Thread: Accessing diaphragm on fuel pressure regulator on d2 td5

I think it's possibly easiest to remove the FPR altogether, it's not necessarily the regulator that's leaking, there's a few others that can as well, new gaskets can overcome this, and the filter in the head can also be checked (replaced $$) at the same time.

Secondly, I think you are referring to the difference between the EU2 FPR and head, and the EU3 FPR and head.

Thanks Shak, I actually had it off as I'm rebuilding a td5. I replaced all the gaskets and orings except the diaphragm, that's why I thought it might be easier from underneath.
Didn't really want to undo everything again.... but if i have to...

I believe you can change it without removing the whole unit.

Someone did it on one of the UK forums on a D2, I can't remember the procedure though sorry.

If you have to take the lot off the hard to get at bottom bolt can be accessed through the drivers side wheel arch. Replace the diaphragm with a Bosch unit part no 0 280 160 575. If you can't get one I have one here. I also have one of the not so good ones, part no CFI-8061. Both new.

That's ok, I'll keep looking ?

Originally Posted by sharmy

If you have to take the lot off the hard to get at bottom bolt can be accessed through the drivers side wheel arch. Replace the diaphragm with a Bosch unit part no 0 280 160 575. If you can't get one I have one here. I also have one of the not so good ones, part no CFI-8061. Both new.

Hi Sharmy, i have a MSA 100000 still in wax paper and this one which has no writing on it at all....ugh for some reason the jpg wont upload its one that has a barbed pipe instead of just a hole

I have 2. A MSA 100000 in wax paper and another one in a pack with orings, metal gasket and a diaphragm that has a barbed pipe instead of just a hole.
I wanted to upload a jpg of it but for some reason it wont upload.

[QUOTE=WTF123;3263376] diaphragm that has a barbed pipe instead of just a hole.


Its just a drain port the barbed type is just to retain a rubber hose as its a multi fit item and on some cars fuel will need to be drained away safely

It is possible to replace the diaphragm in situ but its an absolute pain (need a perfect shaped circlip pillars which unless very lucky never seems be in the correct position) and will probably end up removing the fpr, unless the trans is out of the way