Page 2 of 751
01-4
Detailed Dimensions ▶
Unit:mm
Headlamp
Front fog lamp
Side repeater
Tun signal lamp (front)
Position lamp 1.
2.
3.
4.
5.Stop/Tail lamp
Back-up lamp
License plate lamp
Turn signal lamp (rear)
Reflector 6.
7.
8.
9.
10. 
         
        
        
     
        
        Page 30 of 751
01-130000-00
NameSizeNumbers of 
fastener Tightening 
torque (Nm) Note (total 
tightening  torque)
Idler pulley/tensioner  pulley 1 
45±4.5Nm  - 
Glow plug M5 4 20±2Nm  - 
Vacuum pump M6×25 3 10±1Nm  - 
Timing gear case cover M6×40 7 10±1Nm  - 
M6×45  1 10±1Nm  - 
M6×50  3 10±1Nm  - 
Cylinder head cover M6×35 21 10±1Nm  - 
Oil dipstick gauge cover M6×16 1 10±1Nm  - 
Oil filter cap 1 25±2.5Nm  - 
Fuel rail M8×25 2 25±2.5Nm  - 
Injector clamp bolt M6×44 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  sensor M5×14 
1 8±0.4Nm  - 
Main wiring M6×16 5 10±1Nm   - 
Intake duct M8×25 425±2.5Nm  - 
Power steering pump M8×100 3 25±2.5Nm  - 
Cylinder head front  cover M6×10  
5  10±1Nm  - 
Ladder frame M8×355 30±3Nm 
- 
EGR pipe bolt
(to air duct) M6×16 
2 10±1Nm  -
EGR pipe bolt 
(to EGR cooler) M8×25
225±2.5Nm  - 
         
        
        
     
        
        Page 37 of 751
02-6
ComponentSizeBolt 
Quantity Specified torque 
(Nm) Remark
(Total torque)
Glow plug M5 4 20±2Nm  - 
Vacuum pump M6×253 10±1Nm  - 
Timing gear case cover M12×55 3 85±8.5Nm  - 
M6×25  7 10±1Nm  - 
M6×45  1 10±1Nm  - 
M6×50  3 10±1Nm  - 
Cylinder head cover M6×35 21 10±1Nm  - 
Oil gauge tube M6×16 1 10±1Nm  - 
Oil filter cap 1 25±2.5Nm  - 
Fuel rail M8×35SOC  2 25±2.5Nm  - 
Injector clamp bolt M6×60 2 10±1Nm,
120˚+10˚  - 
High pressure pipe 
(between HP pump and  fuel rail) M17 1 
30±3Nm - 
High pressure pipe 
(between fuel rail and  injector) M17 4 
30±3Nm - 
Crank position sensor M5×14 1 5±1.0Nm  - 
Main wiring M6×16 5 10±1Nm  - 
Intake duct M8x25 4 25±2.5Nm  - 
Power steering pump M8×100 3 25±2.5Nm  - 
Cylinder head front cover M6×10 5 10±1Nm  - 
Ladder frame M8×16 5 30±3Nm  - 
Oil pump M8×35 3 25±2.5Nm  - 
EGR Cooler 
MTG Bolt M8×16
225±2.5Nm -
M8×70 225±2.5Nm -
Idle pulley/Tensioner  pulley 1
45±4.5Nm  - 
         
        
        
     
        
        Page 60 of 751

02-290000-00
(2) Layout
Chain upper bush
Type: single bush
Chains:112 EA
Tensioner rail
Installed between exhaust 
Camshaft sprocket and 
crankshaft sprocket
Hydraulic tensioner
Contains tensioner housing 
plug, spring and check valve, 
and operated by hydraulic 
pressure
Crankshaft sprocket
Teeth: 21 EA
Oil pump sprocket
Teeth: 33 EA
Chain lower bush
Chain type: single bush
Chains: 60 EA
Mechanical type tensioner
Operated by internal spring
Clamping rail
Installed between exhaust 
Camshaft sprocket and 
crankshaft sprocket
Exhaust camshaft  sprocket
Teeth: 42 EA
1) Chain Drive
(1) Overview
The drive chain is single chain drive system with  simple design and variable performance, and it utilizes 
the hydraulic tensioner to reduce the wave impact generated by the chain\
. This chain is light weight and 
has high durability through single bush chain. Shoulder bolts are used f\
or better NVH.
7. CHAIN AND GEAR DRIVE SYSTEM
D20DTR engine uses single stage chain drive system. Timing chain drives the exhaust side and gear 
drive the intake side. Timing chain is single bush ty pe. Upper chain drives HP pump connected to intake 
Camshaft by driving exhaust camshaft sprocket, and lowe r chain drives oil pump to lubricate the engine.
25±2.5Nm 
         
        
        
     
        
        Page 62 of 751
02-310000-00
Clamping guide rail
Installed between exhaust 
Camshaft sprocket and 
crankshaft sprocketTensioner guide rail
Installed between exhaust 
Camshaft sprocket and 
crankshaft sprocket
(3) Mechanical Tensioner Assembly
Operating principle
- Use only spring tension
Tensioner type
- Compensation and impact absorbing
Static and dynamic force
- Spring 
(4) Guide rail
The guide rail is used for optimizing the movement of chain drive system. And it also prevents the chain 
from contacting each other when the chain is loose, and reduces the chain wear.
The guide rail is made of plastic, nylon, Teflon, etc. The guide rail is specially required when the distance 
between two spokes is too great. It pushes the chain with constant force so that the chain can work 
smoothly. The guide rail is fitted by pins. 
         
        
        
     
        
        Page 95 of 751

03-18
3. CAUTIONS FOR DI ENGINE
1) Cautions for DI Engine
This chapter describes the cautions for DI engine equipped vehicle. This includes the water separation 
from engine, warning lights, symptoms when engine malfunctioning, causes and actions.
DI Engine 1.
Comparatively conventional diesel engines, DI engine controls the fuel injection and timing electrically, 
delivers high power and reduces less emission..
System Safety Mode 2.
When a severe failure has been occurred in a vehicle, the system safety mode is activated to protect the 
system. It reduces the driving force, restricts the engine speed (rpm) and stops engine operation. Refer 
to "Diagnosis" section in this manual.
Engine CHECK Warning Lamp 3.
The Engine CHECK warning lamp on the instrument cluster comes on when the fuel or 
major electronic systems of the engine are not working properly. As a result, the 
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Water Separator Warning Lamp 4.
When the water level inside water separator in fuel filter exceeds a certain level (approx. 
45 cc), this warning light comes on and buzzer sounds.
Also, the driving force of the vehicle decreases (torque reduction). If these conditions 
occur, immediately drain the water from fuel filter. 
         
        
        
     
        
        Page 97 of 751

03-20
(2) Di engine and its expected problems and remedies can be caused by 
     water in fuel
System supplement against paraffin separation ▶
In case of Diesel fuel, paraffin, one of the elements, can be separated from fuel during winter and then 
can stick on the fuel filter blocking fuel flow and causing difficult starting finally. Oil companies supply 
summer fuel and winter fuel by differentiating mixing ratio of kerosene and other elements by region and 
season. However, above phenomenon can be happened if stations have poor facilities or sell improper 
fuel for the season. In case of DI engine, purity of fuel is very important factor to keep internal 
preciseness of HP pump and injector. 
Accordingly, more dense mesh than conventional fuel filter is used. To prevent fuel filter internal clogging 
due to paraffin separation, SYMC is using fuel line that high pressure and temperature fuel injected by 
injector returns through fuel filter to have an effect of built-in heater (see fuel system).
System supplement and remedy against water in fuel ▶
As mentioned above, some gas stations supply fuel with excessive than specified water. In the 
conventional IDI engine, excessive water in the fuel only causes dropping engine power or engine 
hunting. However, fuel system in the DI engine consists of precise components so water in the fuel can 
cause malfunctions of HP pump due to poor lubrication of pump caused by poor coating film during high 
speed pumping and bacterization (under long period parking). To prevent problems can be caused by 
excessive water in fuel, water separator is installed inside of fuel filter. When fuel is passing filter, water 
that has relatively bigger specific gravity is accumulated on the bottom of the filter.
Water drain from water separator ▶
If water in the separator on the fuel filter exceeds a certain level, it will be supplied to HP pump with fuel, 
so the engine ECU turns on warning lamp on the meter cluster and buzzer if water level is higher than a 
certain level.
Due to engine layout, a customer cannot easily drain water from fuel filter directly, so if a customer 
checks in to change engine oil, be sure to perform water drain from fuel filter. 
Water 
separator
To separate the water from the fuel filter, 
remove the fuel filter assembly first. 
         
        
        
     
        
        Page 106 of 751
04-51719-00
3) Troubleshooting Sequence
The basic checks for intake system are as follows:
Basic Checks for Intake System ▶
Make sure to replace or clean the air cleaner 
element periodically. Otherwise, engine will be 
derated or work abnormally because of low 
intake air volume. 
Unlike the fuel system, which is a closed 
circuit, the intake system is an open circuit 
system. Therefore any malfunction may occur 
due to dust and dirt. 
Most of the connections consist of hoses so 
the system cannot withstand high temperature 
and pressure. Also it can be deformed or 
loosened easily because it is a clamp 
mounting system. Thus, when checking the 
engine, basic inspections, such as tightened 
status check and visual inspection for hose, 
etc., should be carried out in advance.
Other Checks for Intake System ▶
If the intake system is free of any faults, check 
for EGR and PCV oil separator.