Removal and Installation

REMOVAL AND INSTALLATION [3.0L ENGINE]













Required Special Tools:

- MB992042: Water Temperature Sensor Wrench

- MD998412: Guide

REMOVAL SERVICE POINTS

[[A]] HOSE CLIP/RADIATOR UPPER HOSE DISCONNECTION





1. Make mating marks on the radiator upper hose and the hose clamp. Disconnect the radiator upper hose.





2. Break off the tip of hose clip claw and spread out the hose clip.
NOTE:
If there is a hose clip claw, the hose clip cannot spread to capacity because the claw contacts the hose clip.

3. Disconnect the radiator upper hose.

[[B]] ENGINE COOLANT TEMPERATURE SENSOR REMOVAL





Use special tool MB992042 to remove the engine coolant temperature sensor.

[[C]] THERMOSTAT HOUSING REMOVAL





Remove the two control wiring harness clamps, and remove the thermostat housing.

INSTALLATION SERVICE POINTS

]]A[[
O-RING INSTALLATION

CAUTION:
Do not allow engine oil or other grease to adhere to the O-ring





Insert the O-ring to the water inlet pipe, and coat the outer portion of the O-ring with water or engine coolant.

]]B[[
GASKET/THERMOSTAT HOUSING INSTALLATION





Using the special tool MD998412, install the thermostat housing while supporting the gasket.

]]C[[
ENGINE COOLANT TEMPERATURE SENSOR INSTALLATION





1. Apply the specified sealant to the thread of the engine coolant temperature sensor.
Specified Sealant: ThreeBond 1324N or equivalent
NOTE:
Install the engine coolant temperature sensor immediately after applying sealant.





2.
CAUTION:
After the installation, until a sufficient period of time (one hour or more) elapses, do not apply the 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 Nm (22 ± 7 ft-lb)

]]D[[
HOSE CLIP/RADIATOR UPPER HOSE INSTALLATION

1.
CAUTION:
Never 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 thermostat housing.
3. Align the mating marks on the radiator hose and hose clamp, and then connect the radiator hose.
4. Remove the hose clip claw to tighten the radiator hose.