Fordmods Logo

vacuum assisted brakes not allways assisting. 

 

Page 1 of 1 [ 3 posts ] 

 
 Post subject: vacuum assisted brakes not allways assisting.
Posted: Sat May 10, 2014 4:03 pm 
Getting Side Ways
Offline
User avatar

Age: 45

Posts: 3440

Joined: 23rd Dec 2007

Gallery: 32 images

Ride: BA XR6T (mix of BA, BF and FG)

Location: Perth
WA, Australia

Hi Folks,

I have a BA XR6T and every now and then the brake assistance doesn't work for a while usually it comes back after about 30 seconds and everything is fine again..

I've checked the hose that runs from the intake to the booster for cracks or leaks and found nothing.

If it happened all the time I'd think the diaphragm in the booster was naffed.. but the vast majority of the time it works perfectly.. then you will hit the brake one day and there are almost none to speak off. last time I came close to hitting the car in front of me so I want to get it sorted.

Has anyone had this happen to them? intermittent booster assist I mean?

The engine is not reving when it happens either, because I'm obviously trying to decelerate at the time. So I imagine there is a vacuum were there should be.


I think I'll get a new booster just in case.. but since it's not losing fluid and the ABS and everything else works fine it almost has to be the booster right? Can anyone think of anything else it could be?


regards

Frank
Top
 Profile  
 
 
 Post subject: Re: vacuum assisted brakes not allways assisting.
Posted: Sat May 10, 2014 8:27 pm 
Fordmods Junkie
Offline
User avatar

Age: 38

Posts: 1000491

Joined: 6th Nov 2004

Gallery: 2 images

Ride: AUXR6 HP With Ducati SupA Bike!

Location: Perth
WA, Australia

no idea about the turbos do they have a 1 way valve to stop positive pressure getting the booster?
or is the vac tube for the booster before the turbo?

could mount a small elec vacuum pump instead?

what about the seal at the booster for the vac line is that cracked at all?

 

_________________

RIP SCOTT

Top
 Profile  
 
 
 Post subject: Re: vacuum assisted brakes not allways assisting.
Posted: Sun May 11, 2014 2:37 am 
Getting Side Ways
Offline
User avatar

Age: 45

Posts: 3440

Joined: 23rd Dec 2007

Gallery: 32 images

Ride: BA XR6T (mix of BA, BF and FG)

Location: Perth
WA, Australia

Disco Frank wrote:
no idea about the turbos do they have a 1 way valve to stop positive pressure getting the booster?
or is the vac tube for the booster before the turbo?

could mount a small elec vacuum pump instead?

what about the seal at the booster for the vac line is that cracked at all?



The pickup for the brake booster vacuum is on the engine side of the throttle butterfly.. so it would still get vacuum much of the time.. I believe there is a check valve somewhere yes.. don't know where it is though.. perhaps it's in the white fitting on the booster that the hose goes onto?
It might be worth adding a vacuum tank to it.. or an electric pump as they do in the mondeo's.

Ford did a recall on some falcons because the checkvalves stopped working.. might be time to see if I can find mine and clean it up.

This looks like I need:
http://www.ebay.com.au/itm/GENUINE-FORD-BA-BF-FALCON-BRAKE-BOOSTER-VACUMN-VALVE-REVISED-TYPE-/300725368126

but it doesn't say if its for the turbo or not.
I've written to ask.
Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 3 posts ] 

Who is online

Users browsing this forum: No registered users and 20 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Mon Dec 11, 2017 6:59 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names