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DISCO4.COM > Maintenance & Mods (D3)

Oil in servo symptoms but not it.
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loanrangie
 


Member Since: 18 Jun 2017
Location: Melbourne
Posts: 600

Australia 2008 Discovery 3 TDV6 SE Auto Stornoway GreyDiscovery 3
Oil in servo symptoms but not it.

I have just started started having the hard brake pedal (lack of vacuum assistance ) but after checking the servo there is no oil in it and the vacuum lines are are dry and clean.
Vehicle had the recall done in 2010 but i think maybe its taken this long for the servo to fail, it holds vacuum overnight alright but loses assistance after about the 2nd brake application.  
Post #232274315th Jan 2023 10:01 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10365

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Are you sure the vac pump is working ?  
Post #232274515th Jan 2023 10:28 am
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loanrangie
 


Member Since: 18 Jun 2017
Location: Melbourne
Posts: 600

Australia 2008 Discovery 3 TDV6 SE Auto Stornoway GreyDiscovery 3

Its working but i need to check if its reaching the required vacuum, i will be testing the servo tomorrow.  
Post #232274615th Jan 2023 10:34 am
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loanrangie
 


Member Since: 18 Jun 2017
Location: Melbourne
Posts: 600

Australia 2008 Discovery 3 TDV6 SE Auto Stornoway GreyDiscovery 3

Opened up the booster and found the smallest film of oil on one of the diaphragms, not the first one which is why it didn't show when dipping a cable tie into it.
Replaced the booster with a newer upgraded part from a mates wreck and back to working brakes again. I used a vacuum tester to confirm that the vac pump was working correctly.  
Post #232418626th Jan 2023 9:24 am
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