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Author Topic: Brake bleeding sequence  (Read 137 times)

Offline tacochewy

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  • Posts: 14
  • Thanked: 0
  • Model: Sharan Mk2
  • Spec: tdi sport
  • Region: South East
Brake bleeding sequence
« on: September 05, 2020, 12:13:08 PM »
Hi
Does anyone know the sequence for bleeding brakes in my 2005 VW Sharan tdi sport

I will be using a gunson pressure bleeder to replace brake fluid, also is the anything special I should be doing concerning the ABS module, I assume use low pressure to push fluid through.

thanks

Offline SirDavidAlhambra

  • Sir David Alhambra.
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  • Posts: 555
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  • Model: Alhambra Mk2 Auto
  • Spec: 2006 1.9 Tdi auto
  • First Name: Dave
  • Region: South East
  • Country: United Kingdom
Re: Brake bleeding sequence
« Reply #1 on: September 05, 2020, 12:24:14 PM »
Not sure, personally

 [NE1]
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all.

Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

Offline johnnyroper

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  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
  • Region: South West
  • Country: United Kingdom
Re: Brake bleeding sequence
« Reply #2 on: September 05, 2020, 03:04:49 PM »
When I did mine I just started furthest away from master first and didnít do anything special. Only thing I did was suck as much old fluid out of reservoir as possible using a hand oil suction pump to cut down bleeding time.

Itís an awkward place to get to res though, I concoted a funnel and hose assembly to get down to it to top fluid up

Donít forget to bleed clutch aswell as that has equally as old and dirty fluid in the line

Offline SirDavidAlhambra

  • Sir David Alhambra.
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  • Posts: 555
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  • Model: Alhambra Mk2 Auto
  • Spec: 2006 1.9 Tdi auto
  • First Name: Dave
  • Region: South East
  • Country: United Kingdom
Re: Brake bleeding sequence
« Reply #3 on: September 05, 2020, 03:56:34 PM »
How often should I change my brake fluid please and is it ok to do it by just sucking out the stuff in the reservoir and filling it up again, thank you
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all.

Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

Offline johnnyroper

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  • Posts: 2945
  • Thanked: 148
  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
  • Region: South West
  • Country: United Kingdom
Re: Brake bleeding sequence
« Reply #4 on: September 05, 2020, 04:12:08 PM »
Every 2 years and no as you are only replacing some of the fluid in res as not all will come out and you have old fluid left in lines and slave cylinders. You still need to crack all nipples off and bleed properly even if replacing whatís in reservoir

Offline brianh

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  • Posts: 803
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  • Model: Galaxy Mk2
  • Spec: 2001 2.3 Ghia LPG
  • First Name: Brian
  • Region: South East
  • Country: United Kingdom
Re: Brake bleeding sequence
« Reply #5 on: September 05, 2020, 04:23:54 PM »
Ford TIS doesn't specify anything particually for bleeding it, only note for vehicles with ABS is to disconnect the battery ground cable. I'd suspect as long as you aren't letting all the fluid out (if its just a routine change rather than replacing the abs module for example) then you should be ok.

Agree with the comment about access to the reservoir though, easier if you take the scuttle panel out but still difficult to access. Can be worth having a half full bottle to pour from as you can lay it down a lot flatter than a full one.

Do the clutch as the last one, the take off for it is higher than the rest of the system.

There may be an option to bleed the abs in VCDS somewhere - not sure on that point.

Offline SirDavidAlhambra

  • Sir David Alhambra.
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  • Posts: 555
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  • Model: Alhambra Mk2 Auto
  • Spec: 2006 1.9 Tdi auto
  • First Name: Dave
  • Region: South East
  • Country: United Kingdom
Re: Brake bleeding sequence
« Reply #6 on: September 05, 2020, 05:52:04 PM »
My brake fluid hasnít been changed for 3 years!! I am going to get it done asap
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all.

Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

Offline tacochewy

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  • Posts: 14
  • Thanked: 0
  • Model: Sharan Mk2
  • Spec: tdi sport
  • Region: South East
Re: Brake bleeding sequence
« Reply #7 on: September 07, 2020, 06:49:05 PM »
Thanks for all your advice on this.

I have just completed the job, all seemed to go ok.

I managed to avoid having to remove scuttle panel but I did remove airbox lid. I used a massive 100mm syringe with tube attached to suck some old fluid out and then attached gunson pressure bleeder to lid of reservoir.

 Used a low pressure on the bleeder, starting with back right, then back left, then front right and front left, finally clutch.
It was last done 3 years ago and the stuff that came out was beginning to get dirty and green, so worth doing.

Chris

Offline SirDavidAlhambra

  • Sir David Alhambra.
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  • Posts: 555
  • Thanked: 10
  • Model: Alhambra Mk2 Auto
  • Spec: 2006 1.9 Tdi auto
  • First Name: Dave
  • Region: South East
  • Country: United Kingdom
Re: Brake bleeding sequence
« Reply #8 on: September 07, 2020, 08:55:41 PM »
What causes it to go green, was it mould etc
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all.

Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

Offline Silverback

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  • Posts: 12
  • Thanked: 3
  • Model: Galaxy Mk3 Auto
  • Spec: 2012 Titanium X
  • Region: East Midlands
  • Country: United Kingdom
Re: Brake bleeding sequence
« Reply #9 on: September 07, 2020, 09:38:25 PM »
Usually you should do furthest from master cylinder first when bleeding, so r/n/s, r/o/s , f/n/s and f/o/s.
The scuttle undertray is quite easy to remove just three m6 bolts and a bit of muscle, getting it back in is a bit trickier . but removing it makes access to the resevoir much easier especially if you remove the air box.
The scuttle undertray is the fibre material bit, you hav eto pull it out airbox end first then get it over the expansion tank.
I use a sealey pressure bleeder, just pump it up to pressure (20psi) after filling with some DOT4, especially useful if your wife of 36 years will no longer come out and pres the pedal up and down.......

Offline tacochewy

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  • Posts: 14
  • Thanked: 0
  • Model: Sharan Mk2
  • Spec: tdi sport
  • Region: South East
Re: Brake bleeding sequence
« Reply #10 on: September 07, 2020, 11:02:10 PM »
What causes it to go green, was it mould etc
I'm not sure why it takes on a green tinge. I've seen this before when changing brake fluid and always assumed that the previous fluid began life that colour. But on this occasion I know that the fluid from the previous change was originally straw colour, so I assume the green comes with age, I don't think it's mould.

Offline johnnyroper

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  • Posts: 2945
  • Thanked: 148
  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
  • Region: South West
  • Country: United Kingdom
Re: Brake bleeding sequence
« Reply #11 on: September 07, 2020, 11:39:30 PM »
Moisture in the fluid and quite possibly from copper brake lines if they have been replaced anywhere on car in the last.

 

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