Twin Reservoir Brake
System For Safety
For Mklll Cars
By Karl Schluter
-Low Zep
Above is a
diagram for the install of a twin circuit brake system.
This is the
same system I have set up on my car and have tested for the last 8 years.
I brought
the master cylinder new (as they are reasonably priced). The one I have is
listed for a MklV Cortina
and a similar model for Land Rovers can also be used. When mounting the master
cylinder to the MKlll booster, the push rod will first need to be modified.
This involves measuring its length and shortening it the required amount.
Measure the depth of the piston inside the brake booster and add to this the
distance of the piston inside the master cylinder. This measurement does not
have to be exactly to the last mm as the push rod is adjustable to a certain
degree. When mounting the master up on the final fitting, the push rod should
very slightly preload the piston in the master cylinder. I ran all new lines as
the fittings are different from standard MKlll and you will need a complete new
line to the rear of the car anyway. I say this because I feel adding an inline
joiner to connect to an old battered underneath brake line that could be near
its use by date is not a wise way to save money on something so important.
It is also a
good time to check all rubber lines and upgrade to a good fluid. I reused the
standard MKlll cross shaped junction box for the brake lines. The top hole (A)
I put a bleed screw in, the hole facing towards the
rear of the car (D) I kept the brake sender unit in. The hole pointing down (E)
I put the pipe to the left hand wheel in and the pipe hole facing to the front
of the car (C) I put the brake pipe that goes to the driver’s side right hand
wheel.
Now the
lines for the master cylinder go as follows:
The hole in
the centre of the brake line junction box (B) goes to the front port (on the
side) of the master cylinder (F), the other one next to it I put a bleed screw
in just to block it off (this happened to be the underside one). The port at the
rear of the master cylinder (R) goes to the back brakes
Disclaimer: The advice
and guidelines given in these articles are given in good faith. The owners
and managers of the Galeforce Zephyr site will take no responsibility for
any injuries or loss sustained while carrying out the described tasks and
procedures or any consequences arising. Please read the Safety First Article
Why not
do an Article on your Pride and Joy and have it featured on the home
page or spend an hour doing a technical article about anything you have done
or know of to do with these cars
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this site, to make it bigger and better. Any information on these cars will be
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