Page 152 of 1574
1B1-116 M162 ENGINE MECHANICAL Measurement of Mating Surface
1. Measure the height (H) of the cylinder head (refer to Service
data standard ).
2. Check the mating surface of the cylinder head.
3. Mill the sharp edge of the combustion chamber.
4. Re-measure the height (H) of the cylinder head.
5. Seal the intake and exhaust valves.
6. Measure the dimension (T) between the camshaft bearing and the valve system (refer to Service data standard).
7. Mill the cylinder head valve seat (refer to Service data
standard ).
Universal Tool
Surface Grinding Machine
Sceledum, Type RTYRoaro
Schio/Italy
Page 153 of 1574

SECTION 1B2
M161 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 . . . . . . . . . . . . . . . . . . . . . . . 1B2-2Fastener Tightening Specifications . . . . . . . . 1B2-2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . 1B2-4 Special Tools Table . . . . . . . . . . . . . . . . . . . . 1B2-4
Maintenance and Repair . . . . . . . . . . . . . . 1B2-9
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . 1B2-9
Engine Assembly . . . . . . . . . . . . . . . . . . . . . 1B2-9
Crankcase Ventilation System . . . . . . . . . . 1B2-17
Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . 1B2-21
Power Steering Pump and A/C Bracket . . . 1B2-22
Hydraulic Engine Mounting Insulator . . . . . . 1B2-25
Poly V-Belt . . . . . . . . . . . . . . . . . . . . . . . . . 1B2-28
Tensioning Deivce . . . . . . . . . . . . . . . . . . . . 1B2-30
Tensioning Device Shock Absorber . . . . . . 1B2-31
Poly V-Belt Inspection . . . . . . . . . . . . . . . . . 1B2-32
Cylinder Head Cover . . . . . . . . . . . . . . . . . 1B2-35
Cylinder Head Front Cover . . . . . . . . . . . . . 1B2-37
Cylinder Head . . . . . . . . . . . . . . . . . . . . . . . 1B2-39
Timing Gear Case Cover . . . . . . . . . . . . . . 1B2-44
Crankshaft Sealing Rear Cover . . . . . . . . . 1B2-47
Belt Pulley and Vibration Damper . . . . . . . . 1B2-49
Crankshaft Front Radial Seal . . . . . . . . . . . 1B2-52
Crankshaft Rear Radial Seal . . . . . . . . . . . 1B2-53
Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . 1B2-54
Flywheel/Driven Plate . . . . . . . . . . . . . . . . . 1B2-60
Camshaft Adjuster . . . . . . . . . . . . . . . . . . . 1B2-62
TABLE OF CONTENTS
Camshaft Sprocket Bolt . . . . . . . . . . . . . . . 1B2-65
Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . 1B2-66
Camshaft Timing Position . . . . . . . . . . . . . . 1B2-69
Valve Spring . . . . . . . . . . . . . . . . . . . . . . . . 1B2-72
Valve Stem Seal . . . . . . . . . . . . . . . . . . . . . 1B2-76
Chain Tensioner . . . . . . . . . . . . . . . . . . . . . 1B2-77
Timing Chain . . . . . . . . . . . . . . . . . . . . . . . . 1B2-80
Tensioning Rail . . . . . . . . . . . . . . . . . . . . . . 1B2-85
Cylinder Head Guide Rail . . . . . . . . . . . . . . 1B2-86
Crankcase Guide Rail . . . . . . . . . . . . . . . . . 1B2-87
Crankshaft Sprocket . . . . . . . . . . . . . . . . . . 1B2-88
Piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1B2-90
Connecting Rod . . . . . . . . . . . . . . . . . . . . . 1B2-93
Piston Ring . . . . . . . . . . . . . . . . . . . . . . . . . 1B2-95
Oil Pan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1B2-97
Engine Oil and Oil Filter Element . . . . . . . . 1B2-99
Oil Pump . . . . . . . . . . . . . . . . . . . . . . . . . 1B2-101
Oil Pressure Relief Valve . . . . . . . . . . . . . 1B2-103
Oil Non-Return Valve . . . . . . . . . . . . . . . . 1B2-104
Oil Dipstick Guide Tube . . . . . . . . . . . . . . 1B2-105
Unit Repair . . . . . . . . . . . . . . . . . . . . . . . 1B2-106 Core Plugs in Crankcase . . . . . . . . . . . . . 1B2-106
Cylinder Bore . . . . . . . . . . . . . . . . . . . . . . 1B2-108
Crankcase Mating Surface . . . . . . . . . . . . 1B2-110
Cylinder Head Mating Surface . . . . . . . . . 1B2-112
Page 161 of 1574
M161 ENGINE MECHANICAL 1B2-9
MAINTENANCE AND REPAIRON-VEHICLE SERVICE
ENGINE ASSEMBLY
Tools Required
000 589 10 99 01 Torque Wrench
000 589 40 37 00 Hose Clamp
112 589 00 72 00 Oil Extractor
Page 177 of 1574
M161 ENGINE MECHANICAL 1B2-25
HYDRAULIC ENGINE MOUNTING INSULATOR Service Data
Page 202 of 1574
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)
Page 208 of 1574

1B2-56 M161 ENGINE MECHANICAL Selection of Crankshaft Main Bearing
1. Crankcase SideThere are seven punching marks on the mating surface to oil pan. This mark is correspondent to the bearing
distinguished by color. Select the relevant bearing according to the punching mark when repaired.
2. Crankshaft Bearing Cap Side Select the crankshaft main bearing according to themarking letter on the crankshaft main journal whenrepaired.
Color Dot Marking
Blue
Yellow
Red
White VioletCrankshaft Journal Diameter (mm)
57.960 - 57.965 57.955 - 57.960 57.950 - 57.95557.945 - 57.95057.940 - 57.945
Punching Mark
Bearing Color Selected
Blue
Yellow
Red
Marking Letter
B Y
R
W VBearing Color Selected
Blue
Yellow Red
White Violet
Service Data Unit : mm
Crankshaft
Bearing Jour- nal Diameter Crankshaft
Bearing
Diameter Crankshaft
Journal Width at fit bearing Connecting Rod
Bearing Journal Diameter Connecting
Rod Bearing
Jourmal Width
Standard size
1st repair size
2nd repair size 3rd repair size4th repair size 57.950-57.965 57.700-57.71557.450-57.46557.200-57.215
56.950-56.965 58 24.50-24.533 47.94-47.96
47.75 47.5047.25 47.0027.958-28.042
Crankshaft Standard
and Repair Size
-
--
Page 211 of 1574
M161 ENGINE MECHANICAL 1B2-59
Service Data Standard (Crankshaft Main Bearing Gap) (Connecting Rod Bearing Gap)
Item
Main Bearing Journal ( NO. 1, 5, 7) Measuring Position
RadialAxial Gap (mm)
Static condition :0.015-0.039
Dynamic condition: 0.031-0.051
(Consider the expansion 0.011-0.016)
0.010 - 0.254
Item
Connecting Rod Bearing Measuring Position
Radial Gap (mm)
0.020 - 0.065
Page 212 of 1574
1B2-60 M161 ENGINE MECHANICAL
FLYWHEEL/DRIVEN PLATE Preceding Work : Removal of manual or automatic transmission
1 Flywheel Mounting Bolt(M10 x 22, 8 pieces) ................ 1st Step 45 Nm 2nd Step 90°+10 °
2 Plate 3 Driven Plate (A/T)
4 Dowel Pin
5 Flywheel (M/T)
Service Data Standard (Stretch Bolt)
Nominal Size
Stretch Side Diameter
Bolt Length
Tightening Torque
M x 1.5
8.5 - 0.2 mm 8.0 mm
21.8 - 22.2 mm-
When New
Min. Diameter When NewDd L
1st step 50 Nm, 2nd step 90 °