2003 SSANGYONG MUSSO oil

1B2-100 M161 ENGINE MECHANICAL9. Fill up engine oil through the engine oil filler opening.
10. Check for oil leaks at normal engine temperature after starting the engine.
11. Stop the engine and wait 5 minutes. Check the oil level and fill up as specified if necessary.
4. Remove the drain plug (1) and drain the engine oil.
Notice Leave the oil filler cap (3) open to ease the engine oil discharge.
5. Tighten the engine oil drain plug after cleaning it. Installation Notice
Tools Required
103 589 02 09 00 Oil Filter Socket Wrench Replacement Procedure
1. Install the socket wrench ”7” (special tool : 103 589 02 09
00) on the oil filter cover (2). NoticeMake the screw cover removable by tightening the bolt at the side of the socket wrench (special tool).
2. Install the wrench to the upper bolt in the socket wrench and remove the oil cover by turning it.
3. Remove the oil filter element.
Notice Work with a cloth under the vehicle when removing the oil filter element to not drain the oil. Replace the seal washer with new one.
6. Replace the O-ring(5) in the oil filter cover with new one.
Notice Apply the engine oil to the O-ring.
7. Insert new oil filter element into the oil filter housing.
Tightening Torque 25 Nm
8. Temporarily tighten the oil filter cover (2). Install the socket wrench “7” (special tool : 103 589 02 09 00), and then
completely tighten it. Installation Notice
2 Oil Filter Cover
5 O-ring
6 Oil Filter Element
7 Special Tool (Socket Wrench)
Tightening Torque 25 Nm

M161 ENGINE MECHANICAL 1B2-101
OIL PUMP Preceding Work : Removal of oil pan
1 Bolt (M8 X 35, 3 piece)...................22.5-27.5 Nm
2 Oil Pump
3 Oil Strainer Assembly
4 Bolt (M6 X 12, 2 pieces) ......................... 9-11 Nm
(In E23 Engine, These Bolts areCombined with Baffle Plate)
5 Bolt (M8 X 20, 1 pieces) ....................... 29-35 Nm 6 Washer
7 Sprocket (Oil Pump Drive)
8 Chain (Oil Pump Drive)
9 Plate-Baffle
10 Bolt (M6 X 12, 6 piece) ........................... 9-11 Nm
(E23 Engine Only : Baffle Plate Mounting Bolt)

1B2-102 M161 ENGINE MECHANICAL
Removal & Installation Procedure
1. Unscrew the bolt (6) from the oil pump drive sprocket andseparate the oil pump drive chain. Installation Notice
Tightening Torque Bolt (4) 9 - 11 Nm
Bolt (5) 9 - 11 Nm
Tightening Torque 29 - 35 Nm
2. Unscrew the bolts (4,5) and remove the oil strainer assembly (3). Installation Notice Insert the steel gasket into the oil pump and bolt (4) mounting surface.
3. Unscrew the six bolts (11) and remove the haffle plate. Installation Notice
Tightening Torque 9 - 11 Nm
4. Unscrew the three bolt (1) and remove the oil pump. Installation Notice
Tightening Torque 22.5 - 27.5 Nm

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

1B2-104 M161 ENGINE MECHANICAL
OIL NON-RETURN VALVE Preceding Work : Removal of timing gear case cover
1 Oil Non-Return Valve
Functions The non-return valve prevents the oil in the chain tensioner from drying up. In other words, it stops oil-returning in order to
prevent the oil in the chain tensioner from getting dry. As aresult, the chain tensioner can be activated with oil in itself.
Replacement Procedure
1. Remove the non-return valve using a pliers.
2. Insert new non-return valve with hand.

M161 ENGINE MECHANICAL 1B2-105
OIL DIPSTICK GUIDE TUBE
1 Oil Dipstick Level Gauge
2 Oil Dipstick Guide Tube
3 O-ring
Removal & Installation Procedure
1. Pull out the oil dipstick level gauge (1).
2. Unscrew the bolt (4) and remove the oil dipstick guide tube (2).Installation Notice 4 Bolt (M6 X 16, 1 piece)
........................... 9-11 Nm
5 Clamp
Tightening Torque 9 - 11 Nm
It is very hard to remove the oil dipstick guide tube without
special tool. If it is not necessary, do not remove the guide tube.
3. Installation should follow the removal procedure in the reverse order.
4. Check for leaks by starting the engine.

M161 ENGINE MECHANICAL 1B2-109
Service Data Standard Measurement of Cylinder Bore
1. Clean the cylinder wall.
2. Using a internal diameter gauge, measure the bore size inaxial and transverse direction at three points (1,2,3).
1,2,3 Measuring Points
A . Axial Direction B. Transverse Directiona. Location of the No.1 Piston Ring at TDC
b. Location of the Piston BDC
c . Location of the Oil Ring at BDC
Chamfer Angle
Wear Limit in Longitudinal and Transverse Direction Permissible Deviation of Cylinder Out-of-round Permissible Deviation of Rectangular Cylinder Height (Except Chamfered Area) Basic Peak-to-valley Height After Final Honing and Brushing Chamfer AngleHoning Angle When new
Wear limit
0.1 mm
0.007 mm 0.05 mm0.05 mm
0.003 - 0.006 mm
75°
50 ° ± 10 °
1)
The group code letters are carved on the surface of the piston crown and in the mating surface of the crankcase. Type
Standard Size E20 :
89.9
E23 :
90.9
1st Repair Size
(Standard Size + 0.25)
2nd Repair Size
(Standard Size + 0.5) Group Code Letter
1)
A XB A XBAX B Cylinder Bore Size (mm)
89.900 - 90.906
89.906 - 89.912
89.912 - 89.918
90.150 - 90.156
89.156 -
90.162
90.162 - 90.168
90.400 - 90.406
90.406 - 90.412
90.412 - 90.418

SECTION 1B3
OM600 ENGINE MECHANICAL
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.
Specifications . . . . . . . . . . . . . . . . . . . . . . . 1B3-2Fastener Tightening Specifications . . . . . . . . 1B3-2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . 1B3-4 Special Tools Table . . . . . . . . . . . . . . . . . . . . 1B3-4
Maintenance and Repair . . . . . . . . . . . . . 1B3-12
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . 1B3-12
Engine Assembly . . . . . . . . . . . . . . . . . . . . 1B3-12
Poly V-Belt . . . . . . . . . . . . . . . . . . . . . . . . . 1B3-21
Tensioning Device . . . . . . . . . . . . . . . . . . . . 1B3-23
Poly V-Belt Alignment & Inspection . . . . . . . 1B3-26
Prechamber . . . . . . . . . . . . . . . . . . . . . . . . 1B3-29
Milling of Prechamber Sealing Surface . . . . 1B3-32
TDC (TDC Sensor Bracket) Setting . . . . . . 1B3-35
Cylinder Head . . . . . . . . . . . . . . . . . . . . . . . 1B3-37
Timing Case Cover . . . . . . . . . . . . . . . . . . . 1B3-63
Crankshaft End Cover . . . . . . . . . . . . . . . . 1B3-71
Vibration Damper and Hub . . . . . . . . . . . . . 1B3-74
Crankshaft Front Radial Seal . . . . . . . . . . . 1B3-80
Crankshaft Ball Bearing . . . . . . . . . . . . . . . 1B3-82
Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . 1B3-83
Flywheel . . . . . . . . . . . . . . . . . . . . . . . . . . . 1B3-93
Machining of Flywheel . . . . . . . . . . . . . . . . 1B3-97
Flywheel Ring Gear . . . . . . . . . . . . . . . . . . 1B3-98
Hydraulic Valve Clearance Compensation
Element Check . . . . . . . . . . . . . . . . . . . . 1B3-101
Valve Tappets . . . . . . . . . . . . . . . . . . . . . . 1B3-103
Valve Spring Check . . . . . . . . . . . . . . . . . 1B3-105
Valve Springs (Cylinder Head Removed) . 1B3-106
TABLE OF CONTENTS
Valve Springs (Cylinder Head Installed) . . 1B3-109
Valve Stem Seals . . . . . . . . . . . . . . . . . . . 1B3-112
Check and Replacement of Valve Guides . . . . . . . . . . . . . . . . . . . . . 1B3-116
Valve Seat Rings . . . . . . . . . . . . . . . . . . . 1B3-122
Check and Machining of Valves . . . . . . . . 1B3-127
Machining of Valve Seat . . . . . . . . . . . . . . 1B3-132
Camshaft Timing Test . . . . . . . . . . . . . . . . 1B3-137
Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . 1B3-139
Chain Tensioner . . . . . . . . . . . . . . . . . . . . 1B3-145
Timing Chain . . . . . . . . . . . . . . . . . . . . . . . 1B3-147
Tensioning Rail . . . . . . . . . . . . . . . . . . . . . 1B3-151
Cylinder Head Guide Rail . . . . . . . . . . . . . 1B3-152
Timing Case Cover Guide Rail . . . . . . . . . 1B3-156
Crankshaft Sprocket . . . . . . . . . . . . . . . . . 1B3-158
Piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1B3-163
Oil Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 1B3-169
Oil Pan . . . . . . . . . . . . . . . . . . . . . . . . . . . 1B3-171
Oil Spray Nozzle . . . . . . . . . . . . . . . . . . . . 1B3-174
Oil Pump . . . . . . . . . . . . . . . . . . . . . . . . . . 1B3-175
Unit Repair . . . . . . . . . . . . . . . . . . . . . . . 1B3-177
Cylinder Head Pressure Leakage Test . . . 1B3-177
Facing Cylinder Head Mating Surface . . . . 1B3-178
Replacement of Crankcase Core Plug . . . 1B3-180
Facing Crankcase Contacting Surface . . . 1B3-182
Oil Gallery Steel Ball . . . . . . . . . . . . . . . . . 1B3-183
Cylinder Bore Measurement . . . . . . . . . . . 1B3-187