2009 LAMBORGHINI MURCIÉLAGO Service Repair Manual

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CircuitForced circulation with thermostatic control
Radiators Two with fan
Fans • on 80 °C
• off 74 °C
Circuit pressure with hot engine (max.) 1.2 [bars]
Thermostatic valve • Opening start 75r 2 °C
CAUTION!
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80-90mm
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1. Unscrew radiator expansion tank plug.
2. Make sure that the engine coolant level matches the mark visible through the plug. If necessary, top up with the
prescribed coolant.
3. Tighten radiator expansion tank plug.
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The thermostatic valve disassembly/assembly is possible when the power train is on board; in that case,
protect the parts under the thermostat by means of a cloth and position a container under the vehicle to
collect the coolant.
3UHOLPLQDU\RSHUDWLRQV• Proceed by draining the water cooling system (012107).
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1. Remove the 2 screws ( A-Fig.1) with washers which lock the thermostat ( B-Fig.1)on to the water pump ( C-
Fig.1 ).
2. Remove the 4 screws ( D-Fig.1) and remove the cover.
3. Take the thermostatic valve ( E-Fig.2) out.

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1. Fit the thermostatic valve ( $)LJ).
2. Tighten the thermostat cover screwing the 4 screws ( %)LJ).
3. Screw the 2 screws ( &)LJ) with washers which mount the thermostat ( ')LJ) to the water pump ( (
Fig.2 ).
• 3URFHHGE\¿OOLQJ the water cooling system (012106).

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The water cooling system bleeding
1. Unscrew and remove the cap ( $)LJ)
2. Top up the reservoir ( %)LJ) to the level mark.
3. Start the vehicle and bring the water temperature to 90/95°C (thermostatic valve completely open).
4. Because the system is fully circulating, all of the air is conveyed into the reservoir ( %)LJ) and exits the mouth
that was purposely left open.

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Bleeding can last from 15 to 60 minutes.
5. After bleeding, screw the cap on again ( $)LJ).

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Replacing the engine coolant
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1. Place a container under the vehicle in order to collect all the engine coolant.
2. Open the radiator expansion tank plug.
3. Disconnect water pump inlet and outlet hoses and allow the coolant to drain out.
4. Unscrew the taps placed under the radiators and accessible when the rear aprons are removed in order to
empty the rear radiators.
5. Connect all the removed parts, close the open taps; top up with the prescribed coolant through the radiator
expansion tank plug.
   &RRODQW    6. Start the engine and run it at idle speed for some minutes leaving the radiator expansion tank plug open;
stop the engine and check the coolant level through the radiator expansion tank plug; top up with coolant if
necessary.
7. Then tighten the radiator expansion tank plug.

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The water pump disassembly/assembly is possible when the power train is on board; in that case, protect the parts under the pump by means of a cloth and position a container under the vehicle to collect thecoolant.
3UHOLPLQDU\RSHUDWLRQV • Disassemble the silencer safety grid (025103).
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1. Remove the delivery ( A-Fig.1) and intake pipe mounting clamps on the water pump and remove the pipes ( B-
Fig.1 ).
2.
Remove the rear cross member, unscrewing the 4 screws( C-Fig.2 )of the two inner sides.
3. Remove the auxiliary belt (010103).
4. Remove the 2 screws ( D-Fig.3) that connect the water pump and the power steering pump.

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5.
Unscrew the 4 screws ( ()LJ) that secure the power steering pump support frame ( F-Fig.4), A/C compressor
and alternator.
 127(
Drain the air conditioning system (026008).
6. Remove the 4 upper screws ( G-Fig.5) and the 2 lower screws ( H-Fig.5) that secure the thermostatic valve
cover.
7. Remove the 3 nuts ( I-Fig.6) that secure the water pump to the timing system cover.
8. Remove the water pump.