[DC240S]

I was quoted approx £500 to change both sensors at an Indi - DIY cost me nothing - in fact I made a profit with the sale of surplus OE sensors (bought 4x genuine for £10 ea. from a VAG dealership).

Entirely possible as a DIY job - buy the parts/tools you'l need in advance and recommend a pressure bleeder like the SEALEY one I used.

Buy a replacement securing bolt for the reservoir as engaging that in the thread is perhaps the fiddliest job and its likely you'l drop it - think mine fell into the hole in the chassis box section! - I had to then wait a week for a replacement!

https://www.ttforum.co.uk/forum/viewtop ... &start=675

 

[DC240S]

Thanks, you did well to get those sensors for a mere tenner , the cheapest Genuine I could find were £80 each .
No way am I going to fit repros off eBay as they all seem the same items from China , just at different prices.
Sadly the reservoir securing bolt appears to be NLA.
I see from your thread that you only bled the master cylinder , front calipers and clutch?
Did you not do the ABS pump bleed?
That looks a worse job than the sensors :lol: .
Lastly, Bentley says the torque for the sensors is 10ft/lbs , is there space to get a socket/torque wrench in there or do you have to guesstimate and did the new sensors need calibrating with VCDS once fitted?
Thanks .

Use genuine sensors supplied from TPS or VAG dealership or other confirmed VAG source - there are some convincing chines copies on eBay.
Strange on the bolt - have you tried Coverdale parts?
No need to bleed the ABS pump - there was a reason as I remember - perhaps because the system is bled before and the unit isn't cycled through the process?
Torque was indeed approximate - no access for the torque wrench I have.
No VCDS calibration required - just a code scan and clear down.

DC

 

[DC240S]

Thanks that's really useful info , I'm going to get one of those Sealey gizmos you mention , I do have an Ezibleed but the Sealey looks much better.
It is odd about the reservoir bolt (1J2 611 353) , I was given a price this morning at my local VW main dealer so I ordered it, but they rang me soon after to say it was no longer available.
I have found it on the internet in Lithuania & Slovakia but with carriage included it would cost £20-25 which is insane for a single bolt.
I've just bought a cheap s/h master cylinder and reservoir off eBay with the bolt included for well under that, so it's sorted :mrgreen: .
Am feeling a lot more confident now about doing the job , thanks again .

As I mentioned in my thread when removing the reservoir try to avoid accidentally pulling the rubber clutch fluid supply hose away from the bulkhead hard pipe - its well hidden behind the aluminium heat shield which needs to come off to re-attach/clip - that's a real faff!

DC

 

[DC240S]

Nice! Will be very satisfying when completed

 

[DC240S]

I've got all the parts and tools required now to do the job, plan is to change the sensors early next week.
Seeing as how access is so tight in there, I plan on removing the reservoir as per DC240S's thread.....

DC240S; can I pick your brains with regard to the hydraulics please?
Did you just whip off the old sensors and screw the new ones in, or did you try and fill the new sensors with a drop of brake fluid prior to putting them in (there seems to be enough room to get fluid in there..)?
When it comes to bleeding what order did you do it in?
I'm guessing :
Master cylinder bleed nipples
Front left calliper
Right front caliper
Clutch

Lastly , I gather from your thread that you didn't need to do an ABS pump bleed?
I'm really hoping that I don't either!

Thanks!

After syringing as much fluid from the master cylinder as possible (with workshop tissue underneath for spillage/dripping), I just removed old sensors and replaced with new.
Yes - bled master cylinder first - then clutch IIRC then callipers. Didn't need to bleed ABS as this remained a closed circuit during process. To 100% remove old fluid and any air suspected in the system - yes bleed the ABS.

Thats as I understand/did - I may be corrected.

 

[DC240S]

I should have Googled it first .
Just found a video explaining Golf master cylinder removal which shows it , around the 2 mins 50 secs mark.....

Yep - it all unclips - patience is key - go slowly.

 

[DC240S]

Glad I could help! It's what the community's for.

 

[DC240S]

Hi Dc reading up on the brake servo sensor replacement and was looking for advice on how to remove the brake fluid reservoir retaining screw. Thanks AJ

As I recall it's a small bolt. It makes the task easier ensuring you have cleared as much access as possible.

Plug any chassis holes and have a cloth underneath to catch it - a magnet is useful too.