syncro tdi lock/unlock system reardiff

[jimtdi]

Hello there,
I’m building a syncro golf mk2 from 1986. I build a tdi in it, but i have some questions about the function of the hoses from the rear diff. I have two hoses (correct me if i’m wrong), a black one and a green one. Which of them is vacuum and where do i have to mount them, because it’s a diesel.
I have find out the working of the relay that gives the signal, but to know if it works i have to replace the hoses.

I hope that somebody can help me with it,

Greetings jim

[Chris S]

Rear Diff Vacuum & electric wiring

nr 16 is an air vent & goes into the wiring harness sheathing to prevent any foreign bodies (I.E. muck)from getting in.

The 3 ball res is mounted under the left hand front wing.

nr 4 the non return valve can be connected to any vacuum spigot on the inlet manifold.

This is the layout from the carburettor motor to the bulkhead mounted green ball res (which is then connected to the 3 ball res & rear diff via the non return valve, the green line is the important Syncro one) but if you are running a Diesel you can just connect it to a take off on the the inlet manifold.

[jimtdi]

quote:

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Originally posted by Chris S

Rear Diff Vacuum & electric wiring

nr 16 is an air vent & goes into the wiring harness sheathing to prevent any foreign bodies (I.E. muck)from getting in.

The 3 ball res is mounted under the left hand front wing.

nr 4 the non return valve can be connected to any vacuum spigot on the inlet manifold.

the green line is the important Syncro one) but if you are running a Diesel you can just connect it to a take off on the the inlet manifold.

Hey Chris,
Thanks for the answer,i will read this some times to understand. I will finish the engine and after that i will try this, we keep in touch!

Greetings jim

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