Page 788 of 1463
1G1-8 M162 ENGINE INTAKE & EXHAUST
Function Description
A pneumatically actuated resonance flap (5) is located on the
intake manifold, and will be opened and closed by load, which
operates resonance flap according to engine and controlled
by ECU and rpm.
1. Resonance flap closed (at idle/partial load : less than
3,800/rpm)
The switch valve (7) will be adjusted by ECU and resonance
falp will be colosed. By increasing air flow passage through
dividing intaking air flow toward both air collection housing
(8). This leads to a signficant increase in the torque in the
lower speed range.
2. Resonance flap open (at full load : over 3,800/rpm)
The switch valve (7) will not be adjusted by ECU and
resonance falp (5) will be open. The colllected air in the air
collection housing (8) will not be divided and intaking air
passage will be shorten.
Page 790 of 1463
1G1-10 M162 ENGINE INTAKE & EXHAUST
Tools Required
103 589 01 39 00 Caulking Bolt
Removal & Installation Procedure
1. Remove the flange bolt from the exhaust manifold, and
disconnect the front exhaust pipe.
Installation Notice
Notice
Check for nut damages and replace the nut if necessary.
2. Remove the 23 nuts (1) from the stud bolt, and remove the
exhaust manifold.
Installation Notice
3. Replace the gasket (2).
4. Installation is reverse order of the removal.
Replacement of Rivet Nut
1. Pull out the rivet nut from the connecting point of the exhaust
manifold and the exhaust pipe using a proper bolt (arrow).
2. Insert a new rivet nut into the exhaust manifold hole, and
tighten with a special tool (Caulking Bolt).
Installation Notice
Caulking Bolt 103 589 01 39 00
Tightening Torque 30 Nm
Tightening Torque 26 - 34 Nm
Tightening Torque 30 Nm
Page 794 of 1463
M161 ENGINE INTAKE & EXHAUST 1G2-3
Removal & Installation Procedure
1. Release the clamp securing HFM sensor and air cleaner.
2. Disengage the air cleaner assembly and HFM sensor
assembly.
3. Unserew the mounting bolt(6) from the bracket.
Installation Notice
Tightening Torque 22.5 - 27.5 Nm
4. Release the clamp from air cleaner assembly housing and
remove the cover.
5. Remove the air cleaner assembly.
6. Remove the air cleaner housing from insulator.
Notice
Make sure the air cleaner to be seated in insulator.
7. Disengage the air duct hose and air cleaner housing and
remove the housing.
8. Remove the air duct hose.
9. Unscrew the two bolts(7) from air inlet duct.
Installation Notice
10. Remove the air inlet duct.
11. Installation should follow the removal procedure in the
reverse order.
Tightening Torque 8 - 9 Nm
Page 799 of 1463
1G2-8 M161 ENGINE INTAKE & EXHAUST
Removal & Installation Procedure
1. Disconnect the battery ground cable.
2. Remove idle speed control plug connector (arrow).
3. Disconnect the brake booster vacuum line and other
vacuum lines.
4. Disconnector the rod from bearing bracket assembly and
remove the connection piece (8).
Installation Notice
Tightening Torque 36 - 44 Nm
5. Unscrew the three bolts (4) and remove the idle regulator
and intermediate flange (6).
Installation Notice
Tightening Torque 22.5 - 27.5 Nm
6. Unscrew the two bolts (M8 X 16) and remove the support
assembly (arrow).
Installation Notice
7. Unscrew the intake manifold assembly mounting bolts (1)
and remove the intake manifold and gasket.
Installation Notice
Notice
Replace the gasket with new one.
8. Installation should follow the removal procedure in the
reverse order.
9. Start the engine and check for leaks in each connection.
Tightening Torque 22.5 - 27.5 Nm
Tightening Torque 22.5 - 27.5 Nm
Page 800 of 1463
M161 ENGINE INTAKE & EXHAUST 1G2-9
EXHAUST MANIFOLD
1 Oxygen Sensor..............................49.5-60.5 Nm
2 Bolt (4 pieces)........................................ 9-11 Nm
3 Upper Cover
4 Nut (11 pieces)...............................31.5-38.5 Nm5 Exhaust Manifold
6 Flange Bolt & Exhaust Pipe
Mounting Nut............................................ 30 Nm
7 Gasket ................................................... Replace
Removal & Installation Procedure
1. Remove the oxygen sensor if necessary.
Installation Notice
Tightening Torque 49.5 - 60.5 Nm
2. Unscrew the bolt (2) and remove the exhaust manifold upper
cover (3).
3. Unscrew the flange bolt (6) of front exhaust pipe and
separate the front exhaust pipe.
Installation Notice
Tightening Torque 30 Nm
Notice
Check the exhaust pipe mounting nut, and replace it with
new one if necessary.
Page 801 of 1463
1G2-10 M161 ENGINE INTAKE & EXHAUST
4. Unscrew the eleven nuts (4) and remove the exhaust
manifold (5) and gasket (7).
Installation Notice
Tightening Torque 31.5 - 38.5 Nm
5. Replace the gasket (7) with new one.
6. Installation should follow the removal procedure in the
reverse order.
Page 806 of 1463
1G3-4 OM600 ENGINE INTAKE & EXHAUST
Removal & Installation Procedure
1. Loosen the air duct hose clamp and then remove the air
cleaner and air duct hose.
2. Disconnect the air cleaner housing cover clamp and remove
the cover and element.
Tightening Torque 9 - 11 Nm 3. Loosen the nut (4EA) and remove the air cleaner housing
from the intake manifold.
Notice
Do not fold the rubber.
Operating IntervalClean
Replaceevery 20,000km
every 60,000km
4. Loosen the clamp and remove the air duct hose.
5. Loosen the mounting nut and bolt.
6. Remove the air inlet duct and hose.
7. Installation should follow the removal procedure in the
reverse order.
Page 809 of 1463
OM600 ENGINE INTAKE & EXHAUST 1G3-7
Removal & Installation Procedure
1. Remove the bolt from the exhaust manifold and then remove
the front exhaust pipe.
Installation Notice
Tightening Torque 15 - 18 Nm
Notice
When tightening the nut(3), maintain the clearance between
exhaust manifold(1) and front exhaust pipe.
2. Remove the nut from the front of center muffler and then
remove the front exhaust pipe.
Installation Notice
3. Remove the nut from the rear of center muffler and then
remove the tail muffler.
Installation Notice
4. Remove the muffler mounting hanger from the rubber pad
and remove the center muffler and tail muffler.
Notice
Check the gasket, if necessary, replace the new one.
5. Installation should follow the removal procedure in the
reverse order.
Tightening Torque 28 - 47 Nm
Tightening Torque 28 - 47 Nm