Page 732 of 2053
OM600 ENGINE MECHANICAL 1B3 -- 183
D AEW OO M Y_2000
OIL GALLERY STEEL BALL
Preceding Work : Removal of cooling fan
Removal of the water pump housing
Removal of the flywheel and driven plate
1 Steel Ballφ15mm .........................2 Screw Plug Loctite 241, 50N∙m .............
Notice
The screw plug (2) has to be installed as a repair
solution if the steel ball (1) is leaking.
Page 737 of 2053

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
Page 741 of 2053
1D3 -- 6 OM600 ENGINE COOLING
D AEW OO M Y_2000
WAT E R P U M P
Preceding Work : Removal of cooling fan
Removal of V-- belt
1 Tensioning Lever
2 Gasket Replace..........................
3Bolt 10N∙m (89 lb-in) .....................4 Belt Pulley
5Bolt 10N∙m(89lb-in) .....................
6 Water Pump
Page 742 of 2053
OM600 ENGINE COOLING 1D3 -- 7
D AEW OO M Y_2000
Removal & Installation Procedure
1. Loose the bolts(5) and remove the pulley (4).
Installation Notice
Tightening Torque10 N∙m(89lb-in)
2. Loose the bolts (3).
Installation Notice
Tightening Torque10 N∙m(89lb-in)
3. Pull the tensioning lever(1) to the arrow direction.
4. Remove the water pump(6).
Notice
Clean gasket residues on the sealing surface of wa-
ter pump and replace the gasket.
5. Installation should follow the removal procedure in
the reverse order.
Page 743 of 2053
1D3 -- 8 OM600 ENGINE COOLING
D AEW OO M Y_2000
WATER PUMP HOUSING
Preceding Work : Removal of water pump
Removal of thermostat
Removal of generator
1 Gasket Replace..........................
2 Water Pump Housing
3 Connector
4Bolt 10N∙m (89 lb-in) .....................5 Coolant Hose
6ReturnPipe
7 O -- Ring
8 Temperature Sensor
Notice
The bolt on the arrow should be installed last.
Page 744 of 2053
OM600 ENGINE COOLING 1D3 -- 9
D AEW OO M Y_2000
Removal & Installation Procedure
1. Disconnect the connector(3).
2. Separate the coolant hose (5) and return pipe(6).
3. Remove the bolts(4) evenly.
Installation Notice
Tightening Torque10 N∙m(89lb-in)
Notice
Clean gasket residues on the sealing surface of wa-
ter pump and replace the gasket.
4. Remove the water pump housing(2).
5. Installation should follow the removal procedure in
the reverse order.
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