Page 739 of 2053
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.
Page 740 of 2053
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.
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.
Page 748 of 2053
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.
Page 750 of 2053
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.
Page 751 of 2053
1D3 -- 16 OM600 ENGINE COOLING
D AEW OO M Y_2000
THERMOSTAT
1 Thermostat
2 Seal Replace.............................
3 Thermostat Housing Cover4 Coolant Hose
5 Bolt 10N∙m(89lb-in) .....................
Page 752 of 2053
OM600 ENGINE COOLING 1D3 -- 17
D AEW OO M Y_2000
Removal & Installation Procedure
1. Drain the coolant completely.
2. Disconnect the coolant hose(4) from the thermostat
housing cover(3).
3. Remove the bolts(5) and then remove the thermo-
stat(1) and housing cover(3)
Installation Notice
Align the groove on thermostat and the housing cov-
er rib(arrow).
Tightening Torque10 N∙m(89lb-in)
Notice
Replace the seal(2).
4. Installation should follow the removal procedure in
the reverse order.