Page 251 of 1574
M161 ENGINE MECHANICAL 1B2-99
ENGINE OIL AND OIL FILTER ELEMENT
1 Oil Filter Cover.......................................... 25 Nm
2 O-ring .................................................... Replace
3 Oil Filter Element4 Oil Drain Plug
5 Oil Filter Bypass Valve
6 Oil Filter Cap
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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
Page 266 of 1574

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
Page 267 of 1574
1B3-2 OM600 ENGINE MECHANICALSPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
N
m
28 - 47 30
3 - 7
8 - 18
20 - 34 30
70 - 80 81 - 8450 - 75
N
m
10 23
200 / 90 °
10
55 / 90 °
45 / 90 °
25 / 90 °
25
N
m
35 / 90 °
N
m
45 / 90 °
Application
Skid Plate Bolt Drain Plug Bolt Coolong Fan Shroud BoltControl Linkage NutClutch Linkage Cylinder NutExhaust Manifold Bolt
Propeller Shaft Bolt & Nut (Axle) Propeller Shaft Bolt & Nut (T/C)
Engine Mounting Nut
Application
Cooling Fan Belt Pulley Bolt Socket Bolt
Tighten The BoltEnd Cover BoltCrankshaft Bearing Cap Bolt Ball Bearing Camshaft Sprocket BoltOil Pump Sprocket Bolt
Application
Connecting Rod Bolt
Application
12-Sided Stretch Bolt
Engine Assembly
Crankshaft Assembly Piston
Flywheel
Cylinder Head
Application
Prechamber Threaded Ring Cylinder Head Cover Bolt Fuel Injsction Pipe NutSocket BoltFuel Filter Pipe BoltIdle Pulley Bolt Damper Bolt N
m
130 10 18252523 21
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1B3-16 OM600 ENGINE MECHANICAL
16. Remove the power steering pump lines.Notice Completely drain the fluid.
17. Disconnect the fuel feed line with prefilter from the feed pump on injection pump.
18. Vehicle with automatic transmission. Remove the hydraulic lines (19, 20) from oil cooler (2).
19. Disconnect the engine harness.
20. Disconnect the preheating time relay cable.
Page 309 of 1574
1B3-44 OM600 ENGINE MECHANICAL
22. Remove the cable channel.
23. Disconnect the cables from the glow plug sensor andcoolant temperature sensor.
24. Remove the heater pipe bracket from the oil filter.
25. Pry off the clamp and push the heater feed pipe forward and then pull out the pipe.
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OM600 ENGINE MECHANICAL 1B3-61
38. Replace the O-ring of heater feed pipe and install it to thecylinder head. NoticeFor installation, clean the hole.
39. Install the bracket of heater feed pipe to the oil filter.
40. Install the fuel pipe and the accelerator control linkage.
41. Connect the fuel lines to the injection nozzles and to the injection pump. Box Wrench Insert 000 589 77 03 00
Tightening Torque 18 Nm
Page 328 of 1574

OM600 ENGINE MECHANICAL 1B3-63
TIMING CASE COVER
Preceding Work : Removal of the cooling fanRmoval of the V-belt tensioning device Removal of the vibration damper and hub Removal of the alternator
1 Bolt............................................................ 10Nm
2 Cylinder Head Cover
3 Gasket ................................................... Replace
4 Socket Bolt ................................................ 25Nm
5 Fuel Filter
6 Square Nut
7 Oil Pan
8 Socket Bolt ................................................ 10Nm
9 Bolt .................................................... M6 : 10Nm
M8 : 23Nm 10 Power Steering Pump
11 Bolt
12 Belt Pulley 13 Bolt
............................................................ 32Nm
14 Timing Case Cover
15 Bolt ............................................................ 23Nm
16 Alternator Bracket
17 Bolt ............................................................ 45Nm
18 Bolt ............................................................ 25Nm
19 Bolt ............................................................ 10Nm
20 Closing Cover
21 Socket Bolt ................................................ 23Nm
22 Guide Pulley
23 Bolt .............................................................. 9Nm
24 Guide Pulley Bracket
25 Nut ............................................................. 23Nm