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X Brake servicing/overhaul... Simon? :)


Mr Noisy

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hey chaps

so ive got an x brake of a couple years vintage and it has been grand

the rest of the car hasnt been so grand mind so if had the brake on and off various times with transmission changes etc and i have noted that each time i reinstall i am adjusting the cable up further and further

i use the centre hole on the arm and am now more or less at the end of my adjustment, ie, the arms is substantially rotated at rest position already

i assume this is simply due to pad wear

however, as an x brake noob i thought it worth a post to see what y'all think - maybe simon could even advise me from his point of view!!

i did think perhaps my cable was stretching but i have no lack of braking power once adjusted, but then before too long i need to adjust, rinse and repeat

it has only come to light now as 3 clicks is no longer sufficient for steep hills, i am out of cable/caliper travel i think at that, so i reckon the pads are likely to blame

any help appreciated!

cheers, sam

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From my experience they are a bit heavy on pads, however they are simple to change

Also is you read the instruction manual this is a page about course adjustment of the calliper arm, this works as I did it the other day,

This is quite easy todo in situ on a disco but I have no idea about a defender

I also recently fitted a set of non x eng supplied brake pads, and they were actually fractionally too thick to fit in the calliper and disc, but that was easy to fix

Dan

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Thanks for the part numbers chaps, if I'm honest I have no quarms buying them off Foundry anyway and supporting them/X-Eng etc

I will pull the caliper tomorrow, if it simply appears to be thin pads it'll be a nice easy fix, I don't know what function the repair kit has but at 15 quid it's no great shakes either

Thanks :)

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I hate to suggest this, and mean no disrespect, but are you sure you are adjusting your calliper correctly? I am by no means an expert on X-brakes, but I have one fitted to my 90 (fitted with automatic gearbox). I rarely use the brake (preferring 'park'), and perhaps that has some bearing on it, though no amount of static use should cause wear to the pads AFAIK. I bought the car with the brake already fitted, but in the tens of thousands of miles I have done in the car I have not needed to adjust the handbrake, nor have I noticed any marked difference in how it applies - when I do use it. Just a thought.

FWIW, the guys at Foundry4x4 are great.

Chris

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...though no amount of static use should cause wear to the pads AFAIK...

That's what I was thinking, although perhaps as muck gets induced there is a mild grinding effect? Or maybe lots of hill starts for those non-automatic drivers among us?

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I hate to suggest this, and mean no disrespect, but are you sure you are adjusting your calliper correctly? I am by no means an expert on X-brakes, but I have one fitted to my 90 (fitted with automatic gearbox). I rarely use the brake (preferring 'park'), and perhaps that has some bearing on it, though no amount of static use should cause wear to the pads AFAIK. I bought the car with the brake already fitted, but in the tens of thousands of miles I have done in the car I have not needed to adjust the handbrake, nor have I noticed any marked difference in how it applies - when I do use it. Just a thought.

FWIW, the guys at Foundry4x4 are great.

Chris

I don't mean to tell you how to drive, and maybe i am wrong here, but iv'e always been told, and felt from the massive clunk, that leaving an auto to rest against park is really bad for the mechanism when you go to release it. whenever i drive an auto i always apply the handbrake in neutral, let the vehicle roll up the slack then select park.

if the pads are rattling it would suggest to me that they are able to contact the disk more often under driving conditions which could be a cause for excessive wear.

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Hi chaps

Not had chance to get this off yet but I have had a look

The moving pad isn't too bad but the static pad has a couple mm wear in it

You can see on the rubber slides where it has moved to allow for this wear

Anyway

This car only gets used off road so to speak and mud is a big deal

I do rear pads in like 500 miles sometimes just because the mud rips the pads to pieces

I bet the x brake is no more than 2000 miles into its life over maybe 3 years, but it has clearly, steadily worn

Anyway hoping tomorrow to take it off and I'll get some pics

Reckon it's just worn tbh!

Not gonna take offence at all by the way if anyone wants to school me on how to adjust this bugger but tbh I thought it was a pretty simple affair!

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Sorry, only just seen the thread!

For the best combination of pad life and stopping ability, adjust the brake to fully apply with six clicks on the handbrake lever.

If you adjust it tighter than this, it just wears the pads (and adjusts itself) for about six clicks - so you may as well save the pad wear and start with six!

I'm only on my second set of pads (2 years ago) on the second X-Brake ever made! 10 years and about 60k miles on the first set!

If you do run out of adjustment on the cable, you can rotate the lever on the caliper (clockwise looking from the rear of the truck). The lever sits on a spline with 12 positions. If you un-screw the bolt on the lever by 6 turns, the lever will spring up and sit on a shoulder allowing it to be rotated. Rotate 1 spline and re-tighten six turns. If you remove the bolt, the lever, washers and spring will all spring apart and you'll spend the afternoon looking for the bits! How do I know this?!

This will reset the adjustment on the cable back to zero and give you the same life as you had in the previous rotational position. I suspect that at least 50% of orders for new pads don't actually need them if they did this.

Remember to reset the lever when you do fit new pads!

The pads start life at 3.125mm thickness - again people look at pads that are say 2mm thick and assume they are worn out - where really they are barely worn in!

If you need more help - even if it takes a while, I'll always respond!

Si

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I don't mean to tell you how to drive, and maybe i am wrong here, but iv'e always been told, and felt from the massive clunk, that leaving an auto to rest against park is really bad for the mechanism when you go to release it. whenever i drive an auto i always apply the handbrake in neutral, let the vehicle roll up the slack then select park.

Thanks. Mine does not make a massive clunk when selecting 'drive' from 'park', though I very rarely park on a hill of any consequence. When I do, is when I use the handbrake too!

Chris

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Simon!

Many thanks for that :D

I will attempt a lever rotation.

Remember of course I am on discovery 200 lever and I "think" they have less clicks available due to the constraints of the console aperture, but, I will see what's what

There is certainly lots of thickness on the pads, just as above, I think I am struggling to apply it.

Cheers, Sam!

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Well :)

I rotated the arm 2 notches actually, and then moved up to the top hole on the arm instead of the Middle hole

So I have now rescued my cable travel, and I am able to apply much more handbrake effort, all down to a simple adjustment, thanks simon!!

The moving pad is hardly worn but the fixed pad certainly is, I've probably got around 1mm until the caliper body contacts the disc

But now with new-found adjustment methods I can fettle the brake to keep it tip-top whatever pad thickness I have.

Great! :D

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Thanks simon

However I must say, if the static pad is wearing more than the moving pad, it implies that the caliper is quite happy to move I would have thought!

Anyway after stripping it down a bit last night and removing all pad preload, I could tell the caliper was quite happy to move on the rubbers

I must say I was surprised as I expected due to the design of the caliper that if anything the moving pad would have worn more

I think maybe the static pad has worn from always being in contact with the disc whereas the moving pad is forcibly backed off

Anyway I'm back on the road and all is well, and when it does become time for pads I'll know much better what to do!

Cheers! :D

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