SsangYong Rexton. Service manual - part 314

M162 ENGINE MECHANICAL 1B1-59

SSANGYONG Y200

Sectional View

1 Oil Pan
2 Cover
3 Crankshaft Front Seal
4 Flywheel Mounting Bolt
5 Crankshaft
6 Dowel Pin
7 Washer (thickness = 3.5 mm)

YAD1B830

8 Washer
9 Bolt

10 Front Drive Plate
11 Rear Drive Plate
12 Rivet
13 Segment
14 Ring Gear

SSANGYONG Y200

1B1-60 M162 ENGINE MECHANICAL

TIMING DEVICE AND VALVE

CAMSHAFT ADJUSTER

Preceding Work :

Removal of cylinder head cover

Removal of cylinder head front cover

1 Bolt (M6 x 16, 3 pieces)

....................................... 9-11 N•m (80-97 lb-in)

2 Camshaft Actuator (2 Pin Connector)
3 Bolt ........................................... 35 N•m (26 lb-ft)
4 Armature
5 Roll Pin
6 Nut (M20 x 1.5) .............. 60-70 N•m (44-52 lb-ft)
7 Front Cover
8 Seal
9 Camshaft Position Sensor

10 Bolt (M6 x 16, 2 pieces)

......................................... 9-11 N•m (80-97 lb-in)

11 -

12 Seal Cover
13 Camshaft Sprocket and Position Indicator (b)
14 Adjuster Piston
15 Flange Bolt (M7 x 13, 3 pieces)

........................ 1st step 18-22 N•m (13-16 lb-ft)

2nd step 90° ± 5°

16 Flange Shaft
17 Compression Spring
18 Control Piston
19 Circlip
20 Oil Gallery
21 Pin
22 Intake Camshaft

YAD1B0B0

M162 ENGINE MECHANICAL 1B1-61

SSANGYONG Y200

Functions

When the engine is running, the camshaft rotates the
intake camshaft hydrauically/mechanically relative to
the camshaft sprocket by 34° crankangle to the
‘advanced’ position and back to the ‘retarded’ position.

The camshaft adjuster is actuated electromechanically
by the ECU. The positioning time of approx. 1 second
is dependent on the engine oil pressure at the
camshaft adjuster and on the oil viscosity and oil
temperature, respectively. The position indicator (b)
on the camshaft sprocket (13) provides the camshaft
rotational speed to the position sensor (9) as an input
parameter for the engine ignition control unit.

YAD1B0C0

“Retarded” Position

12 Seal Cover
13 Camshaft Sprocket
14 Adjust Piston (Stops Towards The Front)
16 Flange Shaft
17 Compression Spring
18 Control Piston (Stops Towards The Rear)
19 Circlip
22 Intake Camshaft
23 Oil Outlet Drilling

A Working Chamber (Oil Pressure)

Y49 Electromagnetic Actuator (Not Functioning)

1. Ignition suitch OFF (‘retarded’)

The compression spring (17) pushes the control
piston (18) against the circlip (19). The engine oil
pressure in the camshaft is eliminated.

2. From 0 to 1000 - 2000 r pm (‘retarded’)

The torque of the internally helically toothed
camshaft sprocket (13) acting in the direction of
rotation of the engine pushes the externally helically
toothed positioning piston(14) against the cover(12)
as a result of the screw action. Consequently, the
likewise internally helically toothed positioning
piston (14) holds the externally helically toothed
flanged shaft (16) together with the bolted-on
camshaft (22) in the ‘retarded position’. The
compressing spring (17) pushes the control
piston(18) against the circlip (19). The engine oil
flows through 2 oblique drillings in the camshaft
flange and in the flanged shaft (16) in to the working
chamber (A) and holds the positioning piston (14)
additionally in the ‘retarded’ position with the
available engine oil pressure.

Leak oil flows off over control and positioning piston
surface, through the control piston drilling and 2
drillings (23) in the camshaft flange.

SSANGYONG Y200

1B1-62 M162 ENGINE MECHANICAL

3. From 1000 - 2000 to 4000 rpm (‘advanced’)

The control piston (18) is pulled forward as far as
the stop in the flanged shaft (16) by the actuator
(Y49) against the force of the compression spring
(17).

The control piston (18) closes the oil feed to the
working chamber ‘A’ and at the same time allows
oil to flow to the working chamber ‘B’ through 2
drillings each in the flanged shaft (16) and adjusting
piston (14). The engine oil pressure moves the
adjusting piston (14) as for as the stop on the
flanged shaft (16). As a result of the axial movement
of the flanged shaft (16) is turned into the ‘advanced’
position. The turning action is achieved as a result
of the effect of the helical teeth on the camshaft
sprocket (13), positioning piston (14) and flanged
shaft (16). The engine oil in working chamber ‘A’
flows off, assisted by the pushing action of the
adjusting piston (14), over the flanged shaft (16)
and through 2 drillings (23) in the camshaft flange.

YAD1B0D0

“Advanced” Position

A Working Chamber (Oil Pressure)

Y49 Electromagnetic Actuator (Not Functioning)

4. From 4000 r pm (‘retarded’)

The electromagnetic actuator (Y49) is not actuated
and allows the control piston to move. The
compression spring (17) pushes the control piston
(18) against the circlip (19). The oil feed to the
working chamber ‘B’ is closed off and oil is able to
flow to working chamber ‘A’ along 2 drillings in the
flanged shaft (16). As a result of the engine oil
pressure, the control piston (18) is moved as far as
the cover (12).

This axial movement of the adjusting piston (14)
rotates the camshaft (22) bolted to the flanged shaft
(16) in to the ‘retarded’ position.

The rotational movement is a result of the screw
effect of the helical teeth on the camshaft sprocket
(13), positioning piston (14) and flanged shaft (16).
The engine oil in the working chamber (B) flows off,
assisted by the pushing action of the adjusting
piston (14), through 2 drillings each in the adjusting
piston (14), flanged shaft (16) and control piston
(18) through the control piston (18) and 2 drillings
in the camshaft flange (23).

Leak oil flows off over the control and adjusting
piston surfaces through the control piston drilling
and 2 drillings in the camshaft flange (23).

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