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Alfa Romeo 159 Factory Service Manual (2005-2011)08 · Engine
08 · Engine

Thermostat- r + r

Make
Alfa Romeo
Model
159 Factory Service Manual
Year
2005–2011
Section
Engine cooling › Thermostat- r + r
EngineThermostat- r + r

THERMOSTAT- R + R

Operation 1088C40 · WATER PUMP AND THERMOSTAT

1.9 JTS, 2.2 JTS

Removing

- Position the vehicle on a lift.

1. Undo the coolant drain plug in the water pump and drain the coolant.

Collect the coolant in a suitable container.

THERMOSTAT- R + R

1. Loosen the collar and disconnect the upper coolant input sleeve to the radiator, thermostat side.

2. Undo the bolts (2a) and remove the thermostat cover (2b).

3. Remove thermostat (3a) and sealing ring (3b).

THERMOSTAT- R + R

Refitting

1. Clean the sealing surfaces, then fit the thermostat (1a) with a new sealing ring (1b).

Spread the sealing ring with silicone grease (white).

2. Place the thermostat cover (2a) in its housing and secure it by tightening the bolts (2b) to the recommended torque.

ComponentFasteningdiaValue (daNm)Validity
Thermostat unit coverBoltM6(thermostat unit side) 0.8

1.9 JTS

2.2 JTS

3. Connect the upper coolant input sleeve to the radiator, thermostat side, and tighten the band.

THERMOSTAT- R + R

1. Tighten the coolant drain plug to the water pump to the recommended torque.

Apply sealant to the plug before fitting it.

ComponentFasteningdiaValue (daNm)Validity
Drain plug on water pumpM20(water pump side) 2.0

1.9 JTS

2.2 JTS

THERMOSTAT- R + R

Op. 0010T20 ENGINE COOLANT - CHANGE

- Remove the vehicle from the lift.

1.9 JTD 8V, 1.9 JTD 16V, 2.4 JTD 20V

Removing

- Position the vehicle on a lift.

Op. 1016A10 SOUND-PROOFING COVER - R.R

Op. 5530B10 BATTERY - R+R

Op. 5530B52 BATTERY SUPPORT/DRIP TRAY - R.R

Op. 7055B54 UNDER ENGINE PROTECTION/GUARD - R.R.

Op. 1048B22 AIR SUPPLY HOSE FROM HEAT EXCHANGER TO INTAKE MANIFOLD - R + R

1. Undo the radiator coolant drain plug.

Collect the coolant in a suitable container.

THERMOSTAT- R + R

1. Loosen the collar and disconnect the upper coolant input sleeve to the radiator, thermostat side.

2. Undo the nut fixing the coolant return pipe from the engine oil heat exchanger.

3. Loosen the collar and disconnect the coolant delivery pipe to the climate control system heater, thermostat side.

4. Loosen the band and disconnect the coolant supply pipe to the engine oil heat exchanger, thermostat side.

5. Disconnect the electrical connection from the engine coolant temperature sensor.

DescriptionConnector
5Engine coolant temperature sensor/sender unitSee K036 ENGINE COOLANT TEMPERATURE SENSOR/SENDER UNIT
THERMOSTAT- R + R

1. Disconnect the vacuum intake pipe faston connector from the vacuum pump.

2. Loosen the band and disconnect the engine oil vapour recovery pipe from the engine oil filler.

3. Loosen the band and disconnect the flexible pipe from the rigid coolant return pipe to the engine coolant reservoir.

THERMOSTAT- R + R

1. Undo the bolts (1a) and remove the thermostat (1b) complete with O-ring (1c).

THERMOSTAT- R + R

Refitting

1. Place the thermostat (1a) in its housing with the O-ring (1b) and secure it by tightening the bolts (1c) to the recommended torque.

ComponentFasteningdiaValue (daNm)Validity
ThermostatBoltM8(cylinder head side) 2.5

1.9 JTD 16V

2.4 JTD 20V

THERMOSTAT- R + R

- Connect the flexible pipe to the rigid coolant return pipe to the engine coolant reservoir and tighten the band.

- Connect the engine oil vapour recovery pipe to the engine oil filler and tighten the band.

- Connect the vacuum intake pipe faston connector to the vacuum pump.

- Connect the electrical connection to the engine coolant temperature sensor.

- Connect the coolant supply pipe to the engine oil heat exchanger, thermostat side, and tighten the band.

- Connect the coolant delivery pipe to the climate control system heater, thermostat side, and tighten the band.

- Tighten the nut fixing the coolant return pipe to the engine oil heat exchanger.

- Connect the radiator upper coolant inlet hose, thermostat side, and tighten the band.

- Tighten the coolant drain plug to the radiator.

Op. 1048B22 AIR SUPPLY HOSE FROM HEAT EXCHANGER TO INTAKE MANIFOLD - R + R

Op. 5530B52 BATTERY SUPPORT/DRIP TRAY - R.R

Op. 5530B10 BATTERY - R+R

Op. 0010T20 ENGINE COOLANT - CHANGE

Op. 7055B54 UNDER ENGINE PROTECTION/GUARD - R.R.

Op. 1016A10 SOUND-PROOFING COVER - R.R

- Remove the vehicle from the lift.

3.2 JTS

Removing

Op. 0010T20 ENGINE COOLANT - CHANGE

1. Undo the bolt (1a) fixing the bracket (1b) for the three-way connector between the radiator and the thermostat (1c).

THERMOSTAT- R + R

1. Undo the bolt (1a) fixing the three-way connector between the radiator and the thermostat (1b) and disconnect it from the thermostat.

- Remove the O-ring from the three-way connector between the radiator and the thermostat.

THERMOSTAT- R + R

1. Undo the bolts (1a) and remove the thermostat (1b) from its housing and from the heater rigid water supply pipe (1c).

- Remove the gasket.

THERMOSTAT- R + R

Refitting

- Place the thermostat complete with a new gasket back in its housing and tighten the bolts to the recommended torque.

ComponentFasteningdiaValue (daNm)Validity
ThermostatBolt1.03.2 JTS

- Connect the three-way connector between the radiator and the thermostat to the thermostat complete with a new O-ring and secure it using the bolt.

- Tighten the bolt fixing the bracket for the three-way connector between the radiator and the thermostat.

Op. 0010T20 ENGINE COOLANT - CHANGE

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