caterpillar-heui-system.pdf

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David Parari

manual

Automotive

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 1/24
1
Malaga
3408/12 & 3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 2/24
2
Malaga
Components
High pressure
hydraulic pump
E C M
Throttle
control
Speed/timing
sensor
Injector
Pressure
sensor
Temperature
sensor
3408/12 H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 3/24
3
Malaga
Oil flow
IAP
sensor
3408/12 H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 4/24
4
Malaga
HEUI System
3408/12 H E U I
TO LUBE
SYSTEM
FUEL
TRANSFER
PUMP
PUMP
CONTROL
VALVE
OI
L
FILTER
OI
L
COOLER
HEUI
HEUI
OIL
SUMP
HYDRAULIC
PRESSURE
SENSOR
HYDRAULIC
TEMPERATURE
SENSOR
OIL PRESSURE
SENSOR
ECM
COOL DOWN
CIRCUIT
FUEL TA
NK
FUEL
TEMPERAT
URE
SENSOR
PRESSURE
REGULATING
VALVE
SECONDARY
FUEL
FILTER
PRIMARY
FUEL FILT
ER
WATER
SEPARATOR
LUBE OIL
PUMP
COLD STA
RT
OI
L
RESERVOIR
HYDRAULIC
SUPPLY
PUMP
GROUP
FLUID MANIFOLD
HYDRAULIC PASSAGE
FLUID MANIFOLD
HYDRAULIC PASSAGE

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 5/24
5
Malaga
Injector components
3408/12 H E U I
Valve body
Barrel
Nozzle

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 6/24
6
Malaga
Poppet action
3408/12 H E U I
Poppet closed From ECM
Drain cycle
From ECM
Poppet open

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 7/24
7
Malaga
Injector check valves
Reverse flow check valve
Venting check valve
Inlet check valve
3408/12 H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 8/24
8
Malaga
Metering ( Prime)
3408/12 H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 9/24
9
Malaga
Timing wheel
3408/12 H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 10/24

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 11/24
11
Malaga
3 valve cylinder head
3126B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 12/24
12
Malaga
Oil passage
3126B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 13/24
13
Malaga
Injector sleeve
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 14/24
14
Malaga
Component diagram
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 15/24
15
Malaga
Low fuel pressure
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 16/24
16
Malaga
Injection Actuation Pressure Control Valve
(IAPCV)
The IAPCV controls the
HEUIoil pressure
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 17/24
17
Malaga
Injector
Component
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 18/24
18
Malaga
Solenoid
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 19/24
19
Malaga
Poppet Valve
closed
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 20/24
20
Malaga
Poppet valve
open
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 21/24
21
Malaga
Intensifier
piston
and
plunger
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 22/24
22
Malaga
Nozzle
assembly
3126 B H E U I

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 23/24
23
Malaga
H E U I
Vertical bolts
Injector clamp
Horizontal bolts
Injector installation
Allen screws

7/28/2019 caterpillar HEUI system
http://slidepdf.com/reader/full/caterpillar-heui-system 24/24
24
Malaga
H E U I

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caterpillar-heui-system.pdf

1. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 1/24 1 Malaga 3408/12 & 3126 B H E U I

2. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 2/24 2 Malaga Components High pressure hydraulic pump E C M Throttle control Speed/timing sensor Injector Pressure sensor Temperature sensor 3408/12 H E U I

3. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 3/24 3 Malaga Oil flow IAP sensor 3408/12 H E U I

4. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 4/24 4 Malaga HEUI System 3408/12 H E U I TO LUBE SYSTEM FUEL TRANSFER PUMP PUMP CONTROL VALVE OI L FILTER OI L COOLER HEUI HEUI OIL SUMP HYDRAULIC PRESSURE SENSOR HYDRAULIC TEMPERATURE SENSOR OIL PRESSURE SENSOR ECM COOL DOWN CIRCUIT FUEL TA NK FUEL TEMPERAT URE SENSOR PRESSURE REGULATING VALVE SECONDARY FUEL FILTER PRIMARY FUEL FILT ER WATER SEPARATOR LUBE OIL PUMP COLD STA RT OI L RESERVOIR HYDRAULIC SUPPLY PUMP GROUP FLUID MANIFOLD HYDRAULIC PASSAGE FLUID MANIFOLD HYDRAULIC PASSAGE

5. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 5/24 5 Malaga Injector components 3408/12 H E U I Valve body Barrel Nozzle

6. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 6/24 6 Malaga Poppet action 3408/12 H E U I Poppet closed From ECM Drain cycle From ECM Poppet open

7. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 7/24 7 Malaga Injector check valves Reverse flow check valve Venting check valve Inlet check valve 3408/12 H E U I

8. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 8/24 8 Malaga Metering ( Prime) 3408/12 H E U I

9. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 9/24 9 Malaga Timing wheel 3408/12 H E U I

10. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 10/24

11. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 11/24 11 Malaga 3 valve cylinder head 3126B H E U I

12. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 12/24 12 Malaga Oil passage 3126B H E U I

13. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 13/24 13 Malaga Injector sleeve 3126 B H E U I

14. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 14/24 14 Malaga Component diagram 3126 B H E U I

15. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 15/24 15 Malaga Low fuel pressure 3126 B H E U I

16. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 16/24 16 Malaga Injection Actuation Pressure Control Valve (IAPCV) The IAPCV controls the HEUIoil pressure 3126 B H E U I

17. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 17/24 17 Malaga Injector Component 3126 B H E U I

18. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 18/24 18 Malaga Solenoid 3126 B H E U I

19. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 19/24 19 Malaga Poppet Valve closed 3126 B H E U I

20. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 20/24 20 Malaga Poppet valve open 3126 B H E U I

21. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 21/24 21 Malaga Intensifier piston and plunger 3126 B H E U I

22. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 22/24 22 Malaga Nozzle assembly 3126 B H E U I

23. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 23/24 23 Malaga H E U I Vertical bolts Injector clamp Horizontal bolts Injector installation Allen screws

24. 7/28/2019 caterpillar HEUI system http://slidepdf.com/reader/full/caterpillar-heui-system 24/24 24 Malaga H E U I

caterpillar-heui-system.pdf

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caterpillar-heui-system.pdf