RE: [Quantum Owners] Brake Servo Problems

PAUL SLATER Thu, 08 Sep 2022 10:28:47 -0700

At least they did put some paint on them which beats some of their products today.

But do agree would have been sensible for them to use a brake fluid resistant paint not the same stuff they have used for eternity.

The compbrake setup is IVA compliant as long as the bias bar is dealt with as per current IVA guidance once setup.

Current IVA guidance is any bias brake setup has to be welded once set and pinning or lock wire as used to be allowed is no longer.

(service brake control/ mechanical components) 09b in current IVA manual.

Removing the servo is the main advantage to the compbrake setup I don’t see it as a issue at all.

Insurance company were more than happy with the compbrake setup with no extra charge but were less enthusiastic other options.

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From: Jim Hearne
Sent: 08 September 2022 16:59
To: quantumowners@googlegroups.com
Subject: Re: [Quantum Owners] Brake Servo Problems

The would be more servos around if Ford had thought to paint them with paint that was brake fluid proof.

The comp brake bias setup won’t pass a IVA test so don’t use it on a car that needs a IVA

And you do loose the servo.

Jim

From: 'Paul S Quantum' via Quantum Owners Group

Sent: Thursday, September 8, 2022 4:52 PM

To: quantumowners@googlegroups.com

Subject: RE: [Quantum Owners] Brake Servo Problems

We grew tired of the original servos failing. From the 5 failed servos here its always the big diaphragm that fails, well it is with the ones we have here. We did manage to patch a couple of them but the repair held but they failed quickly at a different point & of all the seals the big diaphragm is NLA.

Finding a good early Ka or Mondeo servo can be tricky with the good ones fetching silly money.

We went down the compbrake bias brake setup which is a bolt on conversion that replaces the original servo and master cylinder.

Not cheap mind but a permanent solution plus has the added advantage of cheap easy to get master cylinders and the ability to adjust the brake bias to exactly as you want it.

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From: 'Bill Allison' via Quantum Owners Group
Sent: 08 September 2022 14:08
To: quantumowners@googlegroups.com
Subject: Re: [Quantum Owners] Brake Servo Problems

An extremely useful source of info on Mk1 and 2 Fiesta parts and substitutes and suppliers thereof is the Ford Fiesta MK1 / MK2 owners club

Bill

On Thursday, 8 September 2022 at 12:19:50 BST, Jim Hearne <j...@quantums.info> wrote:

There are 2 very different master cylinder, servo and transfer bar setups on the Mk2 Fiesta

1986 was the changeover year so we need to work out which setup you have.

Can you send a picture ?

Unfortunately parts for both setups are vary hard to find.

If you have the ability to fabricate parts then there are various upgrades that can be done to either KA or Mondeo master cylinders and servos.

I don’t know if there are any off the shelf conversion kits though.

Jim

From: John Hogg

Sent: Thursday, September 8, 2022 12:01 PM

To: Quantum Owners Group

Subject: [Quantum Owners] Brake Servo Problems

Dear All

I hope someone can help. My recently purchased 2+2 has terrible brakes. I have replaced or refurbished the brake calipers and the pads are good. I purchased a replacement Servo but found it was very different to the original one fitted. I have tried to fit the new servo but find it is different in every sense.

Can anyone direct me to, or supply me with, a working servo for a 1986 1600 CVH engined Fiesta or the part number for.

Failing a replacement - does anyone know what else it can be - the pressure required to get the brakes to work is as if there is no assistance from the servo.

Any advice will be greatly appreciated.

Cheers

John

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RE: [Quantum Owners] Brake Servo Problems

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