Page 266 of 2053

M162 ENGINE CONTROLS 1F1 -- 103
D AEW OO M Y_2000
KAA1F410
PEDAL POSITION SENSOR
Removal and installation Procedure
1. Disconnect the negative battery cable.
2. Disconnect the pedal position sensor connector.
3. Unscrew the bolts and nut.
Installation Notice
Tightening Torque
6NSm (53 lb-in)
4. Remove the pedal and sensor assembly.
5. Installation should follow the removal procedure in
the reverse order.
YAA1F220
OXYGEN SENSOR
Removal and Installation Procedure
1. Disconnect the negative battery cable.
Notice:The oxygen sensor uses a permanently at-
tached pigtail and connector. This pigtail should not be
removed from the oxygen sensor. Damage or removal
of the pigtail or the connector could affect proper opera-
tion of the oxygen sensor. Do not drop the oxygen sen-
sor.
2. Disconnect the electrical connector.
3. Carefully remove the oxygen sensor from the exhaust
pipe.
Installation Notice
Tightening Torque
55 NSm (41 Ib-ft)
Important:A special anti-seize compound is used on
the oxygen sensor threads. This compound consists of
a liquid graphite and glass beads. The graphitewill burn
away, but the glass beadswill remain, making the sen-
sor easier to remove. New or serviced sensors will al-
ready have the compound applied to the threads. If a
sensor is removed from any engine and is to be rein-
stalled, the threads must have an anti-seize compound
applied before reinstallation.
4. Coat the threads of the oxygen sensor with an anti-
seize compound, if needed.
5. Installation should follow the removal procedure in
the reverse order.
Page 269 of 2053
D AEW OO M Y_2000
SECTION 1G1
M162 ENGINE INTAKE & EXHAUST
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 other -
wise noted.
TABLE OF CONTENTS
Specifications 1G1 -- 2...........................
Fastener Tightening Specifications 1G1 -- 2.........
Maintenance and Repair 1G1 -- 3..................
On-- Vehicle Service 1G1-- 3........................
Air Cleaner 1G1-- 3.............................Intake Air Duct 1G1--5..........................
Intake Manifold 1G1--7.........................
Resonance Flap 1G1-- 9.........................
Exhaust Manifold 1G1-- 11.......................
Page 271 of 2053
M162 ENGINE INTAKE & EXHAUST 1G1 -- 3
D AEW OO M Y_2000
MAINTENANCE AND REPAIR
ON -- VEHICLE SERVICE
AIR CLEANER
1 Element Assembly
2 Cleaner Assembly -- Air
3 Shield Cover -- Air Intake4 Shield Assembly -- Air Intake
5 Braket Assembly -- Air Cleaner Mounting
6 Braket Assembly -- Shield Surport
Page 282 of 2053
D AEW OO M Y_2000
SECTION 1
ENGINE
SECTION 1A2 (M161 ENGINE)
GENERAL ENGINE INFORMATION
TABLE OF CONTENTS
Specifications 1A2 -- 2............................
Engine Specifications 1A2-- 2.....................
Component Locator 1A2 -- 3.......................
Front View 1A2 -- 3...............................
Side View 1A2-- 4...............................
Performance Curve 1A2-- 5........................
E23 Engine 1A2-- 5..............................
E20 Engine 1A2-- 6..............................
Diagnosis 1A2 -- 7.................................Oil Leak Diagnosis 1A2-- 7........................
Engine Cranking At The
FrontofCrankshaft 1A2--8.....................
Compression Pressure Test 1A2-- 9...............
Cylinder Pressure Leakage Test 1A2-- 11...........
General Information 1A2 -- 13......................
Cleanliness and Care 1A2 -- 13....................
On-- Engine Service 1A2-- 13......................
Page 285 of 2053

GENERAL ENGINE INFORMATION 1A2 -- 13
D AEW OO M Y_2000
GENERAL INFORMATION
CLEANLINESS AND CARE
An automobile engine is a combination of many ma-
chined, honed, polished and lapped surfaces with toler-
ances that are measured in the ten-thousandths of an
inch. When any internal engine parts are serviced, care
and cleanliness are important. A liberal coating of enigne
oil should be applied to friction areas during assembly, to
protect and lubricate the surfaces on initial operation.
Proper cleaning and protection of machined surfaces and
friction areas is part of the repair procedure. This is con-
sidered standard shop practice even if not specifically
stated.
Whenever valve train components are removed for ser-
vice, they should be kept in order. They should be
installed in the same locations, and with the same mating
surfaces, as when they were removed.
Battery cables should be disconnected before any major
work is performed on the engine. Failure to disconnect
cables may result in damage to wire harness or other
electrical parts.
ON-ENGINE SERVICE
Caution: Disconnect the negative battery cable be -
fore removing or installing any electrical unit, or
when a tool or equipment could easily come in con-
tact with exposed electrical terminals. Disconnect -
ing this cable will help prevent personal injury and
damage to the vehicle. The ignition must also be in
LOCK unless otherwise noted.
Notice:Any time the air cleaner is removed, the intake
opening should be covered. Thiswill protect against ac-
cidental entrance of foreign material, which could follow
the intake passage into the cylinder and cause exten-
sive damage when the engine is started.
Page 292 of 2053
GENERAL ENGINE INFORMATION 1A2 -- 9
D AEW OO M Y_2000
COMPRESSION PRESSURE TEST
1 Compression Pressure Tester
2 Diagram Sheet3 Adaptor
4 Sealing Cone
Standard Service Data
Compression Ratio10.4, 9.6
Normal Engine Temperature80°C
Normal Compression
P
E23 Engine(e = 10.4)Min. 11 bar, Max. 15 barp
PressureE20 Engine(e = 9.6)Min. 10.5 bar, Max. 14 bar
Permissible Pressure Difference Between Individual
CylindersMax. 1.5 bar
Page 294 of 2053

D AEW OO M Y_2000
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 other -
wise noted.
TABLE OF CONTENTS
Specifications 1B2 -- 2............................
Fastener Tightening Specifications 1B2 -- 2..........
Special Tools 1B2 -- 4.............................
Special Tools Table 1B2-- 4.......................
Maintenance and Repair 1B2 -- 7...................
On-- Vehicle Service 1B2-- 7.........................
Engine Assembly 1B2-- 7.........................
Crankcase Ventilation System 1B2-- 14.............
Generator 1B2-- 18..............................
Engine Mount 1B2-- 19...........................
Poly V-- Belt 1B2 -- 20.............................
Tensioning Device 1B2-- 22.......................
Tensioning Device Shock Absorber 1B2-- 23........
Poly V-- Belt Inspection 1B2-- 24...................
Cylinder Head Cover 1B2-- 26.....................
Cylinder Head Front Cover 1B2 -- 28...............
Cylinder Head 1B2-- 30...........................
Timing Gear Case Cover 1B2-- 34.................
Crankshaft Sealing Rear Cover 1B2-- 37...........
Belt Pulley and Vibration Damper 1B2-- 39..........
Crankshaft Front Radial Seal 1B2-- 42.............
Crankshaft Rear Radial Seal 1B2-- 44..............
Crankshaft 1B2-- 45.............................
Flywheel / Driven Plate 1B2 -- 51...................
Camshaft Adjuster 1B2-- 54.......................Camshaft Sprocket Bolt 1B2-- 57..................
Camshaft 1B2-- 58..............................
Camshaft Timing Position 1B2 -- 61................
Valve Spring 1B2 -- 63............................
Valve Stem Seal 1B2-- 67........................
Chain Tensioner 1B2-- 68.........................
Timing Chain 1B2-- 72............................
Tensioning Rail 1B2-- 77..........................
Cylinder Head Guide Rail 1B2-- 78.................
Crankcase Guide Rail 1B2-- 80....................
Crankshaft Sprocket 1B2-- 81.....................
Piston 1B2-- 83..................................
Connecting Rod 1B2-- 86.........................
Piston Ring 1B2 -- 88.............................
Oil Pan 1B2-- 90.................................
Engine Oil and Oil Filter Element 1B2-- 92..........
Oil Pump 1B2-- 95...............................
Oil Pressure Relief Valve 1B2-- 97.................
Oil Non-Return Valve 1B2-- 98....................
Oil Dipstick Guide Tube 1B2-- 99..................
Unit Repair 1B2 -- 100............................
Core Plugs in Crankcase 1B2-- 100................
Cylinder Bore 1B2-- 102..........................
Crankcase Mating Surface 1B2-- 104..............
Cylinder Head Mating Surface 1B2-- 106...........
Page 300 of 2053
M161 ENGINE MECHANICAL 1B2 -- 7
D AEW OO M Y_2000
MAINTENANCE AND REPAIR
ON-VEHICLE SERVICE
ENGINE ASSEMBLY