Page 345 of 2053
1B2 -- 52 M161 ENGINE MECHANICAL
D AEW OO M Y_2000
Removal & Installation Procedure
1. Unscrew the flywheel mounting bolt.
Installation Notice
Ti
ghteningTo rque
1st step: 45 + 5 NSm
(33+3.7lb-ft)
TighteningTorque
2nd step: 90°+10°
DReplace the bolt when the stretch side diameter (d)
of the flywheel mounting bolt is less than 8.0mm.
DFor the flywheel mounting bolt tightening, keep the
socket wrench and Tommy -- bar to be 90°and tight-
en as specified.
2. Remove the flywheel for manual transmission ve-
hicles, or the driven plate (3), and plate (2) for Auto.
transmission vehicle.
3. Installation should follow the removal procedure in
the reverse order.
Page 442 of 2053
1F2 -- 22 M161 ENGINE CONTROLS
D AEW OO M Y_2000
CRANKSHAFT POSITION (CKP) SENSOR
YAA1F940
This Electronic Ignition (EI) system uses inductive or pickup type magnetic Crankshaft Position (CKP) sensor. The
CKP sensor is located in the opposite side of the crankshaft pulley and triggers the pick-up wheel teeth which is
equipped 60 -- 2 teeth with a gap of 2 teeth at 360 degree spacing. This sensor protrudes through its mount to within 1.1
±0.14 mm.
The output of the sensor is a sinusoidal signal. Each tooth of the pick-up 60 -- 2 wheel generates a positive half wave.
The Engine Control Module (ECM) uses this sensor signal to generate timed ignition and injection pulses that it sends
to the ignition coils and to the fuel injectors.
Page 551 of 2053

D AEW OO M Y_2000
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
otherwise noted.
TABLE OF CONTENTS
Specifications 1B3 -- 2............................
Fastener 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..
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.............
Page 552 of 2053
1B3 -- 2 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
Engine Assembly
ApplicationNSmLb-- FtLb-- In
Skid Plate Bolt28 -- 4721 -- 35--
Drain Plug Bolt3022--
Coolong Fan Shroud Bolt3--7--27 -- 62
Control Linkage Nut8--186--13--
Clutch Linkage Cylinder Nut20 -- 3415 -- 25--
Exhaust Manifold Bolt3022--
Propeller Shaft Bolt & Nut (Axle)70 -- 8052 -- 59--
Propeller Shaft Bolt & Nut (T/C)81 -- 8960 -- 66--
Engine Mounting Nut50 -- 7537 -- 55--
Crankshaft Assembly
ApplicationNSmLb-- FtLb-- In
Cooling Fan Belt Pulley Bolt10--89
Socket Bolt2317--
Tighten The Bolt200 / 90_148 / 90_--
End Cover Bolt10--89
Crankshaft Bearing Cap Bolt55 / 90_41 / 90_--
Ball Bearing45 / 90_33 / 90_--
Camshaft Sprocket Bolt25 / 90_18 / 90_--
Oil Pump Sprocket Bolt2518--
Piston
ApplicationNSmLb-- FtLb-- In
Connecting Rod Bolt35 / 90_26 / 90_--
Flywheel
ApplicationNSmLb-- FtLb-- In
12-- Sided Stretch Bolt45 / 90_33 / 90_--
Page 557 of 2053
1B3 -- 8 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
SPECIAL TOOLS TABLE (Cont’d)
601 589 02 59 00
Supporting Bridge
667 589 00 31 00
Press Lever
116 589 06 63 00
Magnetic Finger
603 589 01 40 00
Holding Wheel
667 584 02 63 00
Supporting Bar
104 589 00 37 00
Pliers
601 589 02 43 00
Drift
000 589 10 68 00
Cylinder Brush
Page 596 of 2053
1B3 -- 46 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
30. Rotate the crankshaft and set the no.1 cylinder at
TDC.
Notice
Do not rotate the crankshaft to the opposite direc-
tion of engine revolution.
31. Place alignment marks on the camshaft gear and
timing chain.
32. Ensure that the camshaft and the bearing cap mark-
ing are aligned.
33. Remove the starter motor and install the engine lock
onto the flywheel ring gear.
Engine Lock 602 589 00 40 00
Page 620 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 71
D AEW OO M Y_2000
CRANKSHAFT END COVER
Preceding Work : Removal of flywheel and driven plate.
1 Crankshaft Flange
2 End Cover Clean, Loctite 573..............
3 Bolt 10N∙m, Loctite 573 ...................4 Radial Seal Replace.......................
5 Dowel Sleeve
6Bolt 10N∙m (89 lb-in), Loctite 573 ..........
Page 625 of 2053
1B3 -- 76 OM600 ENGINE MECHANICAL
D AEW OO M Y_2000
Removal Procedure
1. Remove the starter motor and install the engine lock
into the wheel ring gear.
Engine Lock 602 589 00 40 00
2. Remove the poly V-- belt.
3. Remove the cooling fan.
Notice
Keep the fan in vertical position.
4. Remove the cooling fan belt pulley (2).
5. Place alignment marks (arrow) on the vibration
damper (5) and crankshaft belt pulley (4).
6. Remove the timing sensor bracket.
Notice
Remove if necessary.