Coolant change C5 V6 petrol?

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Harlequin
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Coolant change C5 V6 petrol?

Post by Harlequin » 30 Jun 2019, 13:53

Heya, how do I drain all the coolant from the system on a mk1 (2005) C5 V6 petrol? removing the water pump yielded about 1/2 a bucket

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GiveMeABreak
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Re: Coolant change C5 V6 petrol?

Post by GiveMeABreak » 30 Jun 2019, 14:48

The procedure is identical to this one I have already posted for a C4, illustrated, so will save me retyping it up. It includes the de-gassing procedure:

viewtopic.php?f=3&t=61536&hilit=Blank+t ... od#p595421

Harlequin
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Re: Coolant change C5 V6 petrol?

Post by Harlequin » 30 Jun 2019, 15:06

CHeers boss - got out as much as possible (there is no bottom hose on the V6), so will follow the process for refill once the new pump etc is on!

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GiveMeABreak
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Re: Coolant change C5 V6 petrol?

Post by GiveMeABreak » 30 Jun 2019, 15:26

I think they kept the same procedure - so in your case it would probably be the bottom 2.

Anyway, some other info on the V6 cooling system in case you need it:

Click to Zoom Diagram
C5 V6 Cooling.PNG
Key

(1) heater matrix.
(2) Bubble trap.
(3) thermostat.
(4) Coolant outlet housing .
(5) Coolant inlet housing.
(6) Engine cooling radiator .
(7) Header tank.
(8) bleed screw(s) .
(9) Oil / water heat exchanger (automatic gearbox).
(10) Temperature sensor .
(11) temperature switch.
Data
DesignationValues
Total capacity of circuit14 litres
Radiator surface area27 dm2
Pressurisation1,4 bar
Opening of thermostatic regulator78 °C
Fan
DesignationValues
Number x Electric power1 x 500 W
1st gearFRIC function
2nd speed105 °C
Warning118 °C
Post-cooling6 minutes

Reference1011
sensorTemperature sensortemperature switch
InformationCoolant temperature: WarningCoolant temperature: Gauge
Connector colourBrownBlue
Tightening torque1,7 ± 0,4 daNm1,7 ± 0,4 daNm

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Stickyfinger
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Re: Coolant change C5 V6 petrol?

Post by Stickyfinger » 30 Jun 2019, 17:17

And....pay very careful attention to the refill procedure, there is a bleed screw on the water flow manifold (outlets on the side of the engine....8) and one leading to the heater matrix (also 8) ...this is "LIKE" a tyre valve...it is NOT the same and has a seal inside as well as being deeper. (easy to drop as well) I have replaced mine with a metal truck valve cap that is fitted with a seal.

Harlequin
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Re: Coolant change C5 V6 petrol?

Post by Harlequin » 30 Jun 2019, 21:16

All done and bled!