Workshop Manuals Factory service & repair Alfa Romeo
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Axles and driveshafts12 Brakes13 Steering14 Suspension and wheels15 Heating, air conditioning and auxiliary units16 Electrical equipment17 Body fittings18 Body panels and frame19 Wiring diagrams and electrical functions20 Wiring harnesses21 Connectors and pin-outs22 Fault diagnosis23 Special tools
Alfa Romeo 147 Factory Service Manual (2000-2004)08 · Engine
08 · Engine

Thermostat- r + r

Make
Alfa Romeo
Model
147 Factory Service Manual
Year
2000–2004
Section
Engine cooling › Thermostat- r + r
EngineThermostat- r + r

Thermostat- r + r

Operation 1088C40 · Water pump and thermostat

1.6 TS · 103 CV

Removing

Position the vehicle on the ramp.

Ensure that the ignition key is in the OFF postition, then disconnect the battery negative terminal.

NameConnector
BatteryA1B

1. Disconnect the lower coolant outlet hose from the radiator and drain the engine coolant.

Manually press the springs and remove the hose's rapid attachment.

Recover the coolant using a suitable container.

Thermostat- r + r

1. Disconnect the electrical connection from the air flow meter.

NameConnector
1Air flow meterK41

Disconnect the electrical wiring for the flow meter from the fastening on the air intake sleeve.

2. Disconnect the oil vapour recirculation pipe from the air intake duct.

3. Undo the bolts (3a) and remove the air intake hose (3b) complete with air flow meter (3c).

Thermostat- r + r

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

NameConnector
1Engine temperature sender unitK36

2. Disconnect the coolant return pipe to the climate control heater, thermostat side.

3. Disconnect the coolant return pipe to the engine coolant reservoir, thermostat side.

4. Disconnect the upper coolant inlet hose to the radiator, thermostat side.

5. Undo the bolts (5a) and remove the thermostat (5b) complete with gasket.

Thermostat- r + r

Refitting

Place the thermostat, complete with gasket, back in its housing and fix it tightening the bolts to the recommended torque.

FasteningComponentØ

Value

(daNm)

BoltTHERMOSTATM8(Cylinder head side) 2.3 ÷ 2.8

Connect the upper coolant inlet hose to the radiator, thermostat side.

Connect the coolant return pipe to the engine coolant reservoir, thermostat side.

Connect the coolant supply pipe to the climate control heater, thermostat side.

Connect the electrical connection to the engine coolant temperature sensor.

Refit the air intake hose with air flow meter and secure with collars.

Connect the oil vapour recirculation pipe to the air intake duct.

Connect the electrical connection to the air flow meter and secure the electrical wiring to the fastening on the air intake sleeve.

Connect the lower coolant outlet hose to the radiator.

Connect the battery terminal (-).

Refill the engine cooling system with coolant - 0010T20 coolant change.

Remove the car from the ramp.

1.6 TS · 120 CV

Removing

Position the vehicle on the ramp.

Ensure that the ignition key is in the OFF postition, then disconnect the battery negative terminal.

NameConnector
BatteryA1B

1. Disconnect the lower coolant outlet hose from the radiator and drain the engine coolant.

Manually press the springs and remove the hose's rapid attachment.

Recover the coolant using a suitable container.

Thermostat- r + r

1. Disconnect the electrical connection from the air flow meter.

NameConnector
1Air flow meterK41

Disconnect the electrical wiring for the flow meter from the fastening on the air intake sleeve.

2. Disconnect the oil vapour recirculation pipe from the air intake duct.

3. Undo the bolts (3a) and remove the air intake hose (3b) complete with air flow meter (3c).

Thermostat- r + r

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

NameConnector
1Engine temperature sender unitK36

2. Disconnect the coolant return pipe to the climate control heater, thermostat side.

3. Disconnect the coolant return pipe to the engine coolant reservoir, thermostat side.

4. Disconnect the upper coolant inlet hose to the radiator, thermostat side.

5. Disconnect the coolant supply pipe to the engine oil heat exchanger, thermostat side.

6. Undo the bolts (6a) and remove the thermostat (6b) complete with gasket.

Thermostat- r + r

Refitting

Place the thermostat, complete with gasket, back in its housing and fix it tightening the bolts to the recommended torque.

FasteningComponentØ

Value

(daNm)

BoltTHERMOSTATM8(Cylinder head side) 2.3 ÷ 2.8

Connect the coolant supply pipe to the engine oil heat exchanger, thermostat side.

Connect the upper coolant inlet hose to the radiator, thermostat side.

Connect the coolant return pipe to the engine coolant reservoir, thermostat side.

Connect the coolant supply pipe to the climate control heater, thermostat side.

Connect the electrical connection to the engine coolant temperature sensor.

Refit the air intake hose with air flow meter and secure with collars.

Connect the oil vapour recirculation pipe to the air intake duct.

Connect the electrical connection to the air flow meter and secure the electrical wiring to the fastening on the air intake sleeve.

Connect the lower coolant outlet hose to the radiator.

Connect the battery terminal (-).

Refill the engine cooling system with coolant - 0010T20 coolant change.

Remove the car from the ramp.

2.0 TS

Removing

Position the vehicle on the ramp.

Ensure that the ignition key is in the OFF postition, then disconnect the battery negative terminal.

NameConnector
BatteryA1B

Proceed with the removal - 7055B54 under-engine guard - r r.

1. Disconnect the lower coolant outlet hose from the radiator and drain the engine coolant.

Manually press the springs and remove the hose's rapid attachment.

Recover the coolant using a suitable container.

Thermostat- r + r

1. Disconnect the electrical connection from the air flow meter.

NameConnector
1Air flow meterK41

Disconnect the electrical wiring for the flow meter from the fastening on the air intake sleeve.

2. Disconnect the oil vapour recirculation pipe from the air intake duct.

3. Undo the bolts (3a) and remove the air intake hose (3b) complete with air flow meter (3c).

Thermostat- r + r

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

NameConnector
1Engine temperature sender unitK36

2. Disconnect the coolant return pipe to the climate control heater, thermostat side.

3. Disconnect the coolant return pipe to the engine coolant reservoir, thermostat side.

4. Disconnect the upper coolant inlet hose to the radiator, thermostat side.

5. Disconnect the coolant supply pipe to the engine oil heat exchanger, thermostat side.

6. Undo the bolts (6a) and remove the thermostat (6b) complete with gasket.

Thermostat- r + r

Refitting

Place the thermostat, complete with gasket, back in its housing and fix it tightening the bolts to the recommended torque.

FasteningComponentØ

Value

(daNm)

BoltTHERMOSTATM8(Cylinder head side) 2.3 ÷ 2.8

Connect the coolant supply pipe to the engine oil heat exchanger, thermostat side.

Connect the upper coolant inlet hose to the radiator, thermostat side.

Connect the coolant return pipe to the engine coolant reservoir, thermostat side.

Connect the coolant supply pipe to the climate control heater, thermostat side.

Connect the electrical connection to the engine coolant temperature sensor.

Refit the air intake hose with air flow meter and secure with collars.

Connect the oil vapour recirculation pipe to the air intake duct.

Connect the electrical connection to the air flow meter and secure the electrical wiring to the fastening on the air intake sleeve.

Connect the lower coolant outlet hose to the radiator.

Proceed with the refitting - 7055B54 under-engine guard - r r.

Connect the battery terminal (-).

Refill the engine cooling system with coolant - 0010T20 coolant change.

Remove the car from the ramp.

3.2 V6

Removing

Position the vehicle on the ramp.

Proceed with removal - 7055B54 under-engine guard - r r.

1. Press the two rapid attachment clips, by hand, and disconnect the lower coolant outlet hose from the radiator, radiator side.

Recover the coolant using a suitable container.

Connect the rapid attachment for the lower coolant outlet hose to the radiator, radiator side.

Thermostat- r + r

Proceed with removal - 5530B10 battery - r+r.

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

NameConnector
1Engine temperature sender unitK36

2. Open the electrical connections box.

3. Extract the electrical connections and the wiring from the electrical connections box.

Thermostat- r + r

1. Loosen band and disconnect the upper coolant inlet hose to the radiator thermostat side.

2. Loosen the band and disconnect the lower radiator coolant outlet hose from the radiator, thermostat side.

3. Loosen the band and disconnect the coolant supply pipe from the climate control heater, thermostat side.

4. Undo the bolts (4a) and remove the thermostat (4b) complete with electrical connections box (4c).

At the bench, separate the thermostat from the electrical connections box.

Thermostat- r + r

Refitting

Assemble the thermostat and the electrical connections box.

1. Place the thermostat (1a) in its housing complete with electrical connections box (1b) and secure it tightening the bolts (1c) to the recommended torque.

FasteningComponentØ

Value

(daNm)

1cBoltTHERMOSTATM6(Cylinder head side) 0.8 ÷ 1.0

2. Connect the engine coolant return pipe from the climate control system heater, thermostat side, and tighten the band.

3. Connect the lower coolant outlet hose from the radiator, thermostat side, and tighten the band.

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

Thermostat- r + r

Place the electrical connections and the wiring in their housings in the electrical connections box.

Connect the electrical connection to the engine coolant temperature sensor.

Proceed with refitting - 5530B10 battery - r+r.

Refill the engine cooling system with coolant - 0010T20 coolant change.

Proceed with refitting - 7055B54 under-engine guard - r r.

Remove the car from the ramps.

1.9 JTD 16V

Removing

Position the vehicle on the ramp.

Proceed with removal - 7025A12 Engine front sound insulation COVER - R.R..

Proceed with removal - 7025A14 Bonnet LID - R.R..

Proceed with removal - 1016A10 sound-proofing cover - r + r.

Proceed with removal - 5530B10 battery - r+r.

Proceed with removal - 5530B52 Battery DRIP TRAY/SUPPORT - R.R..

Proceed with removal - 7055B54 under-engine guard - r r.

1. Loosen the band and disconnect the coolant return pipe from the engine coolant reservoir, thermostat side.

2. Loosen band and disconnect the upper coolant inlet hose to the radiator thermostat side.

3. Loosen the band and disconnect the coolant return pipe to the climate control heater, thermostat side.

4. Loosen the band and disconnect the coolant supply pipe to the water/exhaust gas heat exchanger for the E.G.R. system, thermostat side.

Recover the coolant which comes out in a suitable container.

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

NameConnector
5Engine temperature sender unitK36
Thermostat- r + r

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

Thermostat- r + r

Refitting

1. Refit thermostat (1a), complete with O-ring (1b) and secure by tightening the bolts (1c) to the recommended torque.

FasteningComponentØ

Value

(daNm)

1c
Thermostat- r + r

Connect the electrical connection to the engine coolant temperature sensor.

Connect the engine coolant supply pipe to the EGR system water/exhaust gas heat exchanger, thermostat side and tighten the band.

Connect the engine coolant return pipe from the climate control system heater, thermostat side, and tighten the band.

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

Connect the engine coolant return pipe to the supply reservoir, thermostat side and tighten the band.

Proceed with refitting - 7055B54 under-engine guard - r r.

Proceed with refitting - 5530B52 Battery DRIP TRAY/SUPPORT - R.R..

Proceed with refitting - 5530B10 battery - r+r.

Refill the engine cooling system with coolant - 0010T20 coolant change.

Proceed with refitting - 1016A10 sound-proofing cover - r + r.

Proceed with refitting - 7025A14 Bonnet LID - R.R..

Proceed with refitting - 7025A12 Engine front sound insulation COVER - R.R..

Remove the car from the ramps.

Parts & tools for this job For 2000 Alfa Romeo 147

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