Jump to content
mouse

Servo Vacuum

Recommended Posts

Hi Gang.

I'm still having trouble with the brakes on my Mk.1 Tina.

It has a 1600 escort crossflow fitted and a servo.

I have had a Vacuum gauge on the inlet manifold

at tick over it shows 11 Inches of vacuum.

The question is how much Vacuum do I need to

operate a remote servo??

Info would be good..

 

Regards Mouse..

Share this post


Link to post
Share on other sites

Question - what problem are you having?

 

 

On your servo question I'd have thought that should be enough vacuum.  Have you tested the servo - two thoughts:

1. With the car turned off press the brake pedal several times, on the last time hold the pedal down (you don't need to press the pedal really hard).  With your still foot on the brake pedal start the car.  If the servo is working the pedal should drop a bit

2. On the converse run the car without pressing the brake, turn off the car, have someone listen near the servo as you press the brake, they should be able to hear air rush into the servo when you press the brake pedal

Share this post


Link to post
Share on other sites

Hi.

The problem is that I have new discs new callipers and pads.

I have tried the tests you mention and all you say I am getting.

With the engine turned off if I pump the pedal you can hear the

servo hissing and the pedal comer up to the top.

I have been told that it may have to bed in and that I am expecting

it to be like a modern car.

Do you think that 11inches HG would be enough or do you think

that an electric vacuum pump would do any good??

 

Your reply would be good.

 

Regards Mouse..

Share this post


Link to post
Share on other sites

A healthy engine should give hg reading around 15-20 depending on atmospheric pressure.

 

try adjusting air fuel mixture with the gauge connected to the manifold,also check valves for poor seating.

Share this post


Link to post
Share on other sites

Hi.

Thank's for your comments.

 

Regards Mouse..

Share this post


Link to post
Share on other sites

is yr servo mounted correctly,  they dont seem to bleed to easy if mounted wrong?

3000118_995.jpg

  • Like 1

Share this post


Link to post
Share on other sites

Hi Dude.

I've been through this before and the jury seems to be out on the positioning

of the remote.mine is virtually level and did not have many probs bleeding it

I have a friend with a Mk.1 Escort and his is stuck up in the air.no probs bleeding it..

 

Thank's for your interest-even after ferocious and frequent bleeding the brakes are still crap.

 

Regards Mouse..  

Share this post


Link to post
Share on other sites

have you taken out as much play as you can on the rear brake shoes?, also if you are bleeding manually by hand its worth getting a vacume bleeder that runs of a compressor, they are very good tools

Share this post


Link to post
Share on other sites

Hi.

I've tried just about everything you can think of.

The next thing is to drag it round the block and

see if they just need bedding in(I think that's wishful thinking)

 

Regards Mouse..

Share this post


Link to post
Share on other sites

I think you will find they brakes to be very "springy" if they are not yet bedded in, with lots of travel

Share this post


Link to post
Share on other sites

11 is borderline not enough, as said 15-20 ish.

Is the pipe connected to the correct place on the manifold ?

Share this post


Link to post
Share on other sites

Out of interest, what brake calipers are you using?

I know someone that was having the same problem with Princess 4pots on a mk2 and it turns out he installed the pads incorrectly.

Share this post


Link to post
Share on other sites

Hi Gang.

On my last post I did say that a tow round the block may do it good .

I'll keep you in the loop.

 

Regards Mouse..

 

As for the calipers I'm using NEW Escort Mk.2 .

At first I was using a master cylinder that was too small

so I fitted one with a bigger bore to match the Escort calipers.

Since I fitted that the pedal is harder and not as much travel.

Regards Mouse..

 

 

With regard to the servo outlet pipe.

It is just forward of the centre.

 

Regards Mouse..

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...