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#1 2025-01-03 13:34:26

woodbine
Member
From: Bristol, UK
Registered: 2018-11-01
Posts: 267

What Makes Rear Auto Brake Adjusters Work?

Recently replaced everything on rear brakes on my Scudo 2.0 JTD 2004, except the drums. Bought a Ferodo kit that came pre-assembled. Just wanted to ask what makes the adjusters take up the gap between shoes and drums? Some systems just normal braking driving forwards seems to activate them, others it's either braking when reversing or applying the handbrake that makes the adjusters advance.

On the picture of the adjuster location below, you can see one end of the adjuster locates into the handbrake lever arm. Is this just to locate the adjuster, or does applying the handbrake make the adjuster work. Thanks in advance for any help.

Scudo-Brake-Adjuster.jpg


Fiat Scudo 2004 (54) 2.0 Jtd SX Dynamic Van

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#2 2025-01-03 19:10:06

Eddie Honda
Member
Registered: 2023-08-27
Posts: 27

Re: What Makes Rear Auto Brake Adjusters Work?

Applying the handbrake so the handbrake lever moves to the left squeezes the sprung side plates to ratchet round to the next click.

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#3 2025-01-03 19:50:01

OAT
Member
From: Borders/Dales
Registered: 2017-01-03
Posts: 961

Re: What Makes Rear Auto Brake Adjusters Work?

I don't remember the details but do remember a garage having difficulties with self adjusting on mine. 
Turned out to be a problem with the brake balancer/compensator.

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#4 2025-01-04 00:47:51

woodbine
Member
From: Bristol, UK
Registered: 2018-11-01
Posts: 267

Re: What Makes Rear Auto Brake Adjusters Work?

Thanks to Eddie and OAT. That video makes sense now. Could try to explain it with a thousand words, but a video does the job in seconds. Quite clever, but when you you see it in action - crude and effective.

Merry New Year to all.


Fiat Scudo 2004 (54) 2.0 Jtd SX Dynamic Van

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#5 2025-01-04 02:02:36

kenbw2
Administrator
From: Preston
Registered: 2017-11-26
Posts: 1,430

Re: What Makes Rear Auto Brake Adjusters Work?

woodbine wrote:

crude and effective

Good ol' pre-2000s mechanical technology


2000 Citroen Dispatch 1.9TD XUD9 Camper Conversion
1999 Citroen Dispatch 1.9D DW8 Disassembled Camper Conversion
1996 Peugeot 806 1.9TD XUD9 Spare vehicle
1998 Citroen Synergie 1.9TD XUD9 Snapped timing belt

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#6 2025-01-04 02:03:21

kenbw2
Administrator
From: Preston
Registered: 2017-11-26
Posts: 1,430

Re: What Makes Rear Auto Brake Adjusters Work?

Doing the rear drums is one job I'm glad to have done myself, and swear to never ever do again

Once in a Euro Car parts car park on a cold February night was once enough


2000 Citroen Dispatch 1.9TD XUD9 Camper Conversion
1999 Citroen Dispatch 1.9D DW8 Disassembled Camper Conversion
1996 Peugeot 806 1.9TD XUD9 Spare vehicle
1998 Citroen Synergie 1.9TD XUD9 Snapped timing belt

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#7 2025-01-04 15:23:53

Eddie Honda
Member
Registered: 2023-08-27
Posts: 27

Re: What Makes Rear Auto Brake Adjusters Work?

woodbine wrote:

but a video does the job in seconds.

Rare though to find one without the annoying music / loads of  waffle / presenter gurning in-camera.  smile

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#8 2025-01-08 01:19:11

woodbine
Member
From: Bristol, UK
Registered: 2018-11-01
Posts: 267

Re: What Makes Rear Auto Brake Adjusters Work?

kenbw2 wrote:

Doing the rear drums is one job I'm glad to have done myself, and swear to never ever do again

Once in a Euro Car parts car park on a cold February night was once enough

Didn't find it too bad, even though had to do the cylinders as well as they were both leaking. Bought a Ferodo kit with shoes, springs, adjusters which were all pre-assembled, so made the job a fair bit easier. Cylinders were included in the kit too. Must admit if I had just been changing just the shoes it would have been a lot more of a faff having to fit the springs myself.

Personally, I've done far worse jobs and at least it can all be done without lying on your back from underneath. Or was it just because you had to visit ECP that made it so nightmareish?     smile

Last edited by woodbine (2025-01-08 01:20:22)


Fiat Scudo 2004 (54) 2.0 Jtd SX Dynamic Van

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#9 2025-01-08 01:55:58

kenbw2
Administrator
From: Preston
Registered: 2017-11-26
Posts: 1,430

Re: What Makes Rear Auto Brake Adjusters Work?

woodbine wrote:

Bought a Ferodo kit with shoes, springs, adjusters which were all pre-assembled, so made the job a fair bit easier. Cylinders were included in the kit too. Must admit if I had just been changing just the shoes it would have been a lot more of a faff having to fit the springs myself.

That was exactly what I had to do with freezing cold wet fingers. Not a fun time to be doing it

woodbine wrote:

Or was it just because you had to visit ECP that made it so nightmareish?     smile

In can do you one worse. It was ECP in Keighley


2000 Citroen Dispatch 1.9TD XUD9 Camper Conversion
1999 Citroen Dispatch 1.9D DW8 Disassembled Camper Conversion
1996 Peugeot 806 1.9TD XUD9 Spare vehicle
1998 Citroen Synergie 1.9TD XUD9 Snapped timing belt

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#10 2025-01-09 01:29:39

woodbine
Member
From: Bristol, UK
Registered: 2018-11-01
Posts: 267

Re: What Makes Rear Auto Brake Adjusters Work?

kenbw2 wrote:
woodbine wrote:

Or was it just because you had to visit ECP that made it so nightmareish?     smile

In can do you one worse. It was ECP in Keighley

Keighley!!     yikes

I feel your pain!    wink

Last edited by woodbine (2025-01-09 01:30:05)


Fiat Scudo 2004 (54) 2.0 Jtd SX Dynamic Van

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#11 2025-01-09 01:39:08

woodbine
Member
From: Bristol, UK
Registered: 2018-11-01
Posts: 267

Re: What Makes Rear Auto Brake Adjusters Work?

Eddie Honda wrote:

Applying the handbrake so the handbrake lever moves to the left squeezes the sprung side plates to ratchet round to the next click.

While I was throwing away the old shoes, springs, etc from where I had abandoned them on the garage floor, I pulled the old adjusters out of the shoes and removed the springs. Having a play around with them, I confirm they work exactly as in your video, ie. as the handbrake lever in drum moves when handbrake applied, the adjuster gets squeezed and winds the wheel around one click with a point on the spring steel actually turning the wheel .

In fact I'm glad I replaced the adjusters along with everything else. I hadn't realised when I did the job a few weeks ago, that one of the adjusters was actually broken. When I removed it from where it locates between the shoes, the threaded part fell out of the body of the adjuster. The spring on the back of the adjuster was broken, and as such the adjuster wouldn't have been able to adjust anything on that drum.

Last edited by woodbine (2025-01-09 17:39:36)


Fiat Scudo 2004 (54) 2.0 Jtd SX Dynamic Van

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#12 2025-01-09 01:57:21

kenbw2
Administrator
From: Preston
Registered: 2017-11-26
Posts: 1,430

Re: What Makes Rear Auto Brake Adjusters Work?

woodbine wrote:
Eddie Honda wrote:

Applying the handbrake so the handbrake lever moves to the left squeezes the sprung side plates to ratchet round to the next click.

While I was throwing away the old shoes, spring, etc from where I had abandoned them on the garage floor, I pulled the old adjusters out of the shoes and removed the springs. Having a play around with them, I confirm they work exactly as in your video, ie. as the handbrake lever in drum moves when handbrake applied, the adjuster gets squeezed and winds the wheel around one click with a point on the spring steel actually turning the wheel .

In fact I'm glad I replaced the adjusters along with everything else. I hadn't realised when I did the job a few weeks ago, that one of the adjusters was actually broken. When I removed it from where it locates between the shoes, the threaded part fell out of the body of the adjuster. The spring on the back of the adjuster was broken, and as such the adjuster wouldn't have been able to adjust anything on that drum.

Ah that must be how the self adjusting clutch cable works too


2000 Citroen Dispatch 1.9TD XUD9 Camper Conversion
1999 Citroen Dispatch 1.9D DW8 Disassembled Camper Conversion
1996 Peugeot 806 1.9TD XUD9 Spare vehicle
1998 Citroen Synergie 1.9TD XUD9 Snapped timing belt

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#13 2025-01-09 07:01:19

Eddie Honda
Member
Registered: 2023-08-27
Posts: 27

Re: What Makes Rear Auto Brake Adjusters Work?

woodbine wrote:

Having a play around with them, I confirm they work exactly as in your video,

I hadn't realised when I did the job a few weeks ago, that one of the adjusters was actually broken.

Thanks for the update.

I can never remember how they actually work apart from the fact that at some point...they don't.  lol

Having always had old tat, I'm more familiar with getting the brake adjuster spanner out and turning the old Girling square pegs.

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#14 2025-01-09 17:38:14

woodbine
Member
From: Bristol, UK
Registered: 2018-11-01
Posts: 267

Re: What Makes Rear Auto Brake Adjusters Work?

Eddie Honda wrote:
woodbine wrote:

Having a play around with them, I confirm they work exactly as in your video,

I hadn't realised when I did the job a few weeks ago, that one of the adjusters was actually broken.

Thanks for the update.

I can never remember how they actually work apart from the fact that at some point...they don't.  lol

Having always had old tat, I'm more familiar with getting the brake adjuster spanner out and turning the old Girling square pegs.

You're welcome. Know what you mean about manual adjusters. On my MK1 Carlton it had manual adjusters - dead easy job every now and again. Least you know where you are with them. But the manufacturers insist on over complicating things - whether the new technology works or not. Still got my square hole brake adjuster spanner in the tool box, just in case. It's gathering dust, next to the feeler gauges.


Fiat Scudo 2004 (54) 2.0 Jtd SX Dynamic Van

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#15 2025-01-27 23:38:35

Pathfinder100
Member
From: South Yorkshire
Registered: 2021-07-19
Posts: 275

Re: What Makes Rear Auto Brake Adjusters Work?

kenbw2 wrote:

Doing the rear drums is one job I'm glad to have done myself, and swear to never ever do again

Once in a Euro Car parts car park on a cold February night was once enough

Is it really that bad?  My back brake shoes sound low (scraping noise when braking) so will be looking to take the hub off and replace them probably sooner rather than later.  I had the other hub off last year and I had a similar noise, but their was a load of compound still on the shoes and a load of rust on the inside of the hub.  It worked fine after a scour with a wire brush.  I didn't take everything apart.


Peugeot Expert 2006 2.0 Hdi 110 RHZ / DW10BTED+ 5 Speed Manual

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#16 2025-01-29 23:07:42

kenbw2
Administrator
From: Preston
Registered: 2017-11-26
Posts: 1,430

Re: What Makes Rear Auto Brake Adjusters Work?

Pathfinder100 wrote:
kenbw2 wrote:

Doing the rear drums is one job I'm glad to have done myself, and swear to never ever do again

Once in a Euro Car parts car park on a cold February night was once enough

Is it really that bad?  My back brake shoes sound low (scraping noise when braking) so will be looking to take the hub off and replace them probably sooner rather than later.  I had the other hub off last year and I had a similar noise, but their was a load of compound still on the shoes and a load of rust on the inside of the hub.  It worked fine after a scour with a wire brush.  I didn't take everything apart.

I think it's mostly bad when it's a wet cold February evening

It's not the worst job ever. it's just fiddly with all the small parts that you need to remember where they go and how they fit together, and I seem to remember there being some annoying spring mechanism or something that was a bit to get to fit

I'm glad I did it once. I'm not sure I'd be glad to do it again


2000 Citroen Dispatch 1.9TD XUD9 Camper Conversion
1999 Citroen Dispatch 1.9D DW8 Disassembled Camper Conversion
1996 Peugeot 806 1.9TD XUD9 Spare vehicle
1998 Citroen Synergie 1.9TD XUD9 Snapped timing belt

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#17 2025-01-30 00:14:16

Pathfinder100
Member
From: South Yorkshire
Registered: 2021-07-19
Posts: 275

Re: What Makes Rear Auto Brake Adjusters Work?

I need a dry day to do it and i'm very tempted to overhaul both sides. The pistons weren't great on the passenger side when I took it apart, but it still passed MOT last year without any issue.  I do have the shoes and the bits you need to do an overhaul, so maybe I will do that.  But might do the front pads first as they are super easy.  I think the bit that worries the most is the handbrake cable.  I think if you overhaul you have to readjust it, or I at least think I read that somewhere.


Peugeot Expert 2006 2.0 Hdi 110 RHZ / DW10BTED+ 5 Speed Manual

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