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Silver110



Member Since: 10 Jun 2020
Location: East Sussex
Posts: 49
England 2008 Defender 110 Puma 2.4 XS CSW Zermatt Silver
Vacuum pump bleeding
Hello All,

Recenley changed the vacuum pump over on my 2.4 110 and was just wondering wether anything needs to be bled afterwards as I’m having trouble with the brake pedal going hard on slow manouvering.

In general road driving it’s fine but off roading and parking etc it seems to go solid.

Also the oil that sprayed all over the bonnet from the leaking vacuum pump. Would that be engine oil or brake oil?


TIA
Post #920182 6th Sep 2021 9:36am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 16876
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Nothing needs to be bled, the oil is engine oil. A new pump should immediately have solved your problem, something is not right and needs to be investigated. Was it a good quality pump or something unspeakable like Britpart?

I suspect that either there is a vacuum leak or the new pump is defective.
Post #920190 6th Sep 2021 10:11am
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Silver110



Member Since: 10 Jun 2020
Location: East Sussex
Posts: 49
England 2008 Defender 110 Puma 2.4 XS CSW Zermatt Silver
It was a genuine Ford water pump and vacuum pump I replaced them at the same time.

Trying to think what else it could be. I’m guessing something related to vacuum as the brakes work fine otherwise.
Post #920228 6th Sep 2021 1:22pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231
Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Check the vacuum pipe from pump to servo and the rubber seal/bung on the servo. My pipe developed a leak leaving me with non servo assisted/solid pedal brakes > 110 XS Double Cab
> Instagram @simonlanemind
Post #920234 6th Sep 2021 1:58pm
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Silver110



Member Since: 10 Jun 2020
Location: East Sussex
Posts: 49
England 2008 Defender 110 Puma 2.4 XS CSW Zermatt Silver
How tight is it supposed to sit into the vacuum
Pump?

I’ve got no oil leaks around the vac pump, but the round bit of the brass fitting that’s sits over the vac pipe moves around a lot inside the fitting

Seems fine the servo end.





Click image to enlarge
Post #920444 7th Sep 2021 7:50pm
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Silver110



Member Since: 10 Jun 2020
Location: East Sussex
Posts: 49
England 2008 Defender 110 Puma 2.4 XS CSW Zermatt Silver
If possible can a few people go to there engine bays and give that black hose and brass fitting a wiggle and a pull to see if there’s move or wether it’s solid.

I’ve got a feeling that this may be where my issue is. Mine although doesn’t leak does pullin and out a fair few mm
Post #926604 21st Oct 2021 5:53am
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