SSANGYONG Rexton Y200 Manual page 102

"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)
SSANGYONG Y200
M162 ENGINE MECHANICAL 1B1-61
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.
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
YAD1B0C0
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.