Has anyone fitted one before how difficult it is to 

I meant how hard to remove and also how do a remove the filter in side the resevoir  

You again with the brakes!

 

It's not that bad a job, you just need to be careful and use cleanliness when working with hydraulics.

 

Syphon as much fluid as possible from the reservoir to minimise the mess and put cloths underneath area to catch spills.

 

Wiggle the spring clip from the clutch feed hose on the reservoir and disconnect, plugging the end of the hose.

 

As I recall the reservoir needs to be removed from the master cylinder to allow access to the  master cylinder retaining nuts... 26mm or thereabouts/nearest Imperial.

 

To do this you'll probably need to remove a reservoir securing torx bolt which is difficult to access.

 

Once removed you can then wiggle the reservoir up and off from the rubber grommets it sits in. Unscrew the brake lines and plug the ends. Disconnect the brake light switch plug.

 

Now you can unscrew the master cylinder retaining nuts and remove it from the vacuum servo housing.

 

When you put things back together ensure cleanliness and prime master cylinder with clean brake fluid before connecting the lines. With the reservoir filled correctly apply very small and repetitive partial brake pedal strokes to try push brake fluid into the lines whilst allowing air to escape back up without being forced further down the lines.  This doesn't apply to the clutch feed.

As for removing the filter insert, i think it is one of those one way plastic assemblies where removal may result in damage/destruction.

 

I washed my reservoir out with hot soapy water, rinsed well and dried THOROUGHLY with a hair dryer.

Yes unfortunately it is me found problem with brakes wet behind pedal so hey ho.

Never done this before.

But thanks for advice.

What about air in system am worried in case a get air in ABS pump

Edited 8 November, 20178 yr by Taximan1978
Spelling mistake

If you are careful you should be ok as I said when first reassembled press the pedal partially and repeatedly for a few minutes to get the air to purge upwards and out at the master cylinder.

 

Failing to do so may force air further down the lines and into the ABS pump, unlikely but possible.

 

If you have liquid behind the pedal and you're sure it's not water, brake fluid won't evaporate from a test wipe, I think I'm correct in saying the master cylinder seals have had it and fluid will have leaked into the servo reservoir and leaked from there.

 

Long story short you'll have noticed a significant drop in brake fluid over time and both the master cylinder (seals?) and servo reservoir (seals?) will need sorting.

 

I've a bad feeling I read that the servo reservoir when leaking cannot be repaired as the internal diaphragm would be damaged and cannot be repaired and must be replaced.

 

It may be easier to replace the whole master cylinder/servo assembly eg from scrappy.

Thanks for that.

A have already ordered the master cylinder from TPS a didn't no a needed a brake servo aswel.

So the internals of the servo could be finished also.

Right so master cylinder fitted but brakes r worse than when a started .

Even with  a leaking master cylinder HELP please 

On 11/12/2017 at 00:16, Taximan1978 said:

Right so master cylinder fitted but brakes r worse than when a started .

Even with  a leaking master cylinder HELP please 

 

After fitting new master cylinder you'll need a full bleed of the system including a VCDS ABS pump bleed.

 

Please take it to a garage before your brakes fail and you kill yourself or even worse some one else!!!

A think that's were it'sgoing but a won't expect it to be cheap 

2 hours ago, Taximan1978 said:

A think that's were it'sgoing but a won't expect it to be cheap 

 

Not necessarily. Provided your master cylinder has been fitted correctly and the rest of the braking system is in serviceable order (calipers, pads, disks, flexi hoses and rigid brake lines) then all that is required is a proper brake bleed with new fluid throughout and VCDS bleed of the ABS unit. A brake fluid change won't cost the earth and might save your life. See if the main dealer has fixed price brake fluid change? Might be worth a punt. 

Thanks a will

Just phoned main dealer up and a full brake flush doesn't inlude ABS pump flush and they said that the pump was in 2 halfs a didn't understand that.

So still need help bleeding brakes with VCDS.