Page 459 of 1574
1D1-8 M162 ENGINE COOLING WATER PUMP Preceding Work : Removal of V-beltRemoval of air admission housing
1 Air Admission Housing
2 Oil Cooler Pipe Line
3 Seal....................................................... Replace
4 Bolt ........................................................ 9-11 Nm
5 Coolant Hose
6 Coolant Hose
7 Outlet Coolant Hose 8 Coolant Hose
9 Inlet Coolant Hose
10 Coolant Pump
11 Bolt ........................................................... 21 Nm
12 Dowel Sleeve
13 Seal ....................................................... Replace
Page 477 of 1574
1D2-10 M161 ENGINE COOLING
Tools Required
124 589 15 21 00 Tester Removal & Installation Procedure
1. Drain the coolant.
2. Disconnect the coolant hoses (8, 9, 10).
3. Tak off the drive belt.
4. Unscrew the four bolts (6) from coolant pump pulley andremove the pulley (7).Installation Notice
Tightening Torque 9 - 11 Nm
22.5 - 27.5 Nm
(1, 2, 3)
(4)
Notice Hold the pulley with special tool (603 589 00 40 00) while
removing the pulley.
Tightening Torque 9 - 11 Nm
5. Unscrew the bolts (1, 2, 3, 4) from coolant pump housing (5) and remove the coolant pump. Installation Notice
6. Clean the sealing surface.
7. Replace the gasket with new one. NoticeApply the sealant when the sealing surface of coolant 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 484 of 1574

SECTION 1D3
OM600 ENGINE COOLING
Specifications . . . . . . . . . . . . . . . . . . . . . . . 1D3-1General 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
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 otherwisenoted.
Application
Coolant
Mixing Ratio (Water : anticorrosion) Capacity
Description
ALUTEC P- 78 50 : 50
10.5L - 11L 9.5L - 10L
SPECIFICATIONS
GENERAL SPECIFICATIONS
Application
Coolant Pump Bolt Belt Pulley BoltCoolant Pump Housing Return Pipe BoltThermostat Bolt Cooling Fan Clutch Socket Bolt (Center) Cooling Fan Clutch Socket Bolt (Side)Radiator BoltCoolant Sub-tank BoltN
m
10 101010 45 10
3 - 73 - 7
FASTENER TIGHTENING SPECIFICATIONS
662LA 661LA
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1D3-6 OM600 ENGINE COOLING COOLANT PUMP
Preceding Work : Removal of cooling fanRemoval of V-belt
1 Tensioning Lever
2 Gasket ................................................... Replace
3 Bolt........................................................... 10 Nm 4 Belt Pulley
5 Bolt
........................................................... 10 Nm
6 Coolant Pump
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1D3-10 OM600 ENGINE COOLING COOLING FAN CLUTCH
1 Belt Pulley
2 Cooling Fan Clutch
3 Cooling Fan4 Socket Bolt
................................................ 45 Nm
5 Socket Bolt ................................................ 10 Nm
Tools Required 603 589 00 40 00 Counter Holder
Page 504 of 1574
1E1-4 M162 ENGINE ELECTRICALMAINTENANCE AND REPAIR
ON-VEHICLE SERVICE
ALTERNATOR Preceding Work : Removal of the drivebelt Removal & Installation Procedure
1. Disconnect the negative battery terminal.
2. Unscrew the nut and disconnect the terminal (1). Installation Notice
1 Terminal (B+)
2 Terminal (D+)
3 Combination Bolt
4 Alternator
3. Unscrew the nut and disconnect the terminal (2).Installation Notice
Tightening Torque 14 - 18 Nm
4. Unscrew the combination bolt (3). Installation Notice
Tightening Torque 4 - 5 Nm
5. Remove the alternator.
6. Installation should follow the removal procedure in the reverse order.
Tightening Torque 42 - 50 Nm
Page 516 of 1574
1E2-4 M161 ENGINE ELECTRICALMAINTENANCE AND REPAIR
ON-VEHICLE SERVICE
ALTERNATOR Preceding Work : Removal of the drivebelt Removal & Installation Procedure
1. Disconnect the negative battery terminal.
2. Unscrew the nut and disconnect the terminal (1). Installation Notice
1 Terminal (B+)
2 Terminal (D+)
3 Combination Bolt
4 Alternator
3. Unscrew the nut and disconnect the terminal (2).Installation Notice
Tightening Torque 14 - 18 Nm
4. Unscrew the combination bolt (3). Installation Notice
Tightening Torque 4 - 5 Nm
5. Remove the alternator.
6. Installation should follow the removal procedure in the reverse order.
Tightening Torque 42 - 50 Nm
Page 530 of 1574
1E3-6 OM600 ENGINE ELECTRICAL
ALTERNATOR Preceding Work : Removal of poly V-belt
1 Cooling Fan
2 Bolt............................................................ 45Nm
3 Bolt ............................................................ 45Nm4 Alternator
5 Plug Connection