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Author Topic: Handbrake Help  (Read 2523 times)

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TheBoy

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Handbrake Help
« on: 11 February 2008, 20:03:29 »
Can't get it through the MOT.  OSR handbrake just hasn't got enough.

Before MDTM adjusted and cleaned it all, it was both sides that were naff/

I have now changed the rear discs (genuine) and shoes (ferrodo) and pads (genuine) for good measure, but on a test, pulling handbrake on sharply at 30mph leaves only 1 black line in the road.


I am out of ideas, and really don't want to scrap the car  :'(
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hotel21

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Re: Handbrake Help
« Reply #1 on: 11 February 2008, 20:04:45 »
whats the percentage braking effort achieved on each wheel?
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TheBoy

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Re: Handbrake Help
« Reply #2 on: 11 February 2008, 20:07:29 »
Quote
whats the percentage braking effort achieved on each wheel?
Dont have %, just the figures (unsure of units):

NSR - 150, lockup
OSR - 80, no lockup
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albitz

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Re: Handbrake Help
« Reply #3 on: 11 February 2008, 20:08:06 »
cable stretched ?
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TheBoy

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Re: Handbrake Help
« Reply #4 on: 11 February 2008, 20:10:20 »
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cable stretched ?
Things all adjusted as I think they should be, which should eliminate the chances of stretched cables.  The cable has be changed since I've had the car as well.
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hotel21

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Re: Handbrake Help
« Reply #5 on: 11 February 2008, 20:12:00 »
sounds like one side is duff, right enough. with OSR being the bugger.....

Think they should be to within 10% of each other and to provide collective 16% minimum braking effort.

No sticking shoe or fubar adjuster?



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TheBoy

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Re: Handbrake Help
« Reply #6 on: 11 February 2008, 20:13:36 »
Quote
sounds like one side is duff, right enough. with OSR being the bugger.....

Think they should be to within 10% of each other and to provide collective 16% minimum braking effort.

No sticking shoe or fubar adjuster?

Just replaced the shoes tonight.  Not much can got wrong with adjuster - seems OK I think....   ....but then I can't think what else it can be....

« Last Edit: 11 February 2008, 20:14:05 by TheBoy »
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hotel21

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Re: Handbrake Help
« Reply #7 on: 11 February 2008, 20:15:38 »
simple but obvious....

remove all the protective coatings before assembly?  If just put together may well require repeated applications when moving - not to lockup just to wear - the shoes into place....
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TheBoy

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Re: Handbrake Help
« Reply #8 on: 11 February 2008, 20:18:45 »
Quote
simple but obvious....

remove all the protective coatings before assembly?  If just put together may well require repeated applications when moving - not to lockup just to wear - the shoes into place....
I degreased the stuff as I normally do - gunk, then a thorough wash with fairly liquid.  Obviously I paid attention to the 'shoe' area of disc as well, as that was what I was most concerned about....
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tunnie

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Re: Handbrake Help
« Reply #9 on: 11 February 2008, 20:22:37 »
you have a PM  ;)
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lee4206

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Re: Handbrake Help
« Reply #10 on: 11 February 2008, 20:23:46 »
Did you deadjust the cable before doing the shoes
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VAUXHALL TRADE CLUB AND HALFORDS TRADE CARD  AND V6 LOCKING KIT HOLDER  always happy to help if poss

hotel21

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Re: Handbrake Help
« Reply #11 on: 11 February 2008, 20:23:52 »
trick I've used before is a quick light spray with a rattle can of paint on the linkages/pivot points where the cables are bare wire, not in the shrouds.  Then have a few applications of the brake (moving or stationary, makes no diff) to see that the same relative movement on each side.  Not a cure, but can give an idea of what particular bit to look at most.

I think, however, the shoes on that corner just need to bed in some more....
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TheBoy

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Re: Handbrake Help
« Reply #12 on: 11 February 2008, 20:25:33 »
Quote
Did you deadjust the cable before doing the shoes
yes
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pogo

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Re: Handbrake Help
« Reply #13 on: 11 February 2008, 20:48:34 »
Have you 'roughed' up the shoes with sandpaper to help them settle in??
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Marks DTM Calib

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Re: Handbrake Help
« Reply #14 on: 11 February 2008, 21:33:40 »
ARe all cables mvoing freely?

With the hand brake applied hard, is the adjusting point link bar off to one side or nice and perpendicular to the handbrake?
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