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REMOVAL AND INSTALLATION
 
 
Pre-removal and Post-installation Operation
  • Engine Coolant Draining and Refilling (Refer to ).
  • Motor Coolant Draining and Refilling (Refer to GROUP 14B - Motor Coolant Change ).
  • Power Drive Unit Removal and Installation [Refer to GROUP 54Db - Inverter <Front> ].
  • Air Cleaner Assembly Removal and Installation (Refer to GROUP 15 - Air Cleaner ).
  • Thermostat Removal and Installation (Refer to ).
Removal steps
1.Vacuum pipe and hose assembly connection
<<A>>>>C<<2.Hose clip
<<A>>>>C<<3.Radiator upper hose connection
4.EGR valve pipe
5.EGR pipe gasket
6.Water outlet fitting
7.Water outlet fitting gasket
•Control wiring harness connection
<<B>>>>B<<8.Engine coolant temperature sensor
9.Water hose
10.Water hose
11.Heater hose connection
12.Harness bracket
13.Water hose
>>A<<14.Thermostat housing
15.Thermostat housing gasket
•Water pump drive belt (Refer to GROUP 11A - Crankshaft Pulley ).
•Water pump (Refer to ).
>>A<<16.Water pipe assembly
>>A<<17.O-ring
18.Water pipe gasket
    Required Special Tool:
  • MB992042: Water Temperature Sensor Wrench
 
 
REMOVAL SERVICE POINTS
 
 
<<A>> HOSE CLIP/RADIATOR HOSE DISCONNECTION
1. Make mating marks on the radiator hose and the hose clip as shown to install them in the original position.
2. Break off the tip of hose clip claw and spread out the hose clip, then disconnect the radiator hose.
noteIf there is a hose clip claw, the hose clip cannot spread to capacity because the claw contacts the hose clip.
 

 
 
<<B>> ENGINE COOLANT TEMPERATURE SENSOR REMOVAL
Use special tool MB992042 to remove the engine coolant temperature sensor.
 
 
 
 
INSTALLATION SERVICE POINTS
 
 
>>A<< O-RING/WATER PIPE ASSEMBLY/THERMOSTAT HOUSING INSTALLATION
1.
cautionAvoid adhesion of engine oil or grease to the O-ring.
Fit the O-ring in the water pipe groove, wet the O-ring circumference or the pipe mounting area inner wall, and then insert the O-ring.
2. Assemble the thermostat housing and water pipe, and temporarily tighten them to the cylinder head and water pump. Then tighten them to the specified torque.
Tightening torque: 24 ± 3 N·m (18 ± 2 ft-lb)
 

 
 
>>B<< ENGINE COOLANT TEMPERATURE SENSOR INSTALLATION
1. Apply the specified sealant to the engine coolant temperature sensor thread.
Specified sealant: ThreeBond 1324N or equivalent
noteInstall the engine coolant temperature sensor immediately after applying sealant.

2.
cautionAfter the installation, until a sufficient period of time (one hour or more) elapses, do not apply the engine oil or water to the sealant application area or start the engine.
Use special tool MB992042 to tighten the engine coolant temperature sensor to the specified torque.
Tightening torque: 30 ± 9 N·m (22 ± 6 ft-lb)
 

 
 
>>C<< RADIATOR HOSE/HOSE CLIP CONNECTION
1.
cautionNever reuse the hose clip whose claw is broken off to prevent the rusting.
Make mating mark on a new hose clip in the same position as the remove one.
2. Insert the radiator hose until the protrusion of the pipe.
3. Align the mating marks on the hose and hose clip.
4. Remove the hose clip claw and shorten the hose clip, then install the hose.