Discovery 2 ACE anti-roll bar

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Ajcrabb

Member
Posts
21
Location
Wiltshire UK
Hi there, i have a 2001 discovery 2 with ACE fitted, the rear anti roll bar link on the drivers side has worn through and broken and is only connected on the axel side of the link, and there is nothing connected to the ACE long arm and the ACE long arm has now extended down and is almost touching the axel, i have the link to fix this however the ACE is locked solid and i cant move it up enough to fit the new link any ideas?

Please ask questions if i have missed anything!

Cheers in advance
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Hate to say it but I would guess you will have to depressurise the ACE bit somehow and I wouldn't know how to do that, as it will be to do with electronix, which is a black art to me! But others on here will know how.
You may possibly find out how to do this in RAVE or even Haynes as this isn't the most unlikely bit of maintenance work that needs doing on a Disco.
 
Hate to say it but I would guess you will have to depressurise the ACE bit somehow and I wouldn't know how to do that, as it will be to do with electronix, which is a black art to me! But others on here will know how.
You may possibly find out how to do this in RAVE or even Haynes as this isn't the most unlikely bit of maintenance work that needs doing on a Disco.

Yeah i thought that might be the case i was really hoping it wouldnt be though!
 
Hi there, i have a 2001 discovery 2 with ACE fitted, the rear anti roll bar link on the drivers side has worn through and broken and is only connected on the axel side of the link, and there is nothing connected to the ACE long arm and the ACE long arm has now extended down and is almost touching the axel, i have the link to fix this however the ACE is locked solid and i cant move it up enough to fit the new link any ideas?

Please ask questions if i have missed anything!

Cheers in advance
View attachment 220891
you must have both links unattached?
 
The Haynes manual says "remove the ACE actuator" it then goes on to give massive warnings about not allowing any dirt to get into the system etc etc.
It also says that once fitted "it may be necessary to bleed the ACE hydraulic system using Testbook at a LR garage etc having driven it there gently"
BUT it then says "However, in the majority of cases, we have found that the system will self-bleed, providing the hydraulic system is not "dry" (completely empty).
So actually not as bad as it seems.
Once this is done the rest is pretty straightforward,
"Undo the nut and detach the long arm from the anti-roll bar link.
Undo the retaining bolt, recover the washer then pull the long arm from the anti-roll bar.
Ensure all mating faces are clean, :rolleyes:
Position the long arm on the anti-roll bar, fit the retaining bolt and washer, then tighten it to specified torque (I'll give all the torques at the end as there are loads)
Fit the end of the long arm over the end of the anti-roll bar link, then refit the nut and tighten it to the specified torque
Refit the ACE actuator .....
i.e. Position the actuator, refit the mounting bolts/nuts and tighten them to the specified torque. "
(Now the famous bit)
"The remainder of refitting is a reversal of removal, noting the following points:
a) Tighten all fasteenrs to the specified torque where given.
b) Change the ACE fluid filter as described in chapter 1
c) Have the rear ACE hyrdraulic system bled by a LR dealer or specialist.

So the last bit is a bit self-contradictory and provided you have kept everything well clean and not lost much fluid probably will not be necessary!
Torque settings
ACE actuator to long arm 48 Nm or 35 lbs ft
ACE long arm to anti-roll bar link 50 Nm or 37 lbs ft
ACE long arm to anti roll-bar 180Nm or 133 lbs ft
Anti-roll bar connecting link nuts 50 Nm or 37 lbs ft
Ditto mounting clamp bolts 45 Nm or 33 lbs ft

Hope this all makes sense, as much as a Haynes manual ever does!:):):):):)
 
The Haynes manual says "remove the ACE actuator" it then goes on to give massive warnings about not allowing any dirt to get into the system etc etc.
It also says that once fitted "it may be necessary to bleed the ACE hydraulic system using Testbook at a LR garage etc having driven it there gently"
BUT it then says "However, in the majority of cases, we have found that the system will self-bleed, providing the hydraulic system is not "dry" (completely empty).
So actually not as bad as it seems.
Once this is done the rest is pretty straightforward,
"Undo the nut and detach the long arm from the anti-roll bar link.
Undo the retaining bolt, recover the washer then pull the long arm from the anti-roll bar.
Ensure all mating faces are clean, :rolleyes:
Position the long arm on the anti-roll bar, fit the retaining bolt and washer, then tighten it to specified torque (I'll give all the torques at the end as there are loads)
Fit the end of the long arm over the end of the anti-roll bar link, then refit the nut and tighten it to the specified torque
Refit the ACE actuator .....
i.e. Position the actuator, refit the mounting bolts/nuts and tighten them to the specified torque. "
(Now the famous bit)
"The remainder of refitting is a reversal of removal, noting the following points:
a) Tighten all fasteenrs to the specified torque where given.
b) Change the ACE fluid filter as described in chapter 1
c) Have the rear ACE hyrdraulic system bled by a LR dealer or specialist.

So the last bit is a bit self-contradictory and provided you have kept everything well clean and not lost much fluid probably will not be necessary!
Torque settings
ACE actuator to long arm 48 Nm or 35 lbs ft
ACE long arm to anti-roll bar link 50 Nm or 37 lbs ft
ACE long arm to anti roll-bar 180Nm or 133 lbs ft
Anti-roll bar connecting link nuts 50 Nm or 37 lbs ft
Ditto mounting clamp bolts 45 Nm or 33 lbs ft

Hope this all makes sense, as much as a Haynes manual ever does!:):):):):)
Thanks for looking that up for me!
 
have you tried pushing it back up with engine running
Jesus James!
I didn't dare to suggest this although I thought it might be a way of doing it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Instead I have transcribed reams from the Haynes manual and given him links to RAVE!!!
(Sometimes I should just go with my gut!:rolleyes::rolleyes::rolleyes:)
:):):):)
 
have you tried pushing it back up with engine running
Yeah i gave that a go last night also in low range (i have seen some say it turns the system off in low range) but no luck with that either, i hasn't turned the car on since last night and im under it now, and there is a bit more play in the ACE arm (the most play i have been able to get so far) still not enough though
 
I wondered if there is a way to power the solenoid valve in the ACE valve block to allow the fluid to go back through thr system to make the arm lose but not a clue if that woud work?
 
Yeah i gave that a go last night also in low range (i have seen some say it turns the system off in low range) but no luck with that either, i hasn't turned the car on since last night and im under it now, and there is a bit more play in the ACE arm (the most play i have been able to get so far) still not enough though
Are you just trying to push it back with your hands? Or are you using some mechanical means i.e. a lever or a jack?
As you are trying to compress a liquid thingy, you might just get away with cleaning it all up thoroughly then just cracking the fluid connection, compressing it then tightening the fluid connection bak up again. Some ATF or whatever will come out but with any luck you should introduce no or very little air into the system. And as Haynes says, once running it'll bleed itself anyway. Think about it like pushing a disc brake piston back into its cylinder, remove the fluid pressure and it goes back in easier.
 
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I wondered if there is a way to power the solenoid valve in the ACE valve block to allow the fluid to go back through thr system to make the arm lose but not a clue if that woud work?
Thinking about how ACE works, it extends the long arm when it thinks you need to shove that end of the anti-roll bar down to compensate for roll to the right, if it can be fooled into thinking there is roll to the left, it would do the opposite so how about jacking the car up on the right so it rolls a bit to the left, with the engine running, it would sense this and pull the actuator back, wouldn't it?
Just trying to think out of the box!!!
 
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