Page 89 of 1463
1B1-16 M162 ENGINE MECHANICAL
CRANKCASE VENTILATION SYSTEM
1 Crankcase
2 Air Admission Port in Crankcase
3 Oil Drain Port
4 Filter
5 Gasket
6 A/C Bracket
7 Oil Drain Pipe
8 Oil Pan
9 Air Admission Line
10 Vent Line
11 Restriction Hole (Diameter = 2 mm)
12 Intake Manifold13 Intake Air Duct (Cross Pipe)
14 Cylinder Head Cover
15 Oil Separator
16 Oil Separator
17 Air Admission and Vent Connection
18 Air Admission and Vent Connection
19 Throttle Valve
20 Vent Line
A Fresh Air
B Blowby Gas in Partial Load
C Blowby Gas in Full Load
Page 90 of 1463

M162 ENGINE MECHANICAL 1B1-17
Operation at Idling and Mid-Load
lIt show that the throttle valve (19) is closed or very partially
opened and the vacuum pressure in intake manifold is high.
The blowby gas in the crankcase in partial load flows into
the intake manifold through the vent line (20) after passing
the air conditioner bracket (6) and the filter (4). The air
reentered into the intake manifold will be dilluted on the flow
through the restriction hole (11) in the vent line (10).
The circulated engine oil is separated at the air conditioner
bracket (6) and then returns into the oil pan through the
drain pipe (7).
The vacuum pressure generated at the crankcase sucks
fresh air from intake air line(13) through the air admission
and vent connection (17,18).
The fresh air prevents engine oil from being contami-nated
and the air admission and vent connection (17,18) is
designed to control the rapid pressure changes in intake
air line (13).
Operation at Full-Load
lThe throttle valve (19) is fully opened.
All the blowby gases flow into the intake air duct (13) after
passing through the oil separator (15,16) of the cylinder
head cover (14) when fully loaded. This dilluted air will be
supplied to the combustion chamber through the intake
manifold (12).
Page 93 of 1463
1B1-20 M162 ENGINE MECHANICAL
Removal & Installation Procedure
1. Remove the belt pulley.
Installation Notice
2. Disconnect the hydraulic pipe of the power steering pump
and drain the oil.
3. Unscrew the bolts (arrows) and remove the steering pump.
Installation Notice Notice
Pull the tensioning pulley clockwise as shown in the figure.
4. Remove the compressor after disconnecting the wiring
connector and refrigerant pipe of A/C compressor.
Notice
Discharge all the refrigerant before removing the pipes.
Tightening Torque 40.5 - 49.5 Nm
Tightening Torque 22.5 - 27.5 Nm
Page 94 of 1463
M162 ENGINE MECHANICAL 1B1-21
5. Disconnect the vent hose from the A/C bracket.
6. Unscrew all the mounting bolts (arrows) and remove the
A/C bracket and the gasket.
Installation Notice
7. Clean the sealing surface.
8. Replace the gasket with new one.
9. Installation should follow the removal procedure in the
reverse order.
10. Check the oil leakage by operating the engine after
installation.
Tightening Torque 22.5 - 27.5 Nm
Page 97 of 1463
1B1-24 M162 ENGINE MECHANICAL
1 Upper Nut
2 Hydraulic Installor.................62-93 Nm
3 Lower Nut.............................28-47 Nm
Removal and Installation Procedure
1. Unscrew the upper nut(1) on engine mounting and remove
the engine.
Installation Notice
3. Installation should follow the removal procedure in the
reverse order.
Tightening Torque 62 - 93 Nm
2. Unscrew the lower nut(3) and remove the hydraulic engine
mounting insulator.
Installation Notice
Tightening Torque 28 - 47 Nm
Notice
If the insulator is spotted with oil, replace the hydraulic
insulator assembly.
Page 105 of 1463
1B1-32 M162 ENGINE MECHANICAL
Removal & Installation Procedure
1. Remove the intake air duct.
Installation Notice
2. Remove the ignition cable cover.
Installation Notice
3. Remove the spark plug connector and ignition cable.
4. Unscrew all the bolts (2,3) and remove the head cover and
the gasket.
Installation Notice Notice
Unscrew the seven (M6 x 60) bolts and remove the ignition
cable cover.
Notice
Replace the gasket with a new one if necessary.
5. Installation should follow the removal procedure in the
reverse order.
6. Check for oil leaks by operating the engine.
Tightening Torque 8 - 9 Nm
Tightening Torque 9 - 10 Nm
Tightening Torque 9 - 10 Nm
Page 110 of 1463
M162 ENGINE MECHANICAL 1B1-37
7. Remove the cylinder head bolts in numerical order.
Installation Notice
8. Check the length of the cylinder head bolt.
Installation Notice
Box Wrench Insert 000 589 01 10 00
lReplace the bolt if the measured length exceed the
max. length.
lApply the oil to the thread surface of bolt.
9. Carefully remove the cylinder head and check the mating
surface.
10. Installation should follow the removal procedure in the
reverse order. 6. Remove the guide rail fixing pin from the cylinder head using
the sliding hammer (01) and the threaded pin (02).
Sliding Hammer 116 589 20 33 00
Threaded Pin 116 589 02 34 00
Tightening Torque1st step 55 Nm
2nd step 9 0 °
3rd step 9 0 °
Length (L)New 160 ± 0.8 mm
Max. 162 ± 0.7 mm
Page 112 of 1463
M162 ENGINE MECHANICAL 1B1-39
3. Remove the cooling fan and the viscous clutch. Unscrew
the three bolts from the cooling fan bracket and remove the
bracket (arrows).
Installation Notice
4. Remove the timing gear case cover after unscrewing the
bolts (3) and (4) from the timing gear case cover and the
bolt (9) from the oil pan.
Notice
Be careful not to damage the oil pan gasket.
Installation Notice
lApply the sealant after cleaning the timing gear case
cover surface.
lBe careful not to stain the oil chamber of chain tensioner
with the sealant.
5. Installation should follow the removal procedure in the
reverse order.
6. Warm up the engine and check for oil leaks.
Tightening Torque 22.5 - 27.5 Nm
Tightening TorqueBolt (3,4) 22.5 - 27.5 Nm
Bolt (9) 9 - 11 Nm