2003 SSANGYONG MUSSO low oil pressure

M162 ENGINE MECHANICAL 1B1-17
Operation at Idling and Mid-Load
It show that the throttle valve (19) is closed or very partially opened and the vacuum pressure in intake manifold is high. The blowby gas in the crankcase in partial load flows into the intake manifold through the vent line (20) after passingthe air conditioner bracket (6) and the filter (4). The air reentered into the intake manifold will be dilluted on the flow
through the restriction hole (11) in the vent line (10). The circulated engine oil is separated at the air conditioner bracket (6) and then returns into the oil pan through thedrain pipe (7). The vacuum pressure generated at the crankcase sucks fresh air from intake air line(13) through the air admissionand vent connection (17,18). The fresh air prevents engine oil from being contami-nated and the air admission and vent connection (17,18) is designed to control the rapid pressure changes in intakeair line (13).
Operation at Full-Load
The throttle valve (19) is fully opened. All the blowby gases flow into the intake air duct (13) after passing through the oil separator (15,16) of the cylinder head cover (14) when fully loaded. This dilluted air will be supplied to the combustion chamber through the intakemanifold (12).

M162 ENGINE MECHANICAL 1B1-101
OIL PRESSURE RELIEF VALVE Preceding Work : Removal of oil pan
1 Screw Plug................................................ 50 Nm
2 Compression Spring
Removal & Installation Procedure
1. Remove the screw plug (1). Installation Notice
2. Remove the spring (2), guide pin (3) and the piston (4).
3. Installation should follow the removal procedure in the reverse order. Notice Don ’t use the seal for the screw plug. 3 Guide Pin
4 Piston
Tightening Torque 50 Nm

M161 ENGINE MECHANICAL 1B2-3
N

 m
20 / + 90 °
40
72 - 88
20 / + 90 °
25 - 35
22.5 - 27.5 22.5 - 27.5 22.5 - 27.5 22.5 - 27.5 30
26 - 34
30
8 - 10 2525
22.5 - 27.5 29 - 35
22.5 - 27.5 9 - 11
50
9 - 11
15Application
Exhaust Camshaft Sproket Bolt
Chain Tensioner Screw Plug
Chain Tensioner AssemblyExhaust Camshaft Sprocket to CamshaftOil Pump Sprocket Bolt
Tensioning Device Bolt
Water Pump PulleyUpper Intake Manifold BoltLower Intake Mainfold BoltFlange Bolt to Exhaust Mainfold Exhaust Mainfold Nut to Stud Bolt Rivet Nut in Exhuast Mainfold HolePre-Silencer BoltOil Drain PlugOil Filter Cover Oil Filter Bolt Oil Pump Drive Sprocket BoltOil Pump Mounting BoltOil Strainer Bracket Bolt
Oil Pressure Relief Valve Screw Plug Oil Dipstick Guide tube Bolt Oil Gallery Screw Plug
FASTENER TIGHTENING SPECIFICATIONS (Co n t ’d)

1B2-18 M161 ENGINE MECHANICAL Operation at Idling and Mid-Load
The throttle valve(6) is closed or very partially opened, and the vacuum pressure in intake manifold is high. The blow-by gas and the fresh air that is additionally supplied through the vent connection(D) in the crankcase in partialload gets supplied to the combustion chamber from the crank
chamber(12) through the oil separation chamber(11), air- conditioner bracket(10), vent line(9), and restrictor(7)mounted to the cylinder head. The circulated engine oil returns to the oil pan through the oil return pipe(13) at the bottom of oil separation
chamber(11). The fresh air gets supplied to the crank chamber(12) through the HFM sensor(1), intake air duct(4), vent line(5), oil separation chamber(3), chain housing(17), and the timing gear case cover(15). The additional supply of the fresh air is needed to prevent from forming the residues of the engine oil.

M161 ENGINE MECHANICAL 1B2-103
OIL PRESSURE RELIEF VALVE Preceding Work : Removal of oil pan
1 Screw Plug................................................ 50 Nm
2 Compression Spring
Removal & Installation Procedure
1. Remove the screw plug (1). Installation Notice
2. Remove the spring (2), guide pin (3) and the piston (4).
3. Installation should follow the removal procedure in the reverse order. Notice Don ’t use the seal for the screw plug. 3 Guide Pin
4 Piston
Tightening Torque 50 Nm

1B3-170 OM600 ENGINE MECHANICAL
Removal & Installation Procedure
1. Remove the oil filter cover and then drain the oil.
2. Remove the oil pressure switch line.
3. Remove the oil filter housing.
4. Clean the sealing surface.
5. Installation should follow the removal procedure in thereverse order.

SECTION 1D1
M162 ENGINE COOLING
Specifications . . . . . . . . . . . . . . . . . . . . . . . 1D1-1General Specifications . . . . . . . . . . . . . . . . . 1D1-1
Fastener Tightening Specifications . . . . . . . . 1D1-2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . 1D1-3 Special Tools Table . . . . . . . . . . . . . . . . . . . . 1D1-3
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . 1D1-4 System Leakage Test . . . . . . . . . . . . . . . . . . 1D1-4
Maintenance and Repair . . . . . . . . . . . . . . 1D1-5
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . 1D1-5Coolant Drain and Fill Up . . . . . . . . . . . . . . .
1D1-5
Coolant Connection Fitting . . . . . . . . . . . . . . 1D1-7
Water Pump . . . . . . . . . . . . . . . . . . . . . . . . . 1D1-8
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . 1D1-10
Oil Cooler Pipe Line . . . . . . . . . . . . . . . . . . 1D1-11
Cooling Fan and Viscous Clutch . . . . . . . . . 1D1-12
Cooling Fan Shroud . . . . . . . . . . . . . . . . . . 1D1-14
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . 1D1-15
SPECIFICATIONS
GENERAL SPECIFICATIONS
CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when a tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless otherwisenoted.
TABLE OF CONTENTS
Description
Water Cooling Forced Circulation Double Cross Flow
70,000 kcal/h
580 x 482 x 45 mm
460, Six Blades
ALUTEC - P78
50 : 50
11.3 L 3.4 L
1.4 bar
Application
Cooling Type Radiator Dimension(Width ×Height ×Thickeness)
Cooling Fan Anti-Freeze Agent
Mixing Ratio of Anti-Freeze Agen with Water (Anti-Freeze Agent : Water)Coolant CapacityReservoir Capacity
Cap Operating Pressure (Reservoir Tank Pressure Cap)
Circulation Type Radiation Capability

M162 ENGINE CONTROLS 1F1-47
3. Disconnect the vacuum hose.
4. Disconnect the circlip and remove the fuel pressureregulator.
5. Apply the oil to O-ring lightly and then replace it.
6. Installation should follow the removal procedure in the reverse order.
7. Check for fuel pressure and internal leaks by operating the engine.
2. Discharge the pressure in fuel supply system by pressing
the service valve.
Removal & Installation Procedure
1. Remove the fuel pressure test connector.