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Post by Deleted on Jul 17, 2016 20:27:06 GMT
I should have known. Now it turns out that the brake cylinder is buggered. Then it turns out that you can't get this brake cylinder in Chile, and it'll cost me £1,000 plus shipping to get it form the US. And that'll take a bloody month at least, assuming Customs don't either impound it or lose it. However, I can get my brother in law to send me a set of seals cheaply and quickly. Other than being physically broken, which it isn't, is there anything that can go wrong with one of these other than the seals? The symptoms, which didn't bloody exist before they "fixed" the caliper are that the brakes work, but if you keep your foot on the pedal it gradually sinks to the floor as it loses pressure. Picture FWIW attached.  |
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Post by Deleted on Jul 17, 2016 20:28:00 GMT
p.s. please note, mud splashes *inside* the engine bay! a school run vehicle this ain't. So good brakes will be cool.
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Post by Hofmeister on Jul 17, 2016 20:35:12 GMT
Weeeeeeelllll Are you sure the master cylinder is buggered? If they were dicking around with the calipers, why would they have broken the master cylinder.
Your symptoms can be caused by lots of places int he braking system, however, loads of cars have a sinking brake pedal when you hold your foot on the pedal. The Lancer does it, the Seat before did it as did the Renault. Its very commonplace in ABS and EBA braking systems. Pumping the pedal brings it up again.
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Post by Deleted on Jul 17, 2016 20:41:28 GMT
Yes, it does sink and yes, pumping it brings it back up.
However, it sinks sufficiently quickly that it'll hit the floor *before* you manage to stop at the lights.
You have pedal, pump, abs, pipes, caliper, pads.
Not much else, is there?
Caliper and pipes aren't leaking, system isn't low on fluid, abs works for as long as system has pressure (about 5 seconds).
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Post by Hofmeister on Jul 17, 2016 21:14:47 GMT
Yes, it does sink and yes, pumping it brings it back up. However, it sinks sufficiently quickly that it'll hit the floor *before* you manage to stop at the lights. You have pedal, pump, abs, pipes, caliper, pads. Not much else, is there? Caliper and pipes aren't leaking, system isn't low on fluid, abs works for as long as system has pressure (about 5 seconds). Clearly then its buggered somewhere. I am always prone to look at places that someone has been dicking with it. You say you have a pump, so I assume its a diesel (diesels dont have a vacuum to operate a servo) As you say, you have mentioned all of the bits of a brake system, but you have failed to mention fluid. It aint going anywhere, but it could be contaminated, or even the wrong type or even not brake fluid at all. Get it changed and bled before you go buggering about with the master cylinder. Clearly its not the pump, if that was TU it would mean an overly firm pedal. Your £1000 plus is the price for a brand new toyota cylinder AND servo (booster) You dont need the booster, and I can see oem / rebuilt cylinders for about 100 quid. (not knowing what model you have makes that a generalisation of course) |
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Post by Deleted on Jul 17, 2016 21:26:21 GMT
Firstly is petrol. I don't drive tractors unless I really cannot avoid it.
I mean that lump of metal which is the cylinder that the brake pedal actually works upon, and is the point where the energy stops being transferred by a lump of metal and starts being transferred by fluid.
What is that correctly called?
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Post by Hofmeister on Jul 17, 2016 22:08:34 GMT
The big lump of tin that the pedal is connected to is the servo (yanks call it booster) That provides more push to the pedal than your foot can provide. If that fails the pedal feels too hard. The smaller lump, with the two brakes pipes and the reservoir on top is the cylinder. Thats the bit that could be failing with pressure escaping past it. You can buy either Servo or Cylinder or both together as an assembly.
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Post by Deleted on Jul 17, 2016 23:35:26 GMT
Right, well that cylinder is bloody expensive and difficult to get her. It appears to be $1100 to $1500 US.
And shipping anything substantual through customs here is fraught with challenges.
Assuming it is structurally sound and I buy a new set of seals, then I should be in with a fairly good chance of success.
Yes?
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Post by Hofmeister on Jul 18, 2016 5:39:15 GMT
I guess, but I have no idea whats it s like to change the seals on that, in my mind its fraught with challenges. Is there a DIY guide on Youtube?
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Post by Deleted on Jul 18, 2016 14:37:10 GMT
Mmmm, well local lunatic with a spanner has been dispatched to acquire seals, which apparently are available here.
As an aside, the excuse for the broken cylinder is that with a warped disc the resulting hammering back from the caliper to the foot pedal when braking is what has done for the seals. Perhaps. As always down here its just about feasible enough for me not to be able to dismiss the idea, but not reasonable enough to make me confident.
We shall see.
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Post by Hofmeister on Jul 18, 2016 14:54:39 GMT
Mmmm, well local lunatic with a spanner has been dispatched to acquire seals, which apparently are available here. As an aside, the excuse for the broken cylinder is that with a warped disc the resulting hammering back from the caliper to the foot pedal when braking is what has done for the seals. Perhaps. As always down here its just about feasible enough for me not to be able to dismiss the idea, but not reasonable enough to make me confident. We shall see. Funny it was ok up till the LLWS* started dicking with it. However, with more sober thought there is one very feasible scenario. When changing/removing/whatever the caliper, the brakes will have been bled, and that involved the brake pedal moving in much longer planes than it ever would in normal use. I bet the old seals in the cylinder have turned inside out under such new stress and circumstances. *Local Lunatic With Spanner. |
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Post by Deleted on Jul 18, 2016 15:01:49 GMT
I know. But its so difficult to get to the truth of anything down here. If you're in the UK and somebody is lying to you, they generally try to tell a lie that will not fall apart under examination. And if it does fall apart when probed, the guilt and embarrassment usually shine through.
Down here, and LLWS is just one example, there is no shame in being caught, and no embarrassment in telling an outrageous lie which is clearly untrue. They will stand there and swear black is white unless you can actually *prove* that it is not. And even that might not always be enough.
Its very tiring.
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Post by Deleted on Jul 18, 2016 21:23:15 GMT
I hope your are fluent in automotive Spanish and Spanish suckling through teeth.
Reminds me of a conversation I overheard several years ago between two Israelis in Manchester about a fairly beaten up diesel. Amongst the machine gun discussion in Hebrew, the words 'clutch' and 'injectorim' (plural of injector in Hebrew) were clear. No matter how sophisticated the language sometimes it's easier to grab a word from a foreign language that does it all for you.
Schadenfreude anyone?
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Post by Humph on Jul 19, 2016 18:36:39 GMT
"Toast" works just about anywhere I've found. If hungry, and unable to order anything else, just ask for toast.
Which reminds me of the story of the Italian in Claridges...
Waiter - Good morning sir, what can I get you?
Italian - I want to piss
Waiter - The washrooms are over there sir, to the right.
Italian - No, I want to piss here
Waiter - I'm sorry sir, that won't be possible, I must ask you to go to the washroom.
Italian - I'm not going to the washroom for to piss, what kind of hotel is this? I want to piss here.
Waiter - Sir, please, it's just not possible, please visit the washroom
Italian - How freakin'a difficult is it to bring me to piss?
Waiter - Bring you to piss sir?
Italian - Sure, to piss toast, with butter, and marmalade...how hard is that?
Waiter - Oh I see sir, one moment...coffee sir?
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Post by Hofmeister on Jul 27, 2016 13:26:18 GMT
so? whats the outcome? brakes fixed?
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