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D AEW OO M Y_2000
SECTION 1D3
OM600 ENGINE COOLING
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 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 -- 5...................On-- Vehicle Service 1D3-- 5.........................
Drain and Filling of Coolant 1D3 -- 5................
Wat er Pum p 1D3 -- 6.............................
Water Pump Housing 1D3-- 8.....................
Cooling Fan Clutch 1D3 -- 10......................
Radiator 1D3-- 12................................
Cooling Sub-- System 1D3-- 14.....................
Thermostat 1D3 -- 16.............................
SPECIFICATIONS
GENERAL SPECIFICATIONS
ApplicationDescription
CoolantALUTEC P-- 78
Mixing Ratio (Water: anticorrosion)50 : 50
Capacity662LA10.5L -- 11Lpy
661LA9.5L -- 10L
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb-- FtLb-In
Water Pump Bolt10--89
Belt Pulley Bolt10--89
Water Pump Housing Return Pipe Bolt10--89
Thermostat Bolt10--89
Cooling Fan Clutch Socket Bolt (Center)4533--
Cooling Fan Clutch Socket Bolt (Side)10--89
Radiator Bolt3--7--27 -- 62
Coolant Sub-- tank Bolt3--7--27 -- 62
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1D3 -- 2 OM600 ENGINE COOLING
D AEW OO M Y_2000
DIAGNOSIS
COOLING CIRCULATION
A Thermostat
B Radiator
D From Heater
EHoseG Deaeration Line
HReservoir
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1D3 -- 4 OM600 ENGINE COOLING
D AEW OO M Y_2000
COOLING SYSTEM LEAKAGE TEST
Tools Required
124589152100Tester
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 reser-
voir.
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.
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OM600 ENGINE COOLING 1D3 -- 5
D AEW OO M Y_2000
MAINTENANCE AND REPAIR
ON -- VEHICLE SERVICE
DRAIN AND FILLING OF COOLANT
Preceding Work : Removal of skid plate
Drain / Filling
1. Loosen the pressure cap of reservoir by 1 notch and
remove pressure and then loosen the cap.
Notice
Do not remove radiator cap when coolant is above
90°C.
2. Open the drain plug and drain the coolant.
Notice
Collect the coolant by using the proper bottle.
3. Remove the drain plug(1) and seal(2) of cylinder
block and drain the coolant.
4. Replace the seal to new one and tighten the drain
plug.
Installation Notice
Tightening Torque30 N∙m (22 lb-ft)
5. Tighten the drain plug of the lower radiator.
6. Fill the coolant through coolant reservoir -- tank.
Notice
DA proportion of 50% by volume of water / anticor-
rosion must be ensured.
7. After engine is running at idle speed, check the level
of coolant. If necessary, add enough specified cool-
ant.
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1D3 -- 12 OM600 ENGINE COOLING
D AEW OO M Y_2000
RADIATOR
Preceding : Removal of cooling fan shroud
1 Radiator Inlet Hose OM662LA : 220mm.....
OM661LA : 321mm ......................
2 Radiator outlet Hose
3 Radiator Deaeration Tube & Hose
4 Clamp5 Spring Clamp
6Bolt 3--7N∙m (27-- 62 lb-in) ................
7Radiator
8 Spring Clamp
9Bolt 3--7N∙m (27-- 62 lb-in) ................
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OM600 ENGINE COOLING 1D3 -- 13
D AEW OO M Y_2000
Removal & Installation Procedure
1. Drain coolant from the radiator.
2. Remove the coolant thermoswich connector from
radiator.
3. Remove the each coolant hose.
4. Remove the auto T/M oil cooling hose and cooling
line.
Installation Notice
TighteningHose : 29-- 40N∙m (21-- 30 lb-ft)Tightening
TorqueTube : 25-- 35N∙m (18--26 lb-ft)
5. Loosen the radiator upper mounting bolt and re-
move the mounting stopper and insulator.
6. Remove the radiator.
7. Check the radiator pin for crack, leakage and bend-
ing and replace it if necessany.
8. Installation should follow the removal procedure in
the reverse order.
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1D3 -- 14 OM600 ENGINE COOLING
D AEW OO M Y_2000
COOLING SUB-- SYSTEM
1 Radiator
2 Cooling Fan Shroud
3Bolt 3--7N∙m (27-- 62 lb-in) ................
4 Cooling Fan Shroud
5 Radiator Deaeration Hose7 Mounting Bracket
8 Make-- up Cooling Hose
9Bolt 3--7N∙m (27-- 62 lb-in) ................
10 Cooling Reservoir -- tank Cap
11 Cooling Reservoir -- tank
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OM600 ENGINE COOLING 1D3 -- 15
D AEW OO M Y_2000
Removal & Installation Procedure
Cooling Fan Shroud
1. Remove the radiator deaeration hose and tube.
Installation Notice
Tightening Torque3--7 N∙m (27-- 62 lb-in)
2. Check the shroud.
3. Installation should follow the removal procedure in
the reverse order.
Coolant Sub-- Tank
1. Drain the coolant from radiator.
2. Remove the each hose.
3. Loosen the mounting bolt of sub-- tank and remove
the coolant sub-- tank.
Installation Notice
Tightening Torque3--7 N∙m (27-- 62 lb-in)
4. Installation should follow the removal procedure in
the reverse order.