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0000-00
Right side view
Left side view
Rear oxygen sensor connector
Front oxygen sensor connector
Exhaust manifoldHeat protector
Front oxygen sensor
WCC complete
Crankshaft pulley
Oil pan drain plug
Rear oxygen sensor
Coolant outlet port
Injector assembly
Fuel rail
T-MAP sensor Purge control solenoid valve
Electronic throttle body
VIS solenoid valve
Oil dipstick gauge
Oil filter assembly
Thermostat assembly
Oil pressure sensor
Page 437 of 1336
Name Size Quantity Tightening torque
Oil pan bolt M6 X 1.0 X 20 16
Oil pan bolt M6 X 1.0 X 35 4
Oil pan bolt M6 X 1.0 X 85 2
Oil dipstick gauge bolt M6 X 1.0 X 16 1
Camshaft cap M6 X 1.0 X 30 20
Main gallery screw bolt - 1
Main bearing cap bolt - 10
Cylinder head bolt M12X1.75X102 10
Cylinder head TGCC side bolt M8 X 1.25 X 30 4
Cylinder head front cover bolt M6 X 1.0 X 25 8
Cylinder head cover bolt M6 X 1.0 X 30 20
Crankshaft center bolt M18 X 1.5 X 50 1
Flywheel bolt M10 X 1.0 X 22 8
Connecting rod bolt M9 X 1.0 X 52 8 40 + 5 Nm
Cam Cap bolt (#1) M6 X 1.0 X 35 4
Cam Cap bolt (#2~5) M6 X 1.0 X 30 16
Solenoid valve bolt M5 X 0.8 X 22 1
Intake manifold bolt M8 X 1.25 X 32 5
2. TIGHTENING TORQUE
Name Size Quantity Tightening torque
Heater core screw bolt - 1
Ladder frame bolt M8 X 1.25 X 20 7
TGCC M6 X 1.0 X 25 10
Oil drain plug - 1
Oil pan bolt M6 X 1.0 X 20 16
Oil pan bolt M6 X 1.0 X 35 4
Oil pan bolt M6 X 1.0 X 85 2
Oil dipstick gauge bolt M6 X 1.0 X 16 1
Page 439 of 1336

3. GUIDELINES ON ENGINE SERVICE
G20DF engine is for FF (Front Engine Front Drive) type vehicle. Therefore, there are some deferent
maintenance and repair works compared to the engine for FR (Front Engine Rear Drive) type vehicle.
For safe and correct works, you must observe the working procedures and instructions in this manual.
And, use the designated tools as follow:
: Power train mounting stand / Engine hanger / Engine stand / Heavy duty engine jack.
Cautions before service works
G20DF engine is FF (Front Engine Front Drive) type engine, and the engine and transmission are
integrated in a same module. Remember that there are many differences compared to
conventional engine in FR (Front Engine Rear Drive) type SUV vehicle.
To remove the engine, use the dedicated equipments such as engine jack, transmission jack,
engine stand and engine crane (1 ton).
To prevent the engine from abruptly starting during service in engine compartment, never allow
anybody to stay in the vehicle.
Make sure to disconnect the negative (-) cable from the battery to prevent any damage to electric
systems.
Make sure to clean the working area and to prepare the necessary tools before service works.
Always place the ignition switch to OFF position if not required. Otherwise, there could be
unexpected damage to electric devices or personal injuries due to short-circuit..
To prevent the foreign material from entering into the fuel injection system, completely seal the
inlets of HP pump, fuel hoses and high pressure pipes.
Do not remove the engine while supporting the oil pan with a jack. -
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Lifting up the vehicle
Before lifting up the vehicle with a lift, correctly support the lifting points.
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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Page 463 of 1336
Components
Piston assembly contains piston, #1 ring, #2 ring, oil ring, piston pin and snap ring. The expansion energy
from engine is transferred to the crankshaft through connecting rod to convert the linear movement to
rotating energy.Overview
Layout and Components
Top
Bottom
Oil ring
Piston ring
No.1 ring
Piston pin
No.2 ringSnap ring
Piston
Page 470 of 1336
1128-01
Front view
Rear view
Spring pin (cylinder head mounting)
Expansion plug (exhaust: 6)
Screw plug (water jacket plug) (30Nm)
Screw plug (oil gallery plug)
Spring pin (T.G.C.C) A.
B.
C.
D.
E.
Overview
The cylinder block is made of special cast iron, and contains the major components such as cylinder
head, crankshaft and piston assembly. There are oil and coolant galleries to lubricate and cool the
engine.
Components
Plug screw (water jacket plug) (70Nm)
Expansion plug (intake: 4)
Spring pin (A/C mounting)
Oil gallery (oil filter assembly)
Ctankshaft position sensor mounting
Plug screw (oil gallery plug)
Spring pin (RR seal mounting) A.
B.
C.
D.
E.
F.
G.
Page 509 of 1336
1535-01
3. LAYOUT
Oil Pump Assy
Seal Ring
Oil Pan
Bolt
Drain Plug
Bolt
Oil Pump Chain
Oil Pump Chain Tensioner Assy 1.
6.
8.
10.
11.
21.
22.
24.Bolt
Oil Dipstick Tube Assy
Oil Dipstick Gauge Assy
O-Ring
Bolt
O-Ring
Sealant
Dust Cover 25.
31.
32.
33.
34.
37.
44.
45.
Page 511 of 1336
1535-01
Oil pressure switch
1. OVERVIEW
The lubrication system supplies oil to each lubrication section to prevent friction and wear and to remove
heat from the friction part. As the engine runs, frictional heat is generated on each lubrication section. If
this condition persists, the bearing can be burned and stuck.
In other words, it creates an oil film on each sliding surface to convert solid friction to liquid friction in
order to minimize wear and prevent temperature increasing on the friction part.
2. COMPONENTS
Engine oil dipstickOil jet
Engine oil panOil pumpOil filter module
Page 986 of 1336

A/T assembly
Automatic transmission is available as 4WD- and 2WD-type,
and provides 6 speeds for forward travel and 1 reverse
travel. It is also equipped with the torque converter with inner
lock-up clutch and electronically controlled solenoid which
controls all hydraulic functions.
3. CHASSIS COMPONENT LAYOUT
PTU (Power Transfer Unit)
The PTU is a device that transfers the power
generated from the engine to the rear axle through
propeller shaft and E-coupling by changing the power
4WD vehicle.Rear axle assembly
The rear axle installed in this car is a removable
axle, called IRDA (Independent Rear Differential
Axle). The rear differential carrier is installed
directly on the sub frame, and there is an
independent suspension that allows each wheel
on the same axle to move vertically independentl
y
of each other with the universal joint and the slip
joint.
E-coupling control unit (E-Coupling ECU)
The E-coupling unit is a control unit which determines
the magnetic force by considering CAN signals (wheel
speed, engine torque, pedal opening, ABS/ESP CAN
signals, etc.) from other ECUs.
Inhibitor switch
Torque converter Oil pan
E-coupling sideRear axle side
Propeller shaft
1) 4WD Vehicle With Automatic Transmission
GSLDSLInhibitor switch
Torque converter Oil pan