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taffrican

Member Since: 14 Jan 2011
Location: Living room
Posts: 622

Brake servo

Evening gents, I’ve got a problem with my brakes, they’ve been pretty bad for a while and today they are virtually non existent, I have to put everything into the pedal to come to a gradual halt. I done the pedal test, press hard, turn car on and start and no change, the pedal is supposed to ease slightly on startup, nothing, I also removed the vacuum pipe and plenty of vacuum there, if I press my finger over the pipe I can heard the engine change tune, sounds like an aircon was being turned on, I put the pipe back onto the servo and the engine tone didn’t change, which leads me to think the servo is shot, any opinions on this?
And if the servo is leaking does anyone have experience on a suitable replacement, I see the LR ones are north of £400, then there’s the £180 ones, then the paddocks aftermarket which vary between £60-£120….

Thanks in advance for any advise.
Mike Optimists say the glass is half full..
Pessimists say the glass is half empty..
Engineers say the glass is twice the size it needs to be!

5th Jan 2022 8:14pm

Oldowner

Member Since: 26 Dec 2018
Location: South west
Posts: 603

2007 Defender 90 Puma 2.4 HT Aintree Green

Almost certainly servo cracked near to master cylinder mounting studs. With engine running spit near the mounting studs and watch the spit disappear.

TRW servos are good and we’re relatively cheap.

5th Jan 2022 9:16pm

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5423

2006 Defender 110 Td5 USW Zermatt Silver

I think if you spray servo with thin oil, like WD40, it shows the cracks better.

Keep us informed.

5th Jan 2022 9:59pm

taffrican

Member Since: 14 Jan 2011
Location: Living room
Posts: 622

Thanks chaps, I’ll update next week, back into the funny farm (work) tomorrow

so won’t get a chance until then

Optimists say the glass is half full..
Pessimists say the glass is half empty..
Engineers say the glass is twice the size it needs to be!

5th Jan 2022 10:03pm

taffrican

Member Since: 14 Jan 2011
Location: Living room
Posts: 622

hank wrote:
Whoops sorry wrong thread

I did think so

Optimists say the glass is half full..
Pessimists say the glass is half empty..
Engineers say the glass is twice the size it needs to be!

7th Jan 2022 7:10pm

taffrican

Member Since: 14 Jan 2011
Location: Living room
Posts: 622

Thanks for the help guys, replaced servo and a massive improvement, the servo was cracked next to the bolt fitting on master cylinder

Optimists say the glass is half full..
Pessimists say the glass is half empty..
Engineers say the glass is twice the size it needs to be!

13th Jan 2022 6:48pm

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5423

Got a pic of the failed servo please.

13th Jan 2022 6:58pm

taffrican

Member Since: 14 Jan 2011
Location: Living room
Posts: 622

I’ll dig it out of the trash later

Optimists say the glass is half full..
Pessimists say the glass is half empty..
Engineers say the glass is twice the size it needs to be!

13th Jan 2022 7:09pm

Oldowner

Member Since: 26 Dec 2018
Location: South west
Posts: 603

landy andy wrote:
Got a pic of the failed servo please.

Don’t really need to have a pic, 99.9% of failures are in the same place.

13th Jan 2022 7:46pm

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