iduck Posted October 21, 2015 Posted October 21, 2015 Hi, I have a 2005 Citroen C3 1.4 petrol automatic, I am thinking about flushing the brake system. I just wonder if 1 litre of brake fluid is enough to do the job, I could not find the amount needed in Haynes Manual. I don't want to buy too much in case of wastage, because some articles say it would absorb moisture in time even in the container, is it true? Quote
paul.h Posted October 21, 2015 Posted October 21, 2015 1 litre of fluid will be enough. First suck the old fluid out of the reservoir before filling it up with new fluid, then provided you have not got air in the system from disconnecting a caliper/pipe/hose/etc, it really does not matter which wheel is bled first. Front calipers may need about 250 ml each bleeding through to clear the old fluid and the rear cylinders about 100 ml each. Then you need to do the clutch (depending on what type of automatic you have), I have found the best way to do this is to suck the fluid out of the slave cylinder bleed screw (it will need undoing quite a bit for the fluid to flow, a lot more than a brake bleed screw) but keep an eye on the fluid level in the reservoir so you do not end up with too low a level so air is sucked through. Provided the new fluid container is kept sealed the fluid should last and it is probably better kept inside the house. However, you will probably only have about 100 to 200 ml left after the job so if you need to change the fluid again you will still need to buy another litre. Check the date on the fluid you buy, most of them have a foil seal under the cap but not always so the caps must be able to provide a good seal against moisture and they do not have a hole in them like on the car reservoir cap to let air in and out. Quote
iduck Posted October 22, 2015 Author Posted October 22, 2015 Hi Paul, thank you for the detailed information which is very helpful. But the thing is I don't know where the clutch slave cylinder is on my car, it's Citroen C3 1.4 sx automatic petrol. I can only see the master cylinder under the bonnet. Please show me where it is. Thanks. Quote
paul.h Posted October 22, 2015 Posted October 22, 2015 If it is the AL4 gearbox you will not have a slave cylinder but on cars that do have them it is at the front of the gearbox. Quote
iduck Posted October 22, 2015 Author Posted October 22, 2015 Thanks a lot, Paul, I shall have a look tomorrow and see if I have a slave cylinder. Thanks again. Quote
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