c5 handbrake
Moderator: RichardW
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- (Donor 2021)
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c5 handbrake
hi all, a bit of advice needed..
car failed yesterday on the near side handbrake.. I could feel the slack in the lever for a few weeks.. ordered the new cable and guide and have just set about fitting.. but there is nothing wrong with old cable..
however, the lever arm on the caliper is fairly tight to turn and doesn't spring back..
what would you do?
I am wondering if it is best to fit another caliper, (which means I may well be carless for a few days, not ideal) or to try and free this one up a bit in-situ, or to remove this caliper from car and take to workshop? (how ,uch dismantling would I need to do)
Have never worked on c5 brakes before.. am I right in saying they are conventional i.e. with brake fluid not hydraulic?
If so, that opens up a whole mess of bleeding and two people..
any help appreciated,
John
will go back outside now and put the heat shield etc back on
car failed yesterday on the near side handbrake.. I could feel the slack in the lever for a few weeks.. ordered the new cable and guide and have just set about fitting.. but there is nothing wrong with old cable..
however, the lever arm on the caliper is fairly tight to turn and doesn't spring back..
what would you do?
I am wondering if it is best to fit another caliper, (which means I may well be carless for a few days, not ideal) or to try and free this one up a bit in-situ, or to remove this caliper from car and take to workshop? (how ,uch dismantling would I need to do)
Have never worked on c5 brakes before.. am I right in saying they are conventional i.e. with brake fluid not hydraulic?
If so, that opens up a whole mess of bleeding and two people..
any help appreciated,
John
will go back outside now and put the heat shield etc back on
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Re: c5 handbrake
Disconnect the cable from the lever then spray around where the lever enters the calliper with WD40 and work the lever back and forth until it comes free, it could take some time The lever going back to the stop is necessary for the brake to adjust.
Man is, by nature, a lazy beast, he does not need twice encouraging to do nothing.
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- (Donor 2021)
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Re: c5 handbrake
the plot thickens..
I did replace the drivers side handbrake cable 2 years ago, certain it was that side.
just had a look at both calipers..
with both cables unhooked, the passenger side cable moves much more freely than the drivers side.. but the drivers side caliper springs back instantly, the passenger takes a few seconds..
but.. if I try to turn the levers using a grip, the drivers side doesn't move much, maybe 5mm, and the passenger side moves more like 10-15mm
edit :
ahh! thanks gibbo! sounds like the passenger side has gone out of adjustment because it wasn't returning to the stop !
I did replace the drivers side handbrake cable 2 years ago, certain it was that side.
just had a look at both calipers..
with both cables unhooked, the passenger side cable moves much more freely than the drivers side.. but the drivers side caliper springs back instantly, the passenger takes a few seconds..
but.. if I try to turn the levers using a grip, the drivers side doesn't move much, maybe 5mm, and the passenger side moves more like 10-15mm
edit :
ahh! thanks gibbo! sounds like the passenger side has gone out of adjustment because it wasn't returning to the stop !
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Don't be afraid to pull a caliper apart and rekit.
I've seen corrosion between the dust boot piston seal, that was enough to make the piston well stuck (and therefore not very effective). Can take awesome pressure to release this, sometimes if you can remove the piston dust boot you can get enough light lube/solvent in the clearance to allow screwing in/out and some freeing up - but it still then needs a full overhaul once apart.
I've seen corrosion between the dust boot piston seal, that was enough to make the piston well stuck (and therefore not very effective). Can take awesome pressure to release this, sometimes if you can remove the piston dust boot you can get enough light lube/solvent in the clearance to allow screwing in/out and some freeing up - but it still then needs a full overhaul once apart.
Re: c5 handbrake
Since refurb calipers are avaiable at a very good price, it's not really worth dong it yourself.
Freeing the brake lever may last long term, a day or two, or anything in between. Mine eventually gave in to metal fatigue through being freed so often Having fitted a refurb caliper, I realise that I should have done so ages before and saved myself a lot of hassle.
Freeing the brake lever may last long term, a day or two, or anything in between. Mine eventually gave in to metal fatigue through being freed so often Having fitted a refurb caliper, I realise that I should have done so ages before and saved myself a lot of hassle.
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- (Donor 2021)
- Posts: 4625
- Joined: 27 Nov 2005, 19:07
- Location: Kent / Susssex
- My Cars: 2010 C5 X7 2.0 hdi 160 exc auto
MG TF 135
Boxer II 2.2 camper conversion
BMW R1200RT
BMW K1300 R
Honda V F R 800 5thG / MT500 Armstrong - x 39
Re: c5 handbrake
thanks both...
handbrake already feels much better after a few wiggles.. will come back to it tomorrow..
right now, I just need an MOT
handbrake already feels much better after a few wiggles.. will come back to it tomorrow..
right now, I just need an MOT
Re: c5 handbrake
i agree with all of this except that orible W stuff, it should be entered into the forum censor box, to have it replaced by Plus gas, duck oil or even at diesel fuel, when required as a penetrating fluid,Gibbo2286 wrote:Disconnect the cable from the lever then spray around where the lever enters the calliper with WD40 and work the lever back and forth until it comes free, it could take some time The lever going back to the stop is necessary for the brake to adjust.
jgra1 wrote: Have never worked on c5 brakes before.. am I right in saying they are conventional i.e. with brake fluid not hydraulic?
If so, that opens up a whole mess of bleeding and two people..
any help appreciated,
John
not really John
just purchase one of these
http://www.halfords.com/motoring/garage ... -eezibleed" onclick="window.open(this.href);return false;
they are very good
Regards, malcolm.
current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
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Re: c5 handbrake
Ummm.....the constant problem.....I agree with dnsey
My mk1 had this problem for 2 years before I decided I could not trust the calipers any more, the ONLY way is to rebuild them or put on exchange/new calipers. ALL methods are short term and the problem will one day delay you or bugger up the disks.
My mk1 had this problem for 2 years before I decided I could not trust the calipers any more, the ONLY way is to rebuild them or put on exchange/new calipers. ALL methods are short term and the problem will one day delay you or bugger up the disks.
Alasdair
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Activa, the Moose Rider
3x C5x7 Steering racks and counting
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- (Donor 2021)
- Posts: 4625
- Joined: 27 Nov 2005, 19:07
- Location: Kent / Susssex
- My Cars: 2010 C5 X7 2.0 hdi 160 exc auto
MG TF 135
Boxer II 2.2 camper conversion
BMW R1200RT
BMW K1300 R
Honda V F R 800 5thG / MT500 Armstrong - x 39
Re: c5 handbrake
thanks all
yesterday, all I had here was 3-1 .. that's done something useful.. I went to nearest garage this am and got some WD*** .. sprayed that, took the spring off, wiggled and the car is all back together.. the lever has only a slight slack, and that goes after a second..
I may even leave the car with handbrake off from now on.. just so the actuators are always in the rest position..
with the car back on the ground, and the wheels in the air, one at a time, I got a 50cm bar and a 19mm on a wheel nut.. both wheels locked solid before the first click..
with wheels on ground in 1st gear on one click, its just possible to move the car /engine running / clutch only - only just..
last week the MOT brake results were NS - 19KgF / OS 361KgF - imbalance 94
later on I read HANDBRAKE - >=16% 24%
Hand brake - PASS
the overall test result for the braking sheet is a PASS
no idea it failed on no effort from the NS HB
thanks for all pointers.. will probably rebuild caliper when spring arrives or I next go near the brake system
Have an easy bleed and now a vac bleed.. presumably I can just clamp the local pipe, rebuild caliper, and just bleed that one corner?
yesterday, all I had here was 3-1 .. that's done something useful.. I went to nearest garage this am and got some WD*** .. sprayed that, took the spring off, wiggled and the car is all back together.. the lever has only a slight slack, and that goes after a second..
I may even leave the car with handbrake off from now on.. just so the actuators are always in the rest position..
with the car back on the ground, and the wheels in the air, one at a time, I got a 50cm bar and a 19mm on a wheel nut.. both wheels locked solid before the first click..
with wheels on ground in 1st gear on one click, its just possible to move the car /engine running / clutch only - only just..
last week the MOT brake results were NS - 19KgF / OS 361KgF - imbalance 94
later on I read HANDBRAKE - >=16% 24%
Hand brake - PASS
the overall test result for the braking sheet is a PASS
no idea it failed on no effort from the NS HB
thanks for all pointers.. will probably rebuild caliper when spring arrives or I next go near the brake system
Have an easy bleed and now a vac bleed.. presumably I can just clamp the local pipe, rebuild caliper, and just bleed that one corner?
Re: c5 handbrake
Johnjgra1 wrote:thanks all
yesterday, all I had here was 3-1 .. that's done something useful.. I went to nearest garage this am and got some WD*** .. sprayed that,
why go out a purchase that orible W stuff, when what you already had/used was actually a lubricant/oil , and that W stuff is a moisture displacent
Regards, malcolm.
current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
Re: c5 handbrake
you only require one or tother Johnjgra1 wrote:
Have an easy bleed and now a vac bleed..
yes thats exactly what i would dojgra1 wrote:
presumably I can just clamp the local pipe, rebuild caliper, and just bleed that one corner?
Regards, malcolm.
current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
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- (Donor 2020)
- Posts: 7172
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- Location: GL15***
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Currently Renault Zoe 2014 ZE - x 2500
Re: c5 handbrake
'tis the same as Plus gas same milk in a different bottlecitronut wrote:Johnjgra1 wrote:thanks all
yesterday, all I had here was 3-1 .. that's done something useful.. I went to nearest garage this am and got some WD*** .. sprayed that,
why go out a purchase that orible W stuff, when what you already had/used was actually a lubricant/oil , and that W stuff is a moisture displacent
Man is, by nature, a lazy beast, he does not need twice encouraging to do nothing.
-
- (Donor 2021)
- Posts: 4625
- Joined: 27 Nov 2005, 19:07
- Location: Kent / Susssex
- My Cars: 2010 C5 X7 2.0 hdi 160 exc auto
MG TF 135
Boxer II 2.2 camper conversion
BMW R1200RT
BMW K1300 R
Honda V F R 800 5thG / MT500 Armstrong - x 39
Re: c5 handbrake
I have PG but its in the workshop, decided to tackle this job at home..
wd is useful about the house..
'you only require one or tother John' thanks Malcolm I got the vac bleed for the bike.. good old Honda linked braking system :O
wd is useful about the house..
'you only require one or tother John' thanks Malcolm I got the vac bleed for the bike.. good old Honda linked braking system :O
Re: c5 handbrake
I might be wrong, but I think special tools will be required to rebuild the handbrake mechanism.
Let us know what you find - I have a theory that the mech rusts internally from water in the brake fluid.
Let us know what you find - I have a theory that the mech rusts internally from water in the brake fluid.
Re: c5 handbrake
If working on the brakes make sure that you do not allow the fluid to drain completely. If you do you will probably need a diagnostic tool to activate the ABS pump in order to properly bleed the system. This is now the case for most cars.