engine SSANGYONG MUSSO 2003 Service Manual

1B2-86 M161 ENGINE MECHANICAL
CYLINDER HEAD GUIDE RAIL Preceding Work : Removal of cylinder head cover
1 Bolt (M6 X 45, 2 pieces).................. 9-11 Nm
2 Guide Rail
Removal & Installation Procedure
1. Position the number 1 cylinder to ATDC20 ° guide rail.
2. Install the pin (special tool : 111 589 03 15 00) into the no.1 and no.6 bearing cap hole.
3. Remove the chain tensioner. Installation Notice
Tightening Torque Screw Plug40 Nm
Tensioner Assembly
72 - 88 Nm
4. Unscrew the bolt (1) and remove the guide rail. Installation Notice
Tightening Torque 9 - 11 Nm
5. Installation should follow the removal procedure in the reverse order.

M161 ENGINE MECHANICAL 1B2-87
CRANKCASE GUIDE RAIL Preceding Work : Removal of timing gear case cover
Removal & Installation Procedure
1. Remove the timing gear case cover (3).Notice Be careful not to damage the gasket when removing/
installing the timing gear case cover.
2. Remove the guide rail (2) from the guide rail pin(1).
Notice
Replace the plastic guide (2) if damaged.
Connect the plastic guide (2) and the guide rail (1) by
aligning them accurately when installing.
3. Installation should follow the removal procedure in the reverse order.
1 Guide Rail Pin
2 Guide Rail
3 Timing Gear Case Cover

1B2-88 M161 ENGINE MECHANICAL
CRANKSHAFT SPROCKET Preceding Work : Removal of oil panRemoval of tensioning rail Removal of crank case guide rail Removal of cylinder head
6 Bolt (M8 x 20, 1 piece) / Washer ..........29-35 Nm
7 Oil Pump Sprocket
8 Oil Pump
9 Oil Pump Roller Chain
10 Timing Chain
1 Oil Pump Chain Tensioner
2 Oil Pump Chain Spring
3 Oil Pump Chain Bushing (Pin)
4 Crankshaft Sprocket
5 Key

M161 ENGINE MECHANICAL 1B2-89
Tools Required
615 589 01 33 00 Caulking Bolt Removal & Installation Procedure
1. Put the assembly mark at the crankshaft sprocket (4) andthe timing chain (10) with the paint (arrow). Installation Notice Align the assembly marks on cranshaft sprocket and timing chain. Also, align the assembly marks on camshaft sprocketand timing chain when installing.
2. Unscrew the bolt (6) and remove the oil pump sprocket (7) from the oil pump. Installation Notice
Caulking (04) 615 589 01 33 00
3. Remove the oil pump roller chain (9).
4. Remove the oil pump chain tensioner (1), oil pump chain
bushing (3), and the oil pump chain spring (2).
5. Remove the crankshaft sprocket (4) using the puller (04, special tool). Notice
Make sure not to lose the crankshaft pulley key (5) when
removing.
Install the crankshaft sprocket (4) after warming it up.
6. Installation should follow the removal procedure in the reverse order.
Tightening Torque 29 - 35 Nm

1B2-90 M161 ENGINE MECHANICAL PISTON Preceding Work : Removal of engineRemoval of cylinder head Removal of oil pan Removal of oil pumpRemoval of baffle plate
1 Connecting Rod Bearing Cap
2 Connecting Rod
3 Connecting Rod Bolt(M9 x 52, 8 pieces) ......................1st step 40 Nm
2nd step 90 ° +5 ° 4 Piston
5 Snap Ring
6 Piston Pin

M161 ENGINE MECHANICAL 1B2-91
Tools Required
001 589 72 21 00 Torqued Wrench
000 589 04 14 00 Clamping Strap Removal Procedure
1. Unscrew the connecting rod bolt (3) and remove the cap.
2. Remove the connecting rod and the piston upward.Notice Make sure that the bearing cap and shell are not changed
each other.
3. Remove the snap ring (5) and pull out the piston pin (6).
Notice Remove the snap ring using a clean cloth as shown in the right picture so that the piston, piston ring, and the snapring don ’t get damaged.
Installation Procedure

1B2-92 M161 ENGINE MECHANICAL
1. Check the piston ring gap and apply the engine oil to thepiston pin and the connecting rod bushing.
2. Connect the piston and the connecting rod by pressing in the piston pin (6) and install the snap ring to the groove.
3. Clean the cylinder bore, connecting rod bearing journal, connecting rod bearing shell and the piston and coat them with engine oil.
4. Install the piston ring using the tensioning strap(000 589 04 14 00).
5. Install the piston so that the arrow on the piston head faces to the forward of the vehicle.
6. After aligning the connecting rod and the bearing cap mark (// or a number), tighten the bolts.
Installation Notice
Tightening Torque 1st step 35 - 45 Nm
2nd step 90
°+5 °
Apply the engine oil to the bearing cap upper and lower bearing shells.
7. Check if the crankshaft rotates without any trouble by rotating it.

M161 ENGINE MECHANICAL 1B2-93
CONNECTING ROD Preceding Work : Removal of piston
1 Connecting Rod Bushing
2 Oil Gallery
3 Balance Weight
4 Connecting Rod Bolt(M9 x 52, 8 pieces) ............1st step 40 Nm
2nd step 90 °
5 Fit Sleeve
6 Upper Connecting Rod Bearing
7 Lower Connecting Rod Bearing
8 BearingShell Lug
9 Marking [Indication(//) or Numbers]
Service Data Standard
Distance (L) from The Connecting Rod Bearing to Bushing Bore Center Width of The Connecting Rod (B) at Bearing Bore Width of The Connecting Rod (b) at Bushing BoreBasic Bore at The Bearing Shell (D1)Basic Bore at The Bushing (d1) Bushing Inner Diameter (d) Clearance Between The Piston Pin and The BushingPeak-to-valley Height of Connecting Rod Bushing on InsidePermissible Wwist of Connecting Rod Bearing Bore toConnecting Rod Bushing Bore Permissible Deviation of Axial Paralleism of Connecting Rod Bearing Bore to Connecting Rod Bushing Bore
Permissible Deviation of Axial Paralleism of Connecting Rod Bearing Bore fromConcentricity
Permissible Difference of Each Connecting Rod in Weight E20 : 154 mm
E23 : 149 ± 0.05 mm 21.940 - 22.000 mm 21.940 - 22.000 mm 51.600 - 51.614 mm24.500 - 24.571 mm22.007 - 22.013 mm 0.007 - 0.018 mm
0.005 mm
0.1/100 mm
0.045/100 mm
0.01 mm0.4 g

1B2-94 M161 ENGINE MECHANICAL Inspection
1. Measure the basic bore of the connecting rod bearing.Notice If the basic bore exceeds the value of 51.614mm, replace the bearing or check the connecting rod.
2. Check connecting rod bolts.
3. Check the assembly mark(indication//or number:arrow) of the connecting rods and the bearing cap when installing. Notice
Make sure it doesn ’t exceed over 4g with other
connecting rods when replacing the connecting rods.
Check if the connecting rod and the bearing cap are accurately seated on the groove when replacing the bearing.
Notice If the length exceeds max. length, replace it.
Length When New (L)
Max. Length (L)
Tightening Torque 51.7 - 52 mm
52.9 mm
1st step 40 + 5 Nm 2nd step 90 °+10 °

M161 ENGINE MECHANICAL 1B2-95
PISTON RING Preceding Work : Removal of piston
1 Piston Compression Ring (Top Ring)
2 Piston Compression Ring (2nd Ring)
3 Piston Oil Ring 4-
5 Spacer
6 Side Rail
Notice If out of specification, replace the piston ring.
Tools Required
000 589 51 37 00 Clamping Strap
Replacement Procedure
1. Measure the piston ring ’s gap.
Gap Between The Piston and The Piston Ring
Groove 1 0.20 - 0.40 mm Groove 2 0.20 - 0.40 mm Groove 3 0.20 - 0.45 mm
Groove 1 0.028 - 0.060 mm Groove 2 0.010 - 0.045 mmGroove 3 0.010 - 0.045 mmEnd Gap of The Piston Ring