Removal and installation the water hose and water pipe (Mitsubishi Outlander 1)

Operations to be performed before removing and after installing the valve

Drain and refill the coolant.

Remove (install) the air filter.

Remove (install) the thermostat.

Sequence of component removal

Disconnect the upper radiator hose.

Remove the coolant drain pipe.

Disconnect the throttle body heating return hose.

Disconnect the throttle body heater hose.

Remove the thermostat housing.

Disconnect the heater hose.

Disconnect the wiring harness clamp.

Remove the water pipe.

Remove the rubber sealing ring from the water pipe.

Disconnecting the upper radiator hose

Mark the mating marks on the upper radiator hose and on the clamp. Then disconnect the upper radiator hose.

Installing the rubber sealing ring of the water pipe

Caution! Do not allow oils to come into contact with the surface of the rubber sealing ring. Insert the rubber sealing ring into the groove on the water pipe. Wet the surface of the rubber ring with water or coolant.

Installing the thermostat housing/outlet pipe

Use a scraper or wire brush to remove any remaining old sealant from the sealing joint.

Apply a narrow bead of sealant to the joint.

Sealant name: MITSUBISHI genuine sealant, part number MD970389 or equivalent.

Within 15 minutes after applying the sealant (the sealant should not have time to polymerize), install the thermostat housing or the outlet pipe on the engine. Do not apply an excessive amount of sealant to the joint.

Connecting the Upper Radiator Hose

Place the upper radiator hose until it rests against the ledge on the outlet pipe.



Align the mating marks on the upper radiator hose and clamp.

Tighten the clamp.

Checking the water pipe and throttle body heating hoses

After removal, check the water pipe and heating hoses for cracks, damage and blockages.

Replace faulty components if necessary.