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Old 18-05-2017   #1
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Smile Grande Punto TJET ABS brake fluid change?

Hey Guys,

Sorry if this is taboo starting new thread, but i feel its not 100% percent covered since i have a tjet.

So i have a 59 plate grnade punto 1.4 tjet sporting. I am lookin gto change the brake fluid soon as it has been awhile and was quite confident, but i stumbled across on youtube about ABS systems are different and cannot be done the traditional one man home made bleeder, but needs to be pressured and also consider remove the abs fuse and relay?

Has anyone change their brake fluid on an ABS GP, or even better has the exact model as mine and done it. are their any pros and cons etc?

Just do not want to mess this job up
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Old 18-05-2017   #2
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Re: Grande Punto TJET ABS brake fluid change?

No real magic.
I do not have a GP but the Bravo is pretty much identical. I have replaced the fluid a few times... also replaced the calipers and the brake pump.. so have done quite a lot of work on the braking system.
I only once needed to use MES to run the ABS pump.. i think i bled the reservoir dry.
1.You first use a syringe to suck up all the fluid in the brake reservoir then add the new one in there. This operation alone does about 40% of the entire fluid.
2.Add new fluid;
3.There are numerous ways of going around the car... does not really matter as long as you get nice clean fluid to each caliper.
4.MAKE sure that your bleed nipples are not rusted stuck. you can easily brake them off.... leading to a new caliper.
5.MAKE sure you have good 6 face/hexagonal wrenches so you do not round-off the bleed nipples.
6.The Bravo uses 2 nipple sizes 8mm and 10mm.


I use a one way check valve and 2 pieces of hose, one in a bottle, one on the bleeder... that way i can bleed the calipers on my own, without any help:
http://photos.motoiq.com/MotoIQ/Proj..._6689adj-M.jpg

Just put the hose over the bleeder.. make sure you put the first hose vertical... so the air moves to the top of the hose... and none goes back to the caliper....a few pumps and all the air and old fluid will be pushed through the check valve.
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Old 18-05-2017   #3
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Re: Grande Punto TJET ABS brake fluid change?

If possible, use a different color brake fluid, that helps to see when the old one gets into your bleeding bottle...
Also go from the farest to the nearest brake when bleeding, with engine off, the ABS -in normal condition- just does nothing .
You MUST use a six faces spanner for the bleeder !!

Regards, Bernie
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Old 19-05-2017   #4
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Re: Grande Punto TJET ABS brake fluid change?

Quote Originally Posted by aurick86 View Post
No real magic.
I do not have a GP but the Bravo is pretty much identical. I have replaced the fluid a few times... also replaced the calipers and the brake pump.. so have done quite a lot of work on the braking system.
I only once needed to use MES to run the ABS pump.. i think i bled the reservoir dry.
1.You first use a syringe to suck up all the fluid in the brake reservoir then add the new one in there. This operation alone does about 40% of the entire fluid.
2.Add new fluid;
3.There are numerous ways of going around the car... does not really matter as long as you get nice clean fluid to each caliper.
4.MAKE sure that your bleed nipples are not rusted stuck. you can easily brake them off.... leading to a new caliper.
5.MAKE sure you have good 6 face/hexagonal wrenches so you do not round-off the bleed nipples.
6.The Bravo uses 2 nipple sizes 8mm and 10mm.


I use a one way check valve and 2 pieces of hose, one in a bottle, one on the bleeder... that way i can bleed the calipers on my own, without any help:
http://photos.motoiq.com/MotoIQ/Proj..._6689adj-M.jpg

Just put the hose over the bleeder.. make sure you put the first hose vertical... so the air moves to the top of the hose... and none goes back to the caliper....a few pumps and all the air and old fluid will be pushed through the check valve.
thanks for all this.

So you have ot had to remove fuses or relays for you ABS etc, as i know how to do a fluid change, but then started hearing things about ABS systems are different etc???
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Old 19-05-2017   #5
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Re: Grande Punto TJET ABS brake fluid change?

Quote Originally Posted by Bernievarian View Post
If possible, use a different color brake fluid, that helps to see when the old one gets into your bleeding bottle...
Also go from the farest to the nearest brake when bleeding, with engine off, the ABS -in normal condition- just does nothing .
You MUST use a six faces spanner for the bleeder !!

Regards, Bernie
ok so does your car ave ABS? and have you canged brake fluid and done it the typical way you expect with no new considerations for ABS being involved
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Old 19-05-2017   #6
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Re: Grande Punto TJET ABS brake fluid change?

Quote Originally Posted by everson38 View Post
thanks for all this.

So you have ot had to remove fuses or relays for you ABS etc, as i know how to do a fluid change, but then started hearing things about ABS systems are different etc???
You don't have to do anything to the ABS system... there might still be a very small amount of fluid inside the abs pump.. but to little to worry about it.
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Old 20-05-2017   #7
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Re: Grande Punto TJET ABS brake fluid change?

As said earlier, when not activated, the ABS does just nothing ! The brake fluid pumped from the master cylinder simply goes thru the ABS internal valves and reach the brakes receiving cylinders thru 4 separate channels.
In case of a wheel blockage, one valve release the pressure on the brake by diverting the corresponding channel to an internal buffer, the buffer is then emptied to the reservoir.

That's a bit more complicated but you got the idea...

Regards, Bernie
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Last edited by Bernievarian; 20-05-2017 at 09:37.
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Old 21-05-2017   #8
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Re: Grande Punto TJET ABS brake fluid change?

Quote Originally Posted by Bernievarian View Post
As said earlier, when not activated, the ABS does just nothing ! The brake fluid pumped from the master cylinder simply goes thru the ABS internal valves and reach the brakes receiving cylinders thru 4 separate channels.
In case of a wheel blockage, one valve release the pressure on the brake by diverting the corresponding channel to an internal buffer, the buffer is then emptied to the reservoir.

That's a bit more complicated but you got the idea...

Regards, Bernie
Thanks again I plan to do these jobs in the next few week. Will let you know how I get on. Are you driving a grande punto ?. Sorry but are the bleed valves same sizes or different.on back?
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Old 22-05-2017   #9
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Re: Grande Punto TJET ABS brake fluid change?

The bleeders have all the same size, to avoid "rounding" them, use a "eyed" spanner, preferably 6 faces if you can find one... size is 8mm but 5/16th will do the job also.

Regards, Bernie.

ps: the other half drives a GP 1.3mjt, and I drive a Passat CC :-D
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Old 29-05-2017   #10
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Re: Grande Punto TJET ABS brake fluid change?

Quote Originally Posted by Bernievarian View Post
The bleeders have all the same size, to avoid "rounding" them, use a "eyed" spanner, preferably 6 faces if you can find one... size is 8mm but 5/16th will do the job also.

Regards, Bernie.

ps: the other half drives a GP 1.3mjt, and I drive a Passat CC :-D
Isn't just me or is it very hard to find a six sided spanner in UK ???
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Old 29-05-2017   #11
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Re: Grande Punto TJET ABS brake fluid change?

It's not you, they're very hard to find, the one I use is actually not a completely eyed spanner, that's the type of tools used by mechanics on injection couplings and hydraulic piping. Alternatively you can unlock the nipple with a 6 faces socket and then proceed with a 12 points eyed wrench...

Regards, Bernie
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Old 29-05-2017   #12
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Re: Grande Punto TJET ABS brake fluid change?

You can use a deep socket .. those are easier to find 6 sided.
Just use it for the initial loosening of the bleeder and the final tightening ( do not over tighten it).
While bleeding you can use a simple 12 sided spanner, but do not over tighten it.
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Old 29-05-2017   #13
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Re: Grande Punto TJET ABS brake fluid change?

Quote Originally Posted by everson38 View Post
Isn't just me or is it very hard to find a six sided spanner in UK ???
Hi,
I take it you mean a hex (6 point) ring spanner? The 12 point (double hex) style is much more common. The reason is that with a hexagonal shape nut or bolt only the points take the load so there is no difference between a 6 and 12 point spanner. In practice a well made, correct size, spanner of either type is OK. There are special spanner designs e.g SnapOn FlankDrive that apply force to the flats rather than the points which are good for tight fastners. There are also special spanners for pipe fittings (flare nuts) e.g. https://www.machinemart.co.uk/p/7-pi...e-spanner-set/ that are ok for bleed nipples.

Robert G8RPI.
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Old 29-05-2017   #14
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Re: Grande Punto TJET ABS brake fluid change?

THIS is the tool you need ;-)
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Old 29-05-2017   #15
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Re: Grande Punto TJET ABS brake fluid change?

Quote Originally Posted by g8rpi View Post
Hi,
I take it you mean a hex (6 point) ring spanner? The 12 point (double hex) style is much more common. The reason is that with a hexagonal shape nut or bolt only the points take the load so there is no difference between a 6 and 12 point spanner. In practice a well made, correct size, spanner of either type is OK. There are special spanner designs e.g SnapOn FlankDrive that apply force to the flats rather than the points which are good for tight fastners. There are also special spanners for pipe fittings (flare nuts) e.g. https://www.machinemart.co.uk/p/7-pi...e-spanner-set/ that are ok for bleed nipples.

Robert G8RPI.
Thanks Rob got a little lesson there. Always good to learn something new lol.
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