General Car Related Discussion. To discuss anything that is related to cars and automotive technology that doesnt naturally fit into another forum catagory.

Advice with Pedal box!

Thread Tools
 
Search this Thread
 
Old 28-12-2008 | 10:05 PM
  #1  
Spiky's Avatar
Spiky
Thread Starter
Professional Waffler
iTrader: (1)
 
Joined: May 2003
Posts: 26,931
Likes: 0
From: Cardiff
Default Advice with Pedal box!

ok, bleed the brake on the car (runs a pedal box)

so bleed he front brake just now, and it was ROCK HARD, so thought great

then i adjusted the rod that connects from the MC to the balance bar

and now the there is no resistance on the fronts? and pedal hits floor?

why would this alter the pressure and make the brake pedal hit the floor?
Old 28-12-2008 | 10:29 PM
  #2  
dojj's Avatar
dojj
Resident Wrestling Legend
iTrader: (3)
 
Joined: May 2003
Posts: 50,018
Likes: 258
From: Little India
Default

you need smaller size m/c for teh fronts, larger m/c at the rear

then you adjust the bar to give you the closer proximity towards the smaller m/c to give you more leverage on the smaller one which turns out to give you more braking at the fornt

i may be corrected in a future post though, but having fitted one to my 3 door in about 1994, it's been a while
Old 28-12-2008 | 10:39 PM
  #3  
Spiky's Avatar
Spiky
Thread Starter
Professional Waffler
iTrader: (1)
 
Joined: May 2003
Posts: 26,931
Likes: 0
From: Cardiff
Default

why does the size matter to the fault i have?

and for your informaion my front and rears are different and i have an in car adjustter to give which ever balance i want.

next
Old 28-12-2008 | 10:43 PM
  #4  
ian sibbert's Avatar
ian sibbert
Advanced PassionFord User
 
Joined: Jul 2004
Posts: 1,859
Likes: 4
From: Lancaster, Lancs
Default

Spikey,

If we ever struggle getting a pedal with a bias box, you'll need two mates to open the nipples on whichever circuit you're trying to bleed simultanously, the bar will pivot too much and you'll experience problems similar to those you describe...

HTH

Ian
Old 28-12-2008 | 10:45 PM
  #5  
Spiky's Avatar
Spiky
Thread Starter
Professional Waffler
iTrader: (1)
 
Joined: May 2003
Posts: 26,931
Likes: 0
From: Cardiff
Default

ah ok, so need to do both fronts at the same time

the rear MC is always solid so looks like that circuit is fine..

cheers ian
Old 28-12-2008 | 10:47 PM
  #6  
Spiky's Avatar
Spiky
Thread Starter
Professional Waffler
iTrader: (1)
 
Joined: May 2003
Posts: 26,931
Likes: 0
From: Cardiff
Default

Originally Posted by ian sibbert
Spikey,

If we ever struggle getting a pedal with a bias box, you'll need two mates to open the nipples on whichever circuit you're trying to bleed simultanously, the bar will pivot too much and you'll experience problems similar to those you describe...

HTH

Ian
just add though, isn't it weird that it was solid and ok, then i adjusted the rod to the balance bar and it lost all pressure?
Old 29-12-2008 | 12:40 AM
  #7  
markk's Avatar
markk
10K+ Poster!!
iTrader: (2)
 
Joined: May 2003
Posts: 10,638
Likes: 105
From: Lancs
Default

Originally Posted by Spiky
just add though, isn't it weird that it was solid and ok, then i adjusted the rod to the balance bar and it lost all pressure?

sounds like the balance bar is maybe sticking, or that you had would the ba so far in that you locked one master off.
Old 29-12-2008 | 10:54 AM
  #8  
NUTS RuS's Avatar
NUTS RuS
15K+ Super Poster!!
iTrader: (35)
 
Joined: May 2003
Posts: 15,109
Likes: 0
From: Vimto Land Nr Warrington, Cheshire
Default

Have the rears been bled yet ?

Has it lost pressure on the front or is the bar just defaulting to the lowest pressure side (the rear) making you think it has ?
Old 29-12-2008 | 11:18 AM
  #9  
Spiky's Avatar
Spiky
Thread Starter
Professional Waffler
iTrader: (1)
 
Joined: May 2003
Posts: 26,931
Likes: 0
From: Cardiff
Default

Originally Posted by NUTS RuS
Have the rears been bled yet ?
yeah they have, and that mc has loads of pressure

Originally Posted by NUTS RuS
Has it lost pressure on the front or is the bar just defaulting to the lowest pressure side (the rear) making you think it has ?

yeah has only lost pressure on the front, so when i now press the pedal the rear dont budge and front goes all the way in
Old 29-12-2008 | 11:32 AM
  #10  
NUTS RuS's Avatar
NUTS RuS
15K+ Super Poster!!
iTrader: (35)
 
Joined: May 2003
Posts: 15,109
Likes: 0
From: Vimto Land Nr Warrington, Cheshire
Default

How and wich way did you adjust the front rod and why ?

If it needs to be shorter its best to cut it
Old 29-12-2008 | 11:35 AM
  #11  
Spiky's Avatar
Spiky
Thread Starter
Professional Waffler
iTrader: (1)
 
Joined: May 2003
Posts: 26,931
Likes: 0
From: Cardiff
Default

i noticed the pedal could come up, so lengthened the rod, so it brought the pedal up a little

can i not do this once the brake are bleed?

if thats the case, thats ok, i will set the rods then bleed again and leave
Old 29-12-2008 | 05:04 PM
  #12  
Spiky's Avatar
Spiky
Thread Starter
Professional Waffler
iTrader: (1)
 
Joined: May 2003
Posts: 26,931
Likes: 0
From: Cardiff
Default

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Cos500
General Car Related Discussion.
9
15-09-2015 07:47 PM
focus2351
Ford Sierra/Sapphire/RS500 Cosworth
0
09-09-2015 10:33 PM
andrewmctiernan
General Car Related Discussion.
0
08-09-2015 04:05 PM
natehall
Ford Focus (All Models)
5
08-09-2015 06:13 AM
Rizlablue
Garage / Workshop & Tools Section.
0
06-09-2015 10:58 AM




All times are GMT. The time now is 07:38 PM.