Draining/filling, Temperature Sensor - Removal & Installation (Xc): Other Volvo V70 II

Vacuum pumping

Let the vacuum pumping continue for at least 50 minutes.

Amount of coolant in the A/C system

The amount of coolant which is held in the A/C system is stated on a specification decal on the cross member in the engine compartment.

Filling and leak-finding is done via a service valve on the front.

Note. Also do a complete leak check using a leak detector on the connections of components which have been replaced.

Removing the temperature sensor

Remove the cap from the expansion tank.

Raise the car. Remove the lower splashguard.

Position a container under the engine drain cock. Drain the engine coolant.

Close the cock.

Install the lower splash guard.

Lower the car.

Scheme 316

Remove the screw holding the engine stabilizer brace to the bracket on the engine.

Undo the clamp holding the return hose for the power steering.

Remove the cross stay.

Scheme 317

Remove the crankcase ventilation pipe from the intake manifold. Start with the cover.

Remove the plastic hoses between the turbocharger (TC) and the charge air cooler and between the air cleaner (ACL) and the turbocharger (TC).

Remove the clamp for the intake manifold at the turbocharger (TC) for cylinders 1, 2 and 3. Detach the upper section of the pipe by turning it towards the firewall.

Scheme 318

Remove

1. the upper timing belt cover. Lift up the servo reservoir and place it on top of the engine. WARNING: Seal the cover for the servo reservoir. Check that no oil leaks out. Servo oil is highly inflammable.
2. the screw for the front timing belt cover. See «Removing the front timing cover»(ref-451846-S04022859562012020900000)
3. the timing belt cover. Disconnect the connector for the sensor cable.

Remove the variable valve timing solenoids and place them to one side.

Remove the screw for the cable duct.

Scheme 319

Remove the thermostat housing with the cable duct.

Clean the mating surfaces of the cylinder block. Ensure that no dirt enters the fluid ducts.

Scheme 320

Secure the thermostat housing in a vise. Remove the sensor.

Note. Handle the thermostat housing carefully when securing it in the vise.

Installing the temperature sensor

Note. For tightening torques, see Tightening torque .

Clean the thermostat housing mating surfaces. Ensure that there is no dirt left in the thermostat housing.

Install

1. the new sensor. Use a new gasket . Tighten to 20 Nm . Ensure that the sensor cable is correctly routed in the thermostat housing and in the cable duct
2. the thermostat housing using a new gasket. Tighten to 17 Nm
3. the screw for the cable duct. Tighten to 10 Nm
4. the variable valve timing solenoids. Tighten to 10 Nm
5. the front timing belt cover. See «Installing the front timing cover»(ref-451846-S13131977262012020900000) . The mudguard over the right drive shaft boot may come loose. If this happens, secure it from underneath
6. the screw for the front timing belt cover. Tighten to 12 Nm
7. the servo reservoir. Check that the hoses are correctly positioned
8. the upper timing belt cover.

Install the plastic hoses between the turbocharger (TC) and the charge air cooler and between the air cleaner (ACL) and the turbocharger (TC).

Install the crankcase ventilation pipe on the intake manifold.

Tighten all hose clamps.

Install

1. the engine stabilizer brace. Tighten to 50 Nm
2. the torque rod on the bracket on the engine. Tighten to 80 Nm
3. the clamp holding the return hose for the power steering.