Page 301 of 2053
1B2 -- 8 M161 ENGINE MECHANICAL
D AEW OO M Y_2000
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 NSm (21 -- 35 lb-ft)
4. Disconnect the coupling of HFM sensor and remove
the air cleaner cross pipe.
5. Remove the air cleaner cover. Remove the mounting
bolts and air cleaner housing and element assembly.
6. Loosen the radiator drain cock and drain the coolant.
Notice:Open the coolant reservoir cap.
Page 302 of 2053
M161 ENGINE MECHANICAL 1B2 -- 9
D AEW OO M Y_2000
7. Loosen the cylinder block drain plug and then drain
the coolant completely.
Installation Notice
Tightening Torque
30 NSm (22 lb-ft)
Notice:Replace the seal before installation of the drain
plug.
8. Remove the cooling fan shroud. Refer toSection
1D2, Engine Cooling.
9. Disconnect the each hose from radiator.
10. Remove the upper mounting bolts of radiator and
then remove the radiator.
Page 383 of 2053
1B2 -- 90 M161 ENGINE MECHANICAL
D AEW OO M Y_2000
OIL PAN
1Bolt
2Bolt
3Bolt
4Bolt5Bolt
6OilPan
7 Gasket
Removal & Installation Procedure
1. Remove the drain plug and drain the oil completely.
2. Unscrew the bolts and remove the oil pan and gasket.
Notice:Arrange the bolts according to each size.
3. Clean the inside of oil pan and sealing surface, then
apply the sealant.
4. Replace the gasket with new one.
5. Install the oil pan with gasket, and tighten each bolt in
specified torque.
6. Check for oil leaks while running the engine.
Page 397 of 2053

1D2 -- 2 M161 ENGINE COOLING
D AEW OO M Y_2000
SPECIFICATIONS
GENERAL SPECIFICATIONS
ApplicationDescription
Cooling TypeWater Cooling Forced Circulation
RadiatorCirculation TypeDown Flow
Radiation61,500 kcal/h
Capability58,000 kcal/h
Dimension (Width x Height x Thickeness)680 x 415 x 25 mm(g)
680 x 415 x 28 mm
Cooling Fanφ460, 9 Blades
Anti-- Freeze AgentALUTEC-- P78, Dragon Power
Coolant A
Mixing Ratio of Anti-- Freeze Agen with Water (Anti-- Freeze Agent : Water)50 : 50
Coolant Capacity10.5 L
Reservoir Capacity3.4 L
Cap Operating Pressure (Reservoir Tank Pressure Cap)1.4 bar
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb-FtLb-In
Coolant Drain Plug3022--
Engine Hanger Bracket and Coolant Outlet
Port Bolt22.5 -- 27.516.6 -- 20.3--
Thermostat Cover Bracket Bolt9--11--80 -- 97
Oil Cooler Pipe Line Bolt9--11--80 -- 97
Cooling Fan Bolt9--11--80 -- 97
Viscous Clutch40.5 -- 49.529.8 -- 36.5--
Automatic Transmission Fluid Cooler Pipe2015--
Cooling Fan Shroud Bolts3--7--27 -- 62
Water Pump Pulley Retaining Bolts9--11--80 -- 97
Water Pump Housing BoltsM69--11--80 -- 97pg
M822.5 -- 27.516.6 -- 20.3--
Radiator Bracket Mounting Bolts3--7--27 -- 62
Page 400 of 2053
M161 ENGINE COOLING 1D2 -- 5
D AEW OO M Y_2000
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 re-
move the cap.
Notice:For the risk of scalding, the cap must not be
opened unless the coolant temperature is below 90°C.
2. Loosen the radiator lower drain cock and drain the
coolant.
Notice:Collect the 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
DJust loosen the drain plug to drain the coolant and do
not remove the plug completely.
DCollect the coolant by using the proper container.
Page 405 of 2053
1D2 -- 10 M161 ENGINE COOLING
D AEW OO M Y_2000
Tools Required
124589152100 Tester
Removal & Installation Procedure
1. Drain the coolant.
2. Disconnect the coolant hoses (8, 9, 10).
3. Take off the drive belt.
4. Unscrew the four bolts (6) from water pump pulley
and remove the pulley (7).
Installation Notice
Tightening Torque
9--11NSm (80 -- 97 lb-in)
Notice:Hold the pulley with fan clutch holder 603 589
00 40 00 while removing the pulley.
5. Unscrew the bolts (1, 2, 3, 4) from water pump hous-
ing (5) and remove the water pump.
Installation Notice
Tightening
(1,2,3)9--11NSm
(80 -- 97 lb-in)
Tightening
Torque(4)22.5 -- 27.5 NSm
(16.6 -- 20.3 lb-ft)
6. Clean the sealing surface.
7. Replace the gasket with new one.
Notice:Apply the sealant when the sealing surface of
water pump housing and coolant mounting area is clean.
8. Installation should follow the removal procedure in
the reverse order.
9. Check for leaks by starting the engine.
Page 406 of 2053
M161 ENGINE COOLING 1D2 -- 11
D AEW OO M Y_2000
THERMOSTAT
1 Bolt (M6 X 25, 3 pieces)
9--11 NSm (80-- 97 lb-in) .....................
2 Thermostat Cover
3 De-- aeration Hose4 Coolant Outlet Hose
5 Thermostat
6O--ring
Removal & Installation Procedure
1. Drain the coolant from the radiator.
2. Loosen the hose mounting clip and remove the cool-
ant hose (3, 4).
3. Unscrew the three bolts (1) and remove the thermo-
stat cover assembly from thermostat housing.
Installation Notice
Tightening Torque
9--11NSm (80 -- 97 lb-in)
Do not separate the thermostat cover and thermo-
stat.
4. Replace the O -- ring if necessary.
5. Check the leakage in the cooling system.
Page 408 of 2053
M161 ENGINE COOLING 1D2 -- 13
D AEW OO M Y_2000
Removal & Installation Procedure
1. Drain the coolant.
2. Remove the de-- aeration hose (4), coolant outlet
hose (5) and coolant bypass hose (6).
3. Disconnect the coolant temperature sensor connec-
tor.
4. Unscrew the bolt (1c) and pry off the tensioning de-
vice shock absorber (7).
Installation Notice
Tightening Torque
22.5 -- 27.5 NSm
(16.6 -- 20.3 lb-ft)
5. Unscrow the bolts (1a, 1b) and remove the engine
hanger bracket and thermostat housing.
Installation Notice
Tightening
(1a)9--11NSm
(80 -- 97 lb-in)
Tightening
Torque(1b)22.5 -- 27.5 NSm
(16.6 -- 20.3 lb-ft)
6. Replace the O -- ring with new one.
7. Installation should follow the removal procedure in
the reverse order.
8. Check for leaks in cooling system.