lock SSANGYONG NEW ACTYON SPORTS 2012 User Guide

02-28
Thickness marking
Ex: 1.3t
4) Cylinder Head Gasket
(1) Features
Sealing the cylinder gas pressure - Peak pressure: 190 bar
Minimizing the distortion of engine structure (cylinder head, block): profile stopper, backland
stopper
Material: MLS (Multi Layer Steel), Gasket (3 layers)
Thickness of gasket: 3 types (1.2 /1.3 /1.4 mm) 1.
2.
3.
4.
(2) Thickness of cylinder head gasket
There are three types of gasket to managing the compression ratio.
Piston protrusion ▶
Piston protrusion Thickness
0.475 to 0.540 mm 1.2t
0.541 to 0.649 mm 1.3t
0.650 to 0.745 mm 1.4t

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Features
Major function: Protecting the chain drive system, minor function: Shielding the chain noise.
Install crankshaft front seal and screw plug on the timing gear case cover. ▶
-
-
Do not touch the inner lip of crankshaft front seal.
Be careful not to damage the screw thread when removing the lock pin to release the chain
tensioner.
Be careful not to damage the O-ring when installing the screw plug. -
-
-
A671 997 01 46
Crankshaft front seal
Location of chain tensioner
screw plug

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4) Features
Reduced vibration noise from the powertrain by blocking the torsional vibrations
Enhanced vehicle silence and riding comforts: reduced engine torque fluctuation
Reduced shifting shocks
Smooth acceleration and deceleration -
-
-
-
5) Advantages
Improved torque response by using 3-stage type spring: Strengthens the torque response in
all ranges (low, medium, and high speed) by applying respective spring constant at each
range.
Stable revolution of the primary and secondary wheel by using planetary gear: Works as
auxiliary damper against spring changes
Less heat generation due to no direct friction against spring surface: Plastic material is
covered on the spring outer surface
Increased durability by using plastic bushing (extends the lifetime of grease) -
-
-
-
6) Drive Plate
Drive plate receives the power from the start motor when starting the engine. With this, the drive
plate initially drives the power train system. And, it is connected to the torque converter to transfer
the engine torque to the power train system.
Trigger ring
Drive plate
Components ▶

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10. PISTON/CRANKSHAFT/CYLINDER BLOCK
The crankshaft and the cylinder block convert the compression pressure to the rotating energy.
Components ▶
Cylinder block
Piston
Connecting rod
Crankshaft

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(3) Functions
Piston transfers the combustion energy from engine to connecting rod. Especially in the direct
injection engine such as D20DTF, it provides the combustion space and largely effects to the
engine performance and exhaust gas.
Piston ring
#1 ring (Top ring) : Prevents the high pressurized combustion gas from leaking into crank
chamber, and prevents the engine oil getting into combustion chamber.
#2 ring: Scrapes the engine oil on the cylinder bore, and prevents the leaked combustion gas
from #1 ring from leaking into the crank chamber.
Oil ring: Scrapes the engine oil on the cylinder bore.
Piston pin
Connects the piston the connecting rod, and transfers the linear movement of piston to
connecting rod to convert it to rotating energy
Snap pin
Locks the piston pin. ▶
-
-
-
▶
-
▶
-
(4) Assembling the piston
Install the piston rings with the "Y" mark on
the ring facing upwards.
Position the end gap of #1 ring at 180˚
away from the end gap of #1 ring.
Position the end gap of oil ring at 180˚
away from the end gap of coil spring, and
position the end gap of oil ring at 90˚ away
from the end gap of #2 ring. 1.
2.
3.

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EnginePiston Cylinder bore
Part NO Marking NO.-
D20DTF 671 030 06 17 - -
671 037 07 01 A A
671 037 08 01 X X
671 037 09 01 B B
671 037 10 01 +5 -
671 037 11 01 +10 -
Selecting piston oversize
Top of piston Top of cylinder block

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3) Crankshaft
(1) Overview
Crankshaft is installed on the cylinder block.
(2) Arrangement
Crankshaft main bearing upperCrankshaft main bearing upper
Upper thrust bearing
Crankshaft main bearing lowerCrankshaft main bearing lower
Lower thrust bearing
Crank pin journalMain journal

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Selection of bearing according to pin punch
& color
Mark Color Thickness of main
bearing
* Blue 66.500~66.506
** Yellow 66.506~66.513
*** Red 66.513~66.519
(3) Selection of crankshaft main bearing
Mark Color Thickness of main
bearing (mm)
V Violet +0.030
+0.025
W White +0.025
+0.020
R Red +0.020
+0.015
Y Yellow +0.015
+0.010
B Blue +0.010
+0.005
2.25
2.25
2.25
2.25
2.25
Bottom of cylinder block
Selection of upper main bearing
Mating surface of crankshaft sprocket
Selection of lower main bearing

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4) Cylinder Block
(1) Overview
The major dimensions in D20DTR are similar to
D20DT engine. It has two mounting
bosses for knock sensor and meets the
requirements for EURO5 regulation.
(2) Layout
Right sideRight side
Expansion plug
Screw plug

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Left sideExpansion plug
(3) Features
For simple manufacturing, the crankcase
blow-by gas passage and the oil return hole
are made by casting on the cylinder block.