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How to: replace the vacuum pump
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MJW409
 


Member Since: 28 Apr 2021
Location: reading
Posts: 3

England 2006 Discovery 3 TDV6 Base 7 Seat Auto Unknown ColourDiscovery 3

Hi, I'm a newbie, had my D3 for 3months and love it - except... Having a few early teething problems. The latest is that the brakes went hard. Took it to my local inde and have been told that I need a new servo, vac pump + pipe totaling £1000. No idea if this is the right cost for this work, any advice welcome. Thanks
  
Post #224269220th Jul 2021 8:42 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10360

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Do you have a pic of the engine top focusing on the driver side
  
Post #224269820th Jul 2021 9:13 pm
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MJW409
 


Member Since: 28 Apr 2021
Location: reading
Posts: 3

England 2006 Discovery 3 TDV6 Base 7 Seat Auto Unknown ColourDiscovery 3

Hi thanks for replying, wasn't sure if I should have mad a new post. I don't unfortunately the car is with the garage. Apparently it's had the recall done on it a long time ago and it's now failed again.
  
Post #224270520th Jul 2021 10:04 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10360

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Whether you need the vac pump is debatable. I guess it ensures the problem doesn’t return. They are £250 and painful to fit.

Cost it about right. £500 parts £500 labour
  
Post #224271020th Jul 2021 11:11 pm
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MJW409
 


Member Since: 28 Apr 2021
Location: reading
Posts: 3

England 2006 Discovery 3 TDV6 Base 7 Seat Auto Unknown ColourDiscovery 3

Many thanks Pete for your help.

I was wondering about the vacuum after reading all the posts I could but as I'm only just getting to know the car and the fact that brakes are the only thing that stops you I think I'm going for peace of mind in getting it all done.

My quote is slightly higher on parts and less on labour so ball park about right from the sounds of it. Will look to see if we can source the parts cheaper, I've found a TWS servo and a Bosch Vacuum which are both quite considerably so. The only thing I'm unsure about is if these are any good.

Again thanks for your earlier help.
  
Post #224272221st Jul 2021 8:19 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10360

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

The bosch pump should be ok.

TRW servo's have been know to have counterfits out there or poor (leaky) batches. So tread carefully there.
  
Post #224274021st Jul 2021 10:14 am
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Switchgear Dan
 


Member Since: 02 Dec 2020
Location: Leicester
Posts: 4

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

“Note that this is a gloves-off bare hands and arms job as there hardly is any space behind the engine, so be prepared to sacrifice some skin”

and

“ Expect this job to take a full day. Not really difficult. Just timetaking and painful”

These two quotes from the original post sum up this job. I can now see the merits of removing the cross over pipe.

You need twliglet arms yet the strength of an Ox

I am now celebrating with cheese and wine…

…until tomorrow when i have to go back outside and finish it off Rolling Eyes
  
Post #22447872nd Aug 2021 9:16 pm
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FidoNick
 


Member Since: 18 Jan 2021
Location: Purton, Wiltshire
Posts: 120

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Finnish wrote:
Hello and thanks for great information even though it's a decade ago!
Found this old thread when looking for information about oil in break servo.
My 06 D3 was in for a "recall"(?) for this problem in 2010 and has this new pipes with valve on.
I don't know how much parts else there was replaced.
Two weeks ago I heard this gurgling sound when breaking.
Sucked out 2 dl oil from the break servo yesterday and now everything seems to be good.
Great brakes and no problem(?).
My question is; are there need for replacing the vacuum pump, break servo and main brake cylindre?
How to figure out, in case?
And, do anyone know if the oil filling of the break servo is something that goes over years or is it "sudden"? Is it maybe the valve on the pipe that is broken or is it of course another problem - with the vacuum pump?
Very happy for quick response if anyone sees this!


Hi Finnish. I've been trying to figure out what's required to suck the oil out - perhaps you can give some guidance? It'll be a few weeks before I can get the car in for replacement parts, so I just want to help it along until then. Do you (or anyone else) have any advice please? I've not been able to find the details yet.

Thanks! Bow down
  
Post #22942003rd Jun 2022 11:26 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10360

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Well a large ish medical type syringe with a pipe on the end of it


https://www.ebay.co.uk/itm/Large-Medical-S...635-2958-0

https://www.ebay.co.uk/itm/Plastic-Reusabl...635-2958-0
  
Post #22942083rd Jun 2022 2:03 pm
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FidoNick
 


Member Since: 18 Jan 2021
Location: Purton, Wiltshire
Posts: 120

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Thanks Pete. Errr.. Where do I stick it? Embarassed

I mean - where is the best (only?) place I can suck the oil out? Maybe there's a market for an after-market drain valve Idea
  
Post #22942113rd Jun 2022 2:12 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10360

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I assume you are trying to drain out the servo.

You remove the vacuum pipe between the servo and vacuum pump
Using wd40 or similar and large flat blade screwdriver

Remove it at the servo end

You then usually use a white cable tie as
a dip stick and see if oil is present.

Then put the pipe and syringe in to suck out oil
  
Post #22942293rd Jun 2022 5:05 pm
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dutchviking
 


Member Since: 07 Oct 2011
Location: Oslo
Posts: 54

Norway 2007 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

I guess the whole point of the recall was to get the servo drum replaced (and the rest of the parts) and not only to remove the oil

As the engine oil collects at the bottom of the drum can't see how it effect the main brake cylinder or membrane inside the drum, however replacing these parts did make the braking feel better / less hard on the pedal. Since the design of the vacuum pump did not change it is debatable if it really needs to be replaced. However the non return valve hose got replaced/upgraded as part of Service bulletin P017.

I would therefore replace the hose, and as the supercharged Range Rover Sport servo drum / brake booster slides perfectly into place, would choose that as alternative. Bigger is better Smile

However upgrading the front calipers to the Brembo 6 pots REALLY improved braking.
  
Post #22946967th Jun 2022 6:41 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10360

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Yeah I don't understand how the oil impacts braking in the short term, but it does seam to!
They only replace the servo if oil is inside it

Fitting the larger SC servo is part of the recall. (maybe due to availability)
  
Post #22946997th Jun 2022 7:01 pm
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ChrisLR3
 


Member Since: 02 Jan 2020
Location: Belgium
Posts: 11

Belgium 2009 Discovery 3 TDV6 HSE Auto Galway GreenDiscovery 3

This is a very intresting topic!
I also have vacuum issues: poor booster capacity on low Revs.
I also hear an ticking/rattling noice (frquency follows the Revs).
Could it be the vacuum pump that needs replacement?
Looking from the underside of the car I see a light oil leak at the vacuumpump.
Another question: Brakebleeding with the help of the IID Tool? How does this work or where can I find the info on this.
Many thanks,
Chris
 IIDTool BT G3  
Post #23101838th Oct 2022 10:26 am
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