2012 SSANGYONG NEW ACTYON SPORTS Service Manual

02-8
(2) Cylinder pressure leakage test
If the measured value of the compression pressure test is not within the specifications, perform
the cylinder pressure leakage test.Specified value ▶
Perform this test in the sequence of firing order.
Do not test the cylinder pressure leakage with wet type test procedure. (do not inject the
engine oil into the combustion chamber) -
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Test condition: normal engine operating
temperature (80˚C)Specified value
Whole engine below 25%
at valve and cylinder head gasket below 10%
at piston ring below 20%
Crank the engine for approx. 10 seconds
by using the start motor. 2.
Record the test result and measure the
compression pressure of other cylinders
with same manner. 3.
If the measured value is out of specified
value, perform the cylinder pressure
leakage test. 4.

02-90000-00
Position the piston at TDC and measure the
piston protrusion from crank case mating
surface.
(3) Piston protrusion check
Specified value 0.541 to 0.649 mm
Measure it at both ends of crankshaft. -

02-10
2) Cylinder Head
(1) Cylinder head mating surface check
Specified value ▶
Total height "A"142.9 to 143.1 mm
Minimum height after machining142.4 mm
FlatnessLongitudinal direction0.08 mm
Transverse direction0.0 mm
Parallel deviation of cylinder headbelow 0.1 mm
Peak-to valley of surface0.004 mm
valve recess "a"Intake valve0.1 to 0.7 mm
Exhaust valve0.1 to 0.7 mm
Measure the cylinder head height "A". 1.
If the height is less than the limit, the
cylinder head must be replaced. -
Insert the valves into the valve guides and
measure the recesses. 2.
If the measured value is out of the
specified range, machine the valve seat
as much as necessary until the specified
value is achieved. -
Valve recess “a0.1 to 0.7 mm
(2) Cylinder head pressure Leak test
<007000940094008c0099009a008c0047009b008f008c0047008a00a0009300900095008b008c00990047008f008c0088008b0047009e0090009b008f0047009b008f008c004700970099008c009a009a009c0099008c0047009700930088009b008c004700
900095009b00960047009e0088009900940047009e0088009b>er (approx. 60°C) and pressurize
with compressed air to 2 bar.

02-110000-00
4. 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 ▶
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▶
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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02-12
Electrical equipment ▶
Electric devices should be handled more carefully.
Currently, the engine has a lot of electric devices. there could be poor engine performance,
incomplete combustion and other abnormal symptoms due to short circuit or poor contact.
Before work on engine and each electrical equipment, be sure to disconnect battery negative
(-) terminal.
When replacing the electric device, use only genuine part and check the conditions of
connections and grounds. Loosened connection or ground make cause a fire and personal
injury. -
-Fuel and lubrication system ▶
Do not allow the fluid and engine oil to make contact with the body paintwork and hoses.
If work on the fluid system such as fuel and oil, working area should be well ventilated and
smoking should be prohibited.
Gasket or seal on the fuel/lubrication system should be replaced with new ones and bolts and
nuts should be tightened as specified.
After removal/installation works, be sure to check whether there is leak on the connecting
section. -
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If fine dust or foreign material enters into DI engine's fuel system, there can be serious damages
in HP pump and injectors. Thus, be sure to plug the inlets of removed fuel line components with
cap and protect removed parts not to be contaminated with dirt. (Refer to cleanness in this
manual while working on DI engine fuel system)

02-130000-00
D20DTR Engine
1. BELT LAYOUT
It is single drive type and uses FEAD (Front End Accessories Drive) design to make a compact
layout.
Components ▶
HPS (Hydraulic Power Steering)
1 Crankshaft pulley (DDU)
2 Auto tensioner
3 Tensioner pulley
4 Vacuum pump
5 A/C compressor pulley
6 Alternator pulley
7 Water pump pulley
8 Idle pulley #1
9 Idle pulley #2
10 Power steering pump pulley

02-14
The strut type tensioner automatically adjusts the belt tension to provide the reliability and
durability for the system. And, the belt tension is decreased to minimize the friction loss and
improve the belt operating noise.
1) Crankshaft Pulley (Isolation Damper)
(1) Overview
(2) Sectional drawing
Axial & radial bearing
Sleeve
Hub
Isolation pulley rubber Pulley
Damper rubber
Inertia ring

02-150000-00
(3) Features
Rubber damper: Decrease crankshaft torsion
Improve belt NHV: Reduce unbalance speed to crankshaft due to irregular combustion
Minimize noise: Anti-vibration from crankshaft and belt
Post bonded type rubber damper: Improve durability of rubber damper 1.
2.
3.
4.