Later master cylinder install?

[leon]

I've just received my later non servo disc brake master cylinder, and noticed that there is one hole missing. The early master cylinder has 3 brake pipes coming from it with 2 brake switches, whilst the later m/c has only 4 holes which i assume means 2 pipes and 2 switches. So is it a case of putting a 'T' piece on the front brake pipes and off you go?

Thanks in advance,
Leon.

 

[AxlFoley]

one of the switches could be for the brake failure light in the dash, dissconect one in turn and see if the brake lights still work.

Also did you buy the bolts you needed in the end, I only got round to measuring them today, the thread length is 22mm

 

[faux]

I have fitted a non servo disc brake MC to my bus, I could only fit the one switch so left out the dash light.

The other thing I had to do was extend one of the brake lines by 3 inches. But there may have been a better way, it was just easier for me to do it this way.

 

[leon]

Thanks for the info guys. I was looking at my manual earlier after posting this, and it seems the later m/c did only have 2 pipes with a 'T' section splitting them. After discovering this I went and had a look at a later bays brake system and sure enough it's split. Now i'm confused as i was going to ditch one of the switches :?

Anyone else gone the other way with a 'T' split on the front brake line?

thanks again.
leon

 

[angus]

Just done exactly this, when fitting my new MC.
Rear brakes meet in a 'T' at the back, single pipe runs up bus to 'front' of M/C where there is a single outlet.
Front brake pipes run from each wheel, meet at a 'T' and run into 'back' of M/C, where there are two outlets on second circuit. Other outlet has brake light switch in it, if that makes sense.

I also had to extend some pipe (pain in the ass to!!)
I had wondered why there were 2 switches in my system - seems that one of the switches is simply being used to block off one of the outlets on one of the 'T' pieces, which is effectively being used as a 'joiner' to extend the pipe length.

Anyway - all passed the MOT last week...

There do seem to be loads of slightly different M/C options/castings/orientations in terms of what is blanked off and where on the M/C itself, depending on where you buy...

 

[faux]

I think you can just use one switch and not bother with T piece. It just means the dash light wont work effectively. But you will need to extend that one brake line by the sound of things.

Good luck and let us know how it goes.

Jon

 

[leon]

Just finished installing master cylinder and went the 'T' way, as i already had one. Went for a test run and everything seems to be good, no pulling what a novalty, seems like it needs a good bedding in, which i don't especially enjoy doing without MOT. I suppose the MOT man will be the big test. Let you all know how i get on.
Thanks for responses
Leon.

 

[pete nice]

What's the difference between early & later cylinder?

Is there any advantage in fitting a later one?

 

[ant]

good news dude well done

 

[leon]

What's the difference between early & later cylinder?

Is there any advantage in fitting a later one?

Probably nothing, exept what i've previously said, but everywhere i've read about this conversion they recommend this later master cylinder.

Anyway it passed MOT first time, so i'm happy I've never passed first time with any of my old VW's. GET IN!

 

[ant]

 

[faux]

Top one! 8)