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M161 ENGINE MECHANICAL 1B2-35
CYLINDER HEAD COVER
1 Ignition Coil Cover
2 Spark Plug Connector
3 Bolt (M6 X 45 : 4 pieces, M6 X 60 :
6 pieces)............................................. 10 ± 1 Nm4 Cylinder Head Cover
5 Gasket ................................................... Replace
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1B2-36 M161 ENGINE MECHANICAL
Removal & Installation Procedure
1. Remove the intake air duct.
Installation Notice
2. Remove the ignition coil cover.
Installation Notice
3. Remove the spark plug connector and ignition cable.Notice
Release 3 screws from the ignition cover and remove the
cover for M161 Engine coil.
Tightening Torque 9 - 11 Nm
Tightening Torque 9 - 10 Nm
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1B2-44 M161 ENGINE MECHANICAL
TIMING GEAR CASE COVER
Preceding Work : Removal of viscous clutch
Removal of cylinder head front cover
Removal of tensioning device
Removal of water pump
Removal of oil filter element
Removal of oil pan
Removal of alternator bracker
1 Bolt (M8 X 60, 3 pieces).................22.5-27.5 Nm
2 Bolt (M8 X 75, 1 piece)...................22.5-27.5 Nm
3 Seal4 Timing gear case cover
5 O-ring
6 Sleeve
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M161 ENGINE MECHANICAL 1B2-45
Tools Required
001 589 72 21 00 Torque Wrench
116 589 2 0 33 00 Sliding Hammer
116 589 01 34 00 Threaded Bolt
Removal & Installation Procedure
1. Remove the power steering belt pulley and A/C compressor
bracket.
2. Remove the oil line from power steering pump.
3. Rotate the crankshaft so that the piston of number, cylinder
is at ATDC20°
Sliding Hammer 116 589 20 33 00
Threaded Pin 116 589 02 34 00
4. Put the alignment marks (arrows) on the timing chain and
camshaft sprocket.
5. Remove the chain tensioner.
Installation Notice
Tightening Torque 78 - 88 Nm
6. Remove the intake and exhaust camshaft sprocket
(remove the camshaft adjuster assembly in E23 engine).
Installation Notice
Tightening Torque1st step 18 - 22 Nm
2nd step 85° - 95°
Notice
The flange bolt is designed to be used only once, so always
replace with new one.
7. Remove the guide rail pin using the sliding hammer (02)
and the threaded pin (03).
Notice
Apply the sealant on guide rail pin when installation.
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1B2-46 M161 ENGINE MECHANICAL
8. Unscrew the bolts (A).
Installation Notice
Tightening Torque 22.5 - 27.5 Nm
9. Remove the belt pulley and vibration damper.
Installation Notice (Center Bolt)
Tightening Torque1st step 180 - 220 Nm
2nd step 80° - 100°
10. Unscrew the bolts (1, 2) on timing gear case cover and
remove the timing gear case cover.
Installation Notice
Tightening Torque 22.5 - 27.5 Nm
Notice
Be careful not to damage the cylinder head gasket.
11. Remove the radial shaft seal
Notice
Installation note replace the seal with new one.
12. Clean the timing gear case cover and crankcase sealing
surface.
13. Replace the O-ring with new one and apply the sealant on
the sealing surface.
Notice
Be careful not to stain the oil chamber of chain tensioner
with the sealant.
14. Installation should follow the removal precedure in the
reverse order.
15. Warm up the engine and check for oil leaks.
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1B2-48 M161 ENGINE MECHANICAL
Tools Required
601 589 03 43 00 Sleeve
Removal & Installation Procedure
1. Unscrew the bolts (1) and (5) and remove the closing cover
by pulling the rear cover lug (arrows).
Notice
Be careful not to damage the oil pan gasket.
2. Clean the sealing surface of the crankcase and the rear
sealing cover.
3. Check the radial shaft seal and replace it if necessary.
4. Apply the Loctite 573 to the rear cover sealing surface.
5. Apply the engine oil to the dust lip of the radial shaft seal.
Notice
Do not use the grease.
6. Using the special tool, press the radial shaft seal and the
rear cover.
7. Tighten the rear cover bolt (1) and then tighten the oil pan
bolt (5) as specified and remove the special tool.
Installation Notice
Seal Assembler 601 589 03 43 00
Tightening Torque(Bolt 1,5) 9 - 11 Nm
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1B2-50 M161 ENGINE MECHANICAL
Components
Service Data Standard
Permissble Deviation of The Vibration DamperRadial Runout
Axial Runout0.6 mm
0.6 mm
Tools Required
103 589 00 33 00 Puller
001 589 65 09 00 Socket Wrench Insert
001 589 74 21 00 Puller
000 589 88 33 00 Torque Wrench
602 589 00 40 00 Engine Lock
Removal & Installation Procedure
1. Adjust the piston of number 1 cylinder to the TDC.
1 Center Bolt (M18 x 50)
2 Center Bolt Washer
3 Vibration Damper and Pulley Assembly
4 Key
5 Crankshaft Front Seal
6 Timing Gear Case Cover
7 Crankshaft Sprocket (Camshaft Driven)
8 Crankshaft Sprocket (Oil pump Driven)
9 Crankshaft
10 Oil Pan
11 Oil Pan Gasket
12 Oil Pan Mounting Bolt (M6 x 22)
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1B2-52 M161 ENGINE MECHANICAL
CRANKSHAFT FRONT RADIAL SEAL
Preceding Work : Removal of belt pulley and vibration damper
1 Center Bolt (M18 x 50)
............................... 1st step 200-220 Nm
2nd step 90° +10°
2 Center Bolt Washer
3 Sleeve (Special Tool)
4 Crankshaft Front Seal
5 Key
Tools Required
601 589 03 14 00 Sleeve
Replacement Procedure
1. Remove the radial seal with a screw driver.
Notice
Use a clean cloth not to damage the radial seal mounting
hole and the crankshaft.
5. Remove the sleeve and install the belt pulley and the
vibration damper.
6. Check for leaks while operating the engine.2. Coat the radial sealing lip with engine oil.
3. Using the sleeve, assemble the radial seal .
4. Align the sleeve groove and the woodruff key and tighten
the center bolt until the center bolt and the damper disk
stop in the movement.
Installation Notice
Tightening Torque1st step 200 - 220Nm
2nd step 90° + 10°