2013 SSANGYONG TURISMO Service Manual

02-42
(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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Selecting piston oversize
Top of piston Top of cylinder block
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 -

02-44
2) Connecting Rod
(1) Overview
Connecting rod converts the reciprocating movement of piston to the rotating movement of crankshaft.
The big end is connected to connecting rod bearing and the crank pin journal, and the small end is
connected to the piston pin.
(2) Components
Connecting rod cap bolt
Connecting rod upper bearing
Connecting rod
Piston pin bush
Connecting lower bearing
Connecting rod cap

02-450000-00
NoConnecting
rod/ Bore
diameter in
big endUpper bearing Lower bearing
Journal
diameter of
crank pinOil
clearance of
bearing
GradeBearing
thicknessGradeBearing
thickness
1
54.600 R 1.804
B 1.812
50.935 0.017
1.808 1.815 0.063
2
Y 1.808
Y 1.809 0.016
54.614 1.812 1.812
50.960 0.062
3
B 1.812
R 1.806 0.015
1.816 1.809 0.061
Min. 0.015
Max. 0.063
(3) Selection of crankshaft pin journal bearing
The connecting rod bearing contains 3 sets of 3 grades in upper and lower sections.
Three sets in the table below have nearly same oil clearance (0.015~0.063 mm) of bearing.
Identification: Coloe mark on bearing side surface -
-
-
Oil clearance of connecting rod bearing

02-46
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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Bottom of cylinder block
Selection of upper main bearing
Mating surface of crankshaft sprocket
Selection of lower main bearing
(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
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

02-48
4) Cylinder Block
(1) Overview
The major dimensions in D20DTR are similar to
D20DTR engine. It has two mounting
bosses for knock sensor and meets the
requirements for EURO5 regulation.
(2) Layout
Right sideCylindrical pin
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.