Page 199 of 1463
1B2-10 M161 ENGINE MECHANICAL
4. Disconnect the coupling of HFM sensor and remove the air
cleaner cross pipe.
6. Loosen the radiator drain cock and drain the coolant.
Notice
Open the coolant reservoir cap. 5. Remove the air cleaner cover. Remove the mounting bolts
and air cleaner housing and element assembly.
Removal & Installation Procedure
1. Disconnect the negative terminal of battery.
2. Remove the hood.
3. Remove the under cover.
Installation Notice
Tightening Torque 28 - 47 Nm
Page 315 of 1463
OM600 ENGINE MECHANICAL 1B3-13
4. Remove the radiator drain cock and drain the coolant.
Notice
Open the coolant reservoir tank cap.
3. Remove the skid plate.
Installation Notice
Tightening Torque 28 - 47 Nm
5. Remove the drain plug (1) and seal (2) from the cylinder
block and drain the coolant completely.
6. After draining, replace the seal and reinstall the drain plug.
Installation Notice
7. Disconnect the lower coolant hose from the radiator.
Tightening Torque 30 Nm
Removal & Installation Procedure
1. Disconnect the negative terminal of battery.
2. Remove the hood.
Page 490 of 1463

SECTION 1D1
M162 ENGINE COOLING
Specifications . . . . . . . . . . . . . . . . . . . . . . . 1D1-1
General Specifications . . . . . . . . . . . . . . . . . 1D1-1
Fastener Tightening Specifications . . . . . . . . 1D1-2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . 1D1-3
Special Tools Table . . . . . . . . . . . . . . . . . . . . 1D1-3
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . 1D1-4
System Leakage Test . . . . . . . . . . . . . . . . . . 1D1-4
Maintenance and Repair . . . . . . . . . . . . . . 1D1-5
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . 1D1-5Coolant Drain and Fill Up . . . . . . . . . . . . . . . 1D1-5
Coolant Connection Fitting . . . . . . . . . . . . . . 1D1-7
Water Pump . . . . . . . . . . . . . . . . . . . . . . . . . 1D1-8
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . 1D1-10
Oil Cooler Pipe Line . . . . . . . . . . . . . . . . . . 1D1-11
Cooling Fan and Viscous Clutch . . . . . . . . . 1D1-12
Cooling Fan Shroud . . . . . . . . . . . . . . . . . . 1D1-14
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . 1D1-15
SPECIFICATIONS
GENERAL SPECIFICATIONS
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 otherwise
noted.
TABLE OF CONTENTS
Description
Water Cooling Forced Circulation
Double Cross Flow
70,000 kcal/h
580 x 482 x 45 mm
f 460, Six Blades
ALUTEC - P78
50 : 50
11.3 L
3.4 L
1.4 bar Application
Cooling Type
Radiator
Dimension(Width´Height´Thickeness)
Cooling Fan
Anti-Freeze Agent
Mixing Ratio of Anti-Freeze Agen with Water (Anti-Freeze Agent : Water)
Coolant Capacity
Reservoir Capacity
Cap Operating Pressure (Reservoir Tank Pressure Cap)
Circulation Type
Radiation Capability
Page 494 of 1463
M162 ENGINE COOLING 1D1-5
MAINTENANCE AND REPAIR
ON-VEHICLE SERVICE
COOLANT DRAIN AND FILL UP
Draning & Filling up Procedure
1. Loosen the cap a little and release pressure and remove
the cap.
Notice
For the risk of scalding, the cap must not be opened unless
the coolant temperature is below 90
oC.
2. Loosen the radiator lower drain cock and drain the coolant.
Notice
Collect coolant by using a proper container.
3. Drain the coolant from the crankcase by inserting a hose
(dia. 14mm) onto the drain bolt on the side of crankcase
(exhaust manifold) and by loosening the plug.
Notice
lJust loosen the drain plug to drain the coolant and do
not remove the plug completely.
lCollect coolant by using proper container.
4. After complete draining of the coolant, remove the hose
connector to drain plug and reinstall the drain plug.
Installation Notice
5. Tighten the radiator lower drain cock.
Tightening Torque 30 Nm
Page 506 of 1463

Circulation Type
Radiation
Capability
SECTION 1D2
M161 ENGINE COOLING
Specifications . . . . . . . . . . . . . . . . . . . . . . . 1D2-1
General Specifications . . . . . . . . . . . . . . . . . 1D2-1
Fastener Tightening Specifications . . . . . . . . 1D2-2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . 1D2-3
Special Tools Table . . . . . . . . . . . . . . . . . . . . 1D2-3
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . 1D2-4
System Leakage Test . . . . . . . . . . . . . . . . . . 1D2-4
Maintenance and Repair . . . . . . . . . . . . . . 1D2-5
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . 1D2-5Coolant Drain and Fill Up . . . . . . . . . . . . . . . 1D2-5
Cooling Fan and Viscous Clutch . . . . . . . . . . 1D2-7
Coolant Pump . . . . . . . . . . . . . . . . . . . . . . . . 1D2-9
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . 1D2-11
Thermostat Housing Assembly . . . . . . . . . . 1D2-12
Removal and Installation of Cooling
Fan Shroud . . . . . . . . . . . . . . . . . . . . . . . 1D2-14
Removal and Installation of Radiator . . . . . 1D2-15
SPECIFICATIONS
GENERAL SPECIFICATIONS
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 otherwise
noted.
TABLE OF CONTENTS
Description
Water Cooling Forced Circulation
Down Flow
61,500 kcal/h
58,000 kcal/h
680 x 415 x 25 mm
680 x 415 x 28 mm
f 460, 9 Blades
ALUTEC-P78, Dragon Power Coolant A
50 : 50
10.5 L
3.4 L
1.4 bar Application
Cooling Type
Radiator
Dimension(Width´Height´Thickeness)
Cooling Fan
Anti-Freeze Agent
Mixing Ratio of Anti-Freeze Agen with Water (Anti-Freeze Agent : Water)
Coolant Capacity
Reservoir Capacity
Cap Operating Pressure (Reservoir Tank Pressure Cap)
Page 510 of 1463
M161 ENGINE COOLING 1D2-5
MAINTENANCE AND REPAIR
ON-VEHICLE SERVICE
COOLANT DRAIN AND FILL UP
Draning & Filling up Procedure
1. Loosen the cap a little and release pressure and remove
the cap.
Notice
For the risk of scalding, the cap must not be opened unless
the coolant temperature is below 90oC.
2. Loosen the radiator lower drain cock and drain the coolant.
Notice
Collect coolant by using a proper container.
3. Drain the coolant from the crankcase by inserting a hose
(dia. 14mm) onto the drain bolt on the side of crankcase
(exhaust manifold) and by loosening the plug.
Notice
lJust loosen the drain plug to drain the coolant and do
not remove the plug completely.
lCollect coolant by using proper container.
Page 522 of 1463

SECTION 1D3
OM600 ENGINE COOLING
Specifications . . . . . . . . . . . . . . . . . . . . . . . 1D3-1
General Specifications . . . . . . . . . . . . . . . . . 1D3-1
Fastener Tightening Specifications . . . . . . . . 1D3-1
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . 1D3-2
Cooling Circulation . . . . . . . . . . . . . . . . . . . . 1D3-2
Thermostat Operation . . . . . . . . . . . . . . . . . 1D3-3
Cooling System Leakage Test . . . . . . . . . . . 1D3-4
Maintenance and Repair . . . . . . . . . . . . . . 1D3-5On-Vehicle Service . . . . . . . . . . . . . . . . . . . . 1D3-5
Drain and Filling of Coolant . . . . . . . . . . . . . 1D3-5
Coolant Pump . . . . . . . . . . . . . . . . . . . . . . . . 1D3-6
Coolant Pump Housing . . . . . . . . . . . . . . . . . 1D3-8
Cooling Fan Clutch . . . . . . . . . . . . . . . . . . . 1D3-10
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . 1D3-12
Cooling Sub-System . . . . . . . . . . . . . . . . . . 1D3-14
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . 1D3-16
TABLE OF CONTENTS
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 otherwise
noted.
Application
Coolant
Mixing Ratio (Water : anticorrosion)
CapacityDescription
ALUTEC P- 78
50 : 50
10.5L - 11L
9.5L - 10L
SPECIFICATIONS
GENERAL SPECIFICATIONS
Application
Coolant Pump Bolt
Belt Pulley Bolt
Coolant Pump Housing Return Pipe Bolt
Thermostat Bolt
Cooling Fan Clutch Socket Bolt (Center)
Cooling Fan Clutch Socket Bolt (Side)
Radiator Bolt
Coolant Sub-tank BoltN
· ·· ·
·m
10
10
10
10
45
10
3 - 7
3 - 7
FASTENER TIGHTENING SPECIFICATIONS
662LA
661LA
Page 525 of 1463
1D3-4 OM600 ENGINE COOLING
COOLING SYSTEM LEAKAGE TEST
Tools Required
124 589 15 21 00 Tester
Test
1. Loosen the pressure cap by 1 notch and remove the cap
after.
Notice
Do not remove radiator cap when coolant is above 90°C.
2. Add the coolant to the arrow mark of coolant reservoir.
3. Connect the special tool to the injector of reservoir and apply
1.4bar pressure.
Tester 124 589 15 21 00
4. If the pressure on the tester drops, check the hose, pipe
and leakage and, replace or retighten.