Page 148 of 796
01-4
2. MAJOR COMPONENTS
Front view ▶
Vacuum pump
Camshaft position sensor
Oil filter assembly
Power steering pump pulley
Oil pressure switch
Water pump pulley
Idler pulley No. 22
Alternator pulley
Auto tensioner
Idler pulley No. 1
A/C compressor pulley
Rear view ▶
E-EGR valve
Fuel temperature sensor
Fuel HP pump assembly
Coolant temperature sensor
Crankshaft position sensorIMV valve
Isolation damper
Page 149 of 796
01-50000-00
Right view ▶
Front exhaust gas temperature
sensor
Oil dipstick tube &
gauge assembly
E-VGT actuator
E-VGT turbocharger
Coolant screw plug
Oil drain plug
Left view ▶
Thermostat assembly
Variable swirl valve assembly
EGR cooler E-EGR valve
E-EGR solenoid valve
Oil cooler assembly
Electronic throttle body
Page 153 of 796

01-90000-00
4. CAUTION WHEN SERVICING THE ENGINE
1) Cleaness
Engine has a lot of precisely machined (grinding, polishing, lapping) surfaces. Thus, there should be
great cautions for cleaness when servicing the engine components. Apply the engine oil on the sliding
surfaces when assemblying the components. Every component should be disassembled and
reassembled in accordance with the correct sequences. Before servicing the engine, the negative
cable should be diconnected from the battery. Otherwise, some electric or electronic components
could be damaged.
2) Servicing
Before service work, be sure to disconnect battery negative (-) terminal to prevent damages by bad
wire and short.
To prevent the foreign material from getting into engine cylinder, cover the inlet of air cleaner if the
air cleaner has been removed.
(1) Lifting up the vehicle
Always keep the safety precautions.
To prevent the vehicle from rolling down, put the chocks under the tires (when using a 4-post lift).
Make sure to support the correct lifting points (when using a 2-post lift) -
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(2) Exhaust system
Wear the safety glove when removing the exhaust pipe.
Make sure that the exhaust pipe is cooled before removing it. -
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Page 158 of 796
01-14
Name SizeNumbers of
fastenerTightening
torque (Nm)Note (total
tightening
torque)
Idler pulley/tensioner pulley 1 45±4.5Nm -
Glow plug M5 4 20±2Nm -
Vacuum pumpM8×25 3 10±1Nm -
Timing gear case coverM6×40 7 10±1Nm -
M6×45 1 10±1Nm -
M6×50 3 10±1Nm -
Cylinder head coverM6×35 21 10±1Nm -
Oil dipstick gauge coverM6×16 1 10±1Nm -
Oil filter cap 1 25±2.5Nm -
Fuel railM8×25 2 25±2.5Nm -
Injector clamp boltM6×44 2 9±1.0Nm
130˚±10˚ -
High pressure pipe
(between high pressure
pump and fuel rail
assembly)M17 1 30±3Nm -
High pressure pipe
(between fuel rail assembly
and injector)M17 4 30±3Nm -
Crankshaft position sensorM5×14 1 8±0.4Nm -
Main wiringM6×16 5 10±1Nm -
Intake ductM8×25 3 25±2.5Nm -
Power steering pumpM8×100 3 25±2.5Nm -
Cylinder head front coverM6×10 5 10±1Nm -
Ladder frameM8×16 5 30±3Nm -
Page 162 of 796
02-30000-00
Cylinder block Piston protrusion 0.475 to 0.745mm -
Piston ring TOP ring end gap 0.20 to 0.40 mm -
2nd ring end gap 0.35 to 0.50 mm -
3rd ring end gap 0.2 to 0.40 mm -
Offset 0.3mm -
Head gasket Piston protrusion 0.475 to 0.540 1.2t -
0.541 to 0.649 1.3t -
0.650 to 0.745 1.4t -
Valve Clearance between
valve and pistonIntake 1.12 mm -
Exhaust 1.09 mm -
Valve recess Intake 0.6 to 1.0 mm -
Exhaust 0.6 to 1.0 mm -
1. ENGINE ASSEMBLY
Unit Description Specification Remark
Cylinder head Height 131.9 to 132.1 mm -
Flatness below 0.1 mm -
Valve protrusion Intake valve 0.6 to 1.0 mm -
Exhaust valve 0.6 to 1.0 mm -
Flatness on manifold
sideIntake manifold 0.08 mm -
Exhaust manifold 0.08 mm -
Connecting rod End play 0.5 to 0.31 mm -
Camshaft
Axial end playIntake 0.1 to 0.35 mm -
Exhaust 0.1 to 0.35 mm -
Camshaft position
sensorDistance between Camshaft position
sensor and sprocket0.20 to 1.80 mm -
Page 171 of 796

02-12
5. GUIDELINES ON ENGINE SERVICE
To prevent personal injuries and vehicle damages that can be caused by mistakes during engine and
unit inspection/repair and to secure optimum engine performance and safety after service works, basic
cautions and service work guidelines that can be easily forgotten during engine service works are
described in.
Cautions before service works
For safe and correct works, you must observe the working procedures and instructions in this
manual. And, use the designated tools as follow:
Engine stand / Heavy duty engine jack
To prevent the engine from starting abruptly, do not allow anybody to get in the vehicle while
servicing in engine compartment.
Before work on engine and each electrical equipment, be sure to disconnect battery negative (-)
terminal.
Before service works, be sure to prepare the works by cleaning and aligning work areas.
Do not allow the foreign material get into the fuel injection system.
When removing the engine, use only the safety hook on engine and engine hanger. Do not
support the bottom of oil pan with a jack.
Engine and accessories
Completely drain the engine oil, coolant and fuel from engine before removal.
Before disassembling/assembling the engine components, carefully read the working procedures
in this manual.
Make sure to keep the specified tightening torques during installation.
Clean and properly lubricate the parts before reassembly.
Carefully check that there are not any interference while servicing. ▶
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Page 184 of 796
02-250000-00
Vacuum pump driveHP pump drive gear
Cylinder head gasket
Camshaft position sensor
Components ▶
Cylinder head
Cylinder head contains cam position sensor, vacuum pump, intake manifold, exhaust manifold and valve
assembly. Vacuum pump and the high pressure (HP) pump are driven by Camshaft and valves are install
in vertical direction. This enables the compact layout in cylinder head assembly.
6. CYLINDER HEAD
Finger follower & HLACamshaft sprocketIntake/exhaust Camshafts
Page 187 of 796
02-28
3) Valve Assembly (Installed in Cylinder Head)
(1) Features
Automatic valve clearance adjuster by hydraulic pressure (Maintenance Free) - Hydraulic lash
Optimized adjustment of valve clearance reduces the valve noise.
Roller type finger follower reduces the friction loss.
Vertical installation.
Simple and compact design reduces the moving operation (improving valve following and fuel
consumption at high speed) 1.
2.
3.
4.
5.
(2) Arrangement
Hydraulic lash adjuster
Upper valve spring retainer
Lower valve spring retainer
Valve spring
Exhaust valveIntake valve
Finger follower