ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
PUMP CONTROL VALVE
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP SENSOR
FUEL TEMPERATURE SENSOR
COOLANT FLOW SWITCH
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
INSTRUMENT
PANEL
AUTO RETARDER CONTROL
EPTC II TRANSMISSION CONTROL
SERVICE TOOL CONNECTOR
CAT DATA LINK
FAN
FAN SPEED SENSOR
FAN CONTROL VALVE
TURBO INLET PRESSURE SENSOR
THROTTLE BACK-UP, ELEVATED LOW IDLE ENABLE,
AND GROUND LEVEL SHUTDOWN (2) SWITCHES
THROTTLE
SENSOR
ACCELERATOR
PEDAL
DISCONNECT SWITCH
HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
- 127

128. MACHINE APPLICATIONS
- 128

129. 35
29
ECM
(3408E/3412E)
DECELERATION
POSITION SENSOR
P1 J1
DECELERATION POSITION SENSOR CIRCUIT
+V DIGITAL SUPPLY
DIGITAL RETURN
P2 J2
24 DECEL POSITION
A700-OR
998-BR
P38 J38
A
B
C
+V DIGITAL
DIGITAL RETURN
SIGNAL
F702-GN
- 129

130. 2
20
8
14
29
ECM
(3408E/3412E)
THROTTLE
SWITCH
P1 J1
THROTTLE SWITCH CIRCUIT
THROTTLE - LOW IDLE
THROTTLE - H.I. PARITY
THROTTLE - L.I. PARITY
THROTTLE - HIGH IDLE
DIGITAL RETURN
F715-PU
F718-BU
F716-WH
F717-YL
998-BR
- 130

131. 25
24
29
ECM
(3408E/3412E)
CRANK WITHOUT
INJECTION PLUG
P1 J1
CRANK WITHOUT INJECTION PLUG CIRCUIT
CRANK W/O INJECT (NO)720-GN
719-BR
J24 P24
998-BR
3
2
1
CRANK W/O INJECT (NC)
DIGITAL RETURN
BK
PLUG "HHH"
PLUG "JJJ"
BK
- 131

132. 35
29
13
ECM
(3408E/E3412E)
ENGINE FAN
SPEED SENSOR
P1 J1
MECHANICAL ENGINE FAN CONTROL CIRCUIT
+V DIGITAL SUPPLY
DIGITAL RETURN
P2 J2
19
7
25
VARIABLE FAN CLUTCH
PWM DR AND SOL RETURN
ENGINE FAN SPEED
A700-OR
998-BR
J84 P84
A
B
C
+V DIGITAL
DIGITAL RETURN
SIGNAL
F703-GY
P41 J41
B
C
ENGINE FAN
SOLENOID VALVE
E799-BR
F700-BU
A/C ON (INPUT FROM
COMPRESSOR SWITCH)
- 132

133. F706-PU
ECM
P1 J1
13
19
29
27
14
20
24
Throttle Lock RH Brake (NO)
Throttle Lock RH Brake (NC)
Digital Return
Throttle Lock ON Lamp
Throttle Lock Set/Declerate
Throttle Lock Resume/Accelerate
Throttle Lock ON/OFF
998-BR
RIGHT BRAKE PEDAL SWITCH
F721-GY
F722-OR
THROTTLE
LOCK LAMP
J3 P3
2
113-OR BATT+
F717-YL
F718-BU
F719-BR
998-BR
998-BR
998-BR
998-BR
998-BR
THROTTLE LOCK
SET/DECLERATION SW
THROTTLE LOCK
RESUME/ACCLERATION SW
THROTTLE LOCK SW
THROTTLE LOCK CIRCUIT
- 133

134. ECM
(3408E/E3412E)P2 J2
19
07
HYDRAULIC FAN
PWM DRIVE AND SOL RETURN
P86 J86
2
1
HYDRAULIC FAN
SOLENOID VALVE
E799-BR
F700-BU
HYDRAULIC ENGINE FAN CONTROL CIRCUIT
- 134

135. R
0
5
10
15
20
25
30
P
X100
24 V
MPH
km/h
44
AUT
SISTEMA DE MONITOREO CATERPILLAR

136. - 136

137. INLET AIR TEMP. SENSOR
SERVICE TOOL CONNECTOR
DATA LINK
EMS
PANEL
DIAGNOSTIC LAMP
ALARM /WARNING LAMP
TO AIR SHUTOFF SOLENOID
TO ETHER SOLENOID RELAY
ADEM II
ELECTRONIC
CONTROL
MODULE
(ECM) GROUND
BOLT
15 AMP
BREAKER
MAIN
POWER RELAY
KEY
SWITCH
TURBO OUTLET PRESS. SENSOR
SECONDARY
SPEED/TIMING SENSOR
PRIMARY
SPEED/TIMING SENSOR
HYDRAULIC
PRESSURE SENSOR
24 V
MACHINE
INTERFACE
CONNECTOR
ENGINE
HARNESS
PUMP CONTROL VALVE
COOLANT TEMP. SENSOR
ATMOSPHERIC PRESS. SENSOR
OIL PRESSURE SENSOR
HYDRAULIC TEMP. SENSOR
FUEL TEMPERATURE SENSOR
8 OR 12
INJECTORS
TDC SERVICE
PROBE ACCESS
PTO ENABLE/PTO UP/DOWN SWITCHES
ENGINE SHUTDOWN SWITCH
ETHER ENABLE/OVERRIDE SWITCH
EMERGENCY STOP/VERIFY SWITCH
USER DEFINED SHUTDOWN
THROTTLE POSITION SENSOR
DISCONNECT SWITCH
INDUSTRIAL
3408E/3412E HEUI SYSTEM
COMPONENT DIAGRAM
MACHINE
HARNESS
FUEL PRESS. SENSOR
COOLANT LEVEL SWITCH
MAINTENANCE INDICATOR LAMP
- 137

138. PUMP
CONTROL
VALVE
OIL
FILTER
OIL
COOLER
HEUI
HEUI
OIL
SUMP
HYDRAULIC
PRESSURE
SENSOR
HYDRAULIC OIL
TEMPERATURE
SENSOR
COLD START
OIL
RESERVOIR OIL PRESSURE
SENSOR
ECM
HYDRAULIC
SUPPLY
PUMP
GROUP
COOL DOWN
CIRCUIT
FUEL TANK
FUEL
TEMPERATURE
SENSOR
PRESSURE
REGULATING
VALVE
SECONDARY
FUEL
FILTER
FUEL
TRANSFER
PUMP
PRIMARY
FUEL FILTER
WATER
SEPARATOR
LUBE OIL
PUMP
TO LUBE
SYSTEM
FLUID MANIFOLD
FLUID MANIFOLD
3408E/3412E HEUI FUEL SYSTEM
- 138