Replacing rear pads and discs. Any traps for the unwary?

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14th August 2018, 10:58 PM
Slunnie

To the OP. Despite this discussion, check your master cylinder res doesn't overflow as you push the pistons back. Quite a few people have recommended this in this thread - there is value in it. If it causes no probs then good. If it does try to overflow then you've caught it before it does.
14th August 2018, 10:59 PM
Tins

Quote:

Originally Posted by rick130

I'm in the "the low brake fluid alarm is ****ing me off even though the level has only dropped 1/4" so I top it off the M/C" camp. [biggrin]

Good to know. Pop you into the uninterested box. Works for me.
14th August 2018, 11:24 PM
Tins

Quote:

Originally Posted by Slunnie

To the OP. Despite this discussion, check your master cylinder res doesn't overflow as you push the pistons back. Quite a few people have recommended this in this thread - there is value in it. If it causes no probs then good. If it does try to overflow then you've caught it before it does.

Slunnie, can you please point out how the M/Cyl will overflow if the M/Cyl has not been topped up?? Seriously, can you? Why woild you? This is the crux of this. The fluid is a constant, it does not change. It beggars belief that people don't see this. Hydraulics is a constant. It doesn't change, and it can't. That's what " constant" means, in this context.

There is a constant number of fluid in the system. This does not change, no matter how many smart(arsed) people are involved. There is a constant, a number, a volume. This is a formula, based on the volume of the various cylinders and the pipes connecting them. This formula is available for those to choose to read it. However, it relies on the oldest of them all:

"Water is incompressible".

Hmm, is it though? Yes. For our purposes, it most certainly is. And that concept is the whole idea of hydraulics, something a certain smartarse from "Sydney" would do well to understand. He won't though. None of them learn.
15th August 2018, 12:39 AM
Slunnie

Quote:

Originally Posted by johntins

Slunnie, can you please point out how the M/Cyl will overflow if the M/Cyl has not been topped up?? Seriously, can you? Why woild you? This is the crux of this. The fluid is a constant, it does not change. It beggars belief that people don't see this. Hydraulics is a constant. It doesn't change, and it can't. That's what " constant" means, in this context.

There is a constant number of fluid in the system. This does not change, no matter how many smart(arsed) people are involved. There is a constant, a number, a volume. This is a formula, based on the volume of the various cylinders and the pipes connecting them. This formula is available for those to choose to read it. However, it relies on the oldest of them all:

"Water is incompressible".

Hmm, is it though? Yes. For our purposes, it most certainly is. And that concept is the whole idea of hydraulics, something a certain smartarse from "Sydney" would do well to understand. He won't though. None of them learn.

You're banging on like a fool and I'm really not interested in the petty rubbish arguements that you're going on with here tonight. Clearly you haven't experienced it, clearly you don't get it, seemingly you're trying to drown out the input of others in favour of your own which is not necessarily always correct, clearly others have worked out this issue, and I stated it already. You have a brain, you can work it out just like everybody else can and I have not stated that the MC hasn't been topped up. Yes I have read your comments about topping it up, but clearly you have not read the comments of others who have experiences other than yours which lead to this situation.

Let it go and stop hogging and destroying the thread.
15th August 2018, 12:52 AM
Tins

Quote:

Originally Posted by Slunnie

You're banging on like a fool and I'm really not interested in the petty rubbish arguements that you're going on with here tonight. Clearly you haven't experienced it, clearly you don't get it, seemingly you're trying to drown out the input of others in favour of your own which is not necessarily always correct, clearly others have worked out this issue, and I stated it already. You have a brain, you can work it out just like everybody else can and I have not stated that the MC hasn't been topped up. Yes I have read your comments about topping it up, but clearly you have not read the comments of others who have experiences other than yours which lead to this situation.

Let it go and stop hogging and destroying the thread.

Well, I guess that lets me know where you stand. Did you actually argue my point, or could you not be bothered?

There is a quite a rant in there, but I fail to see an argument. I stated my position clearly, and people have the opportunity to disagree. That is the point of this forum.

Clearly???? I worked in the industry for 40 years. What is it I don't see clearly?? I read all comments, Slunnie. Did you read mine???

Are you having a bad day? Or did you have a real problem with me? I'm here, and have no problem if you want to pick a fight. Seems like that's your agenda.

I suggest that you let it go, and grow up a little. I'll still be here.
15th August 2018, 05:07 AM
Andrew D

Hopefully everyone has had a good night sleep and is feeling refreshed.

For you John YouTube

Grab one
15th August 2018, 05:20 AM
LRJim

Agreed hopfully he goes back and has a look at all the **** he wrote......
15th August 2018, 05:29 AM
rangieman

Quote:

Originally Posted by Andrew D

Hopefully everyone has had a good night sleep and is feeling refreshed.

For you John YouTube

Grab one

As Slunnie said :soapbox:
Let It Go [wink11]
15th August 2018, 07:47 AM
trout1105

As the brake pads wear the level in the brake reservoir will go down so most people will top it up.
When new pads are fitted the pistons in the brake calipers are pushed back in to allow the new pads to be fitted, This usually makes the brake reservoir overflow.
This is the scenario that Slunnie is refering to and is usually the case when new pads are fitted.
So unless you Never keep your brake reservoir topped up which is a very dangerous thong to do the brake reservoir WILL overflow when a new set of pads are fitted.
15th August 2018, 07:57 AM
trout1105

Quote:

Originally Posted by johntins

There should be no need to draw off any brake fluid, unless some muppet has topped it up. Topping up is unnecessary, and can introduce contaminents. Brake fluid levels fall as the pads wear ( normal ) or if there is a leak, in which case you should stop driving it until it is fixed.

That said, this is a really good opportunity to replace the brake fluid completely, something well worth doing.

I completely disagree with that statement.
The brake fluid MUST be topped up to the reccomend level as the pads wear, Not to do so is just plain stupid and dangerous.
Part of ANY pre start check includes making sure that ALL the fluid levels are correct and if the brake fluid level is low you top it up.
A "muppet" is someone who ignores a low level in a brake reservoir and doesnt top it up, Not the other way around[thumbsupbig]

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