Member Since: 18 Apr 2020
Location: lans
Posts: 141
Reduced brakes downhill problem looking for an explanation
Hello gentlemen and ladies.
Looking for an explanation on the brakes servo issue that the d3 suffered from
Mine has oil in the servo however the recall has bee done judging bu the pipework and after getting nowhere with the landrover customer service it looks like the job will be all mine to do .
So if the pump is pulling vac which it is and the inline nrv is working. How does the oil migrate to to servo as to vac is from the pump pulling in the opposite direction ,
Also what exactly does it do to reduce the brakes on a hill as looking at mine although there us oil present in the servo there isnt gallons of it so I'm failing to see how it would be enough to reduce the vacuum space to the extent of reduced braking .
I'm not questioning what's being said at all just not fully understanding how and I'm looking for some help to understand .
Regards Baz
12th May 2020 5:02 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10483
1. I guess the issues is when you turn the engine off? Oil can get out the engine. Good question!
2. Please be aware the brakes on the 2.7 and the not adequate when you take it near a hill
Advanced Factors sell reasonably priced upgrades. (new disc, new caliper bracket and new pads) (check min wheel size)
or if you tow, you may want brembo front brakes from RRS (19" wheels required). That does get expensive
12th May 2020 5:30 pm
Bazross
Member Since: 18 Apr 2020
Location: lans
Posts: 141
Ahh ok yeah a failing nrv and the vac inside the servo makes sense that could draw oil back for sure .
And the brakes ain't the best are they not ?
The mrs is going to use it for towing horses so it has to be on the money really .
12th May 2020 5:35 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10483
I'd upgrade the brakes first then
12th May 2020 5:40 pm
garfield2
Member Since: 24 Jul 2008
Location: morley, leeds
Posts: 313
My understanding of this is one get it fixed without delay, as there will be no warning of no brakes
Inside the pipe work is the none return valve which acts as an atomiser for the oil fumes, bear in mind the heat and cooling process so oil is present as a very fine mist, cools and then runs into the pump and servo.
Pump in the picture, more oil tha Q8
Regards
Martin
Discovery 4.5 HSE 2015 MY
Discovery 3 SE 2007 MY gone with spinning journals
12th May 2020 5:42 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10483
Click image to enlarge
The drive in the middle (and below it) should have oil on it. That bit is in the engine.
The non return valve was part of the modification, and not fitted to the early models
Last edited by Pete K on 12th May 2020 6:00 pm. Edited 1 time in total
12th May 2020 5:57 pm
Bazross
Member Since: 18 Apr 2020
Location: lans
Posts: 141
Ok so how does it stop the brakes from working and how much of a pig of a job is it to replace the pump
I've taken a look today and it seems extremely tight fot space and seems as you have to remove part of the exhaust system which working off my back no ramp is going to be interesting
12th May 2020 6:00 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10483
neither the pump or servo are easy to replace.
I'm not even sure if there is any point in changing the pump in this case?
12th May 2020 6:01 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10483
Member Since: 18 Apr 2020
Location: lans
Posts: 141
well I'll order the pump and gasket and break into it this weekend .
I will take pics and let you know how I get on .
I'm.also going to fit extra nrv inline to see if it helps .
Bit of a poke in the eye really this is a known issue and LR should be sorting this out given the gravity of the situation if it fails in total
12th May 2020 6:13 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10483
I thought the recall was to change the servo and pipe work.
They are concerned oil can damage the seals on the brake master cylinder I think.
If you want to change the pump I guess it's peace of mind. Clean the servo oil out. You don't want oil getting from the servo to the new pump I guess?
12th May 2020 6:16 pm
Bazross
Member Since: 18 Apr 2020
Location: lans
Posts: 141
So the pump is not the issue? coz if it isnt I'd be inclined not to replace it at the moment ,the master cylinder and servo is pretty easy to take off and refit.
Aldo how is it for bleeding up afterwards .
I have the diagnostics that have the bleeding facility on for the abs if that helps
12th May 2020 6:45 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10483
you don't need to do any bleeding.
undo the 2 bolts for the master cylinder (the thing with the brake pipes) and pull it forward slightly.
See the youtube videos above, to show you how. or other other videos from powerful
12th May 2020 7:22 pm
Brookert
Member Since: 03 Apr 2020
Location: Suffolk
Posts: 52
Just to add my 2 penneth.
I had an issue that I thought was related to the brake booster. The brakes would alarmingly fade away down hill very quickly.
I bled all the brakes, and the colour difference between the new and old was huge, and I haven't had a problem since.
12th May 2020 10:07 pm
Bazross
Member Since: 18 Apr 2020
Location: lans
Posts: 141
Really ?
I take it you mean the fluid.
This had oil in the servo thou for sure but I may change the fluid as well .
Regards
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
well I'll order the pump and gasket and break into it this weekend .
