RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

Replaced air strut AWD

Thread Tools
 
Search this Thread
 
Old 08-14-18, 06:09 AM
  #1  
MikeB139
Driver School Candidate
Thread Starter
 
MikeB139's Avatar
 
Join Date: Apr 2018
Location: Gelderland
Posts: 26
Received 3 Likes on 3 Posts
Default Replaced air strut AWD

Hi all,

just wanted to drop some pictures from when I replaced a right rear air strut.
If you have the right tools it will take you about 1,5 hours. It's not that difficult.
This happened a week before the summer holiday so I was in a bit of a rush to get the stuff.
I bought an OEM strut in the UK which arrived after 2 days.
Next time a strut goes, I will replace everything with coilovers.

The bolts that attach the strut to the wheel hub (don't know the correct technical term) are VERY tight.
By hand there is no way you get these loose. I used an impact driver (Dewalt DCF887) and with that it's easy.

You also need an air/fuel line disconnect tool. You will need 1/4 inch. I borrowed mine from a local garage.
Just clip it around the airline and lightly tap it into the strut. After that it needs a light pull on the air line to get it out.
After that it's basic mechanic stuff.

If you have any questions: just ask










Last edited by MikeB139; 08-14-18 at 06:12 AM.
Old 08-17-18, 03:09 AM
  #2  
MikeB139
Driver School Candidate
Thread Starter
 
MikeB139's Avatar
 
Join Date: Apr 2018
Location: Gelderland
Posts: 26
Received 3 Likes on 3 Posts
Default

Well that was short lived.
Now the left rear air strut looses pressure after a few hours.
Not much yet, but that will continue to increase.

So, it's probably time to replace the air with coil-overs.
This kit seems promissing: BC Racing

I've emailed them to ask if it's a drop-in replacement.

I will keep this thread updated when I have more info.
Old 08-28-18, 01:03 PM
  #3  
Sking021
Driver School Candidate
 
Sking021's Avatar
 
Join Date: Aug 2018
Location: Hastings
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by MikeB139
Well that was short lived.
Now the left rear air strut looses pressure after a few hours.
Not much yet, but that will continue to increase.

So, it's probably time to replace the air with coil-overs.
This kit seems promissing: BC Racing

I've emailed them to ask if it's a drop-in replacement.

I will keep this thread updated when I have more info.
I am also looking at these coilovers to replace my 2004 rx300 se-l air suspension. Have you had any luck?
Old 08-29-18, 01:12 AM
  #4  
MikeB139
Driver School Candidate
Thread Starter
 
MikeB139's Avatar
 
Join Date: Apr 2018
Location: Gelderland
Posts: 26
Received 3 Likes on 3 Posts
Default

I’ve had a response from the Dutch distributeur and he can’t garantee a 100% drop-in fit.
It’s a replacement for the non-air RX’s. So it should be fine.

On a British Lexus forum there is someone that did it (air to these coil-overs) and said it was quite easy, so I’m gonna go for it...

I’m probably ordering this week so should have some results posted in the coming week(s).
Old 08-29-18, 06:53 AM
  #5  
shikbas
Intermediate
 
shikbas's Avatar
 
Join Date: Apr 2004
Location: Pennsylvania
Posts: 477
Likes: 0
Received 9 Likes on 8 Posts
Default

I just replaced the all the air struts with regular ones,just drop in the new spring ones no modification of any kind
There was an instrument cluster blinking light,I removed the cluster and cut a wire,I can not remember which ,I found that on this forum,no more blinking light but a solid air suspension one,you can cover with a black tape if you want
Old 10-05-18, 05:03 AM
  #6  
MikeB139
Driver School Candidate
Thread Starter
 
MikeB139's Avatar
 
Join Date: Apr 2018
Location: Gelderland
Posts: 26
Received 3 Likes on 3 Posts
Default

Okay, that took longer than intended, but I'm just too busy.
Tomorrow we are going to fit the coil-overs which I received two weeks ago.
Will keep you updated!




Old 10-07-18, 01:12 PM
  #7  
MikeB139
Driver School Candidate
Thread Starter
 
MikeB139's Avatar
 
Join Date: Apr 2018
Location: Gelderland
Posts: 26
Received 3 Likes on 3 Posts
Talking

So, the time finally arrived: no more air suspension!

I guessed it would take us 6-7 hours, knowing how fast we changed the right rear air-stut.
Boy was I wrong... My friend guessed 10 hours. He was more right than I.
We started at noon and finished 22:30, only had a quick lunch and dinner.



Wheels off, LOTS of penetrating fluid on all nuts and bolts and hope for the best.
We started at the front, because we knew the rear wasn't going to be too hard (or so I thought).
Jack under the wheel hub to support everything.



Remove the wipers, windshield cowl and the caps that enclose the strut bolts and air line. Easy enough.
Unscrew the airline and FREAK OUT, since there is still pressure in the line (I forgot about that, hehehe)



So far it's an easy job. Everything unscrews easy enough.

The wheel hub bolts.......
Those did NOT come off easily.
We snapped off a 1/2" impact drill bit trying to get it off.

Fortunately we had a massive torque wrench (goes up to 500Nm, or 370 foot pound). That thing must weigh 8-10Kg.
Loaded it up to 300Nm (220 foot pound) to make sure the bolt wouldn't brake (I think it can take a lot more, but better safe than sorry).
It came off!!



Last time I saw that the stabilizer links were bad, so I decided to change them with new ones (Febi Bilsteins).

That decision took us a LOOOOOT of time. Of course a lot of the bolts wouldn't come off, rusted through and through.
Disc grinder to the rescue.



The front of the links were quite easy, the backs were a pain in the derriere.
Hard to reach, lots of other things you do NOT want to cut.
Yes I did hit a few things very slightly, so be it...
Man, I hadn't worked a lot with disc grinders, by now I'm an expert



Removing everything took us more than 7 hours!
Another pain in the ****: removing that STUPID 60 amp fuse.
That thing wouldn't come out. Tried pliers and lots of force. Nothing, nada, zip, ne rien, nichts, niets.
So I simply opened the fuse and cut it and pushed the metal parts to each side inside the fusehousing.

Test started the car, no beeps, just a solid green light at the "N" position.

Putting everything in took the remaining 2,5 hours.



Another nice, not, surprise: someone in Taiwan mislabeled the rear left and right strut.
I found out when we had mounted everything on the right side and saw that the mounting plates for the wiring and stabilizer link were on the wrong side...
Nice one.

This morning we adjusted the rear ride height.
It was too low for comfort and didn't look right.
We increased the height by 2cm. Now the stance is a bit lower than neutral with air (I will make a picture of that tomorrow).

Adjusting ride height is very easy: remove wheel, loosen the bottom ring and start twisting the strut to the desired height.
Took us just a few minutes per side.



Ride comfort is set to 2 clicks from the softest setting.
Finally it drives like it should have!
A lot less bumpy and a lot less sound coming in to the cabin from rough roads.

Next job: removing the compressor and selling that (and the one, good as new, air strut).

The thing I'm not going to do: removing the front lower control arm.
Those bushings look shot. That's a job for my indy.

It is definitely a diy job, but know that it takes a lot off time and patience.
I wouldn't have done this by myself. Working together is far easier.






Old 10-09-18, 03:46 AM
  #8  
edwardh11
Driver
 
edwardh11's Avatar
 
Join Date: Jan 2017
Location: south carolina
Posts: 118
Likes: 0
Received 4 Likes on 4 Posts
Default

so many people have problems with air struts. I would not buy a car with them
Old 10-09-18, 04:38 AM
  #9  
MikeB139
Driver School Candidate
Thread Starter
 
MikeB139's Avatar
 
Join Date: Apr 2018
Location: Gelderland
Posts: 26
Received 3 Likes on 3 Posts
Default

Well, it depends on the car.
I got it for a good price, first owner, perfectly by the book maintenance till the last kilometer.
It had a new set of premium tires, newly powder coated rims, rear diff oil change, new wipers, new filters, etc. etc.

Basically a well maintained car.

Of course I knew beforehand the air would be troublesome, but that was calculated in my offer.

Last edited by MikeB139; 10-09-18 at 04:43 AM.
Old 10-09-18, 05:58 AM
  #10  
edwardh11
Driver
 
edwardh11's Avatar
 
Join Date: Jan 2017
Location: south carolina
Posts: 118
Likes: 0
Received 4 Likes on 4 Posts
Default

good buy then,
friend at work had a Lincoln, back bags leaked down during th day, so it squatted down when time to go home.
Old 10-09-18, 07:10 AM
  #11  
MikeB139
Driver School Candidate
Thread Starter
 
MikeB139's Avatar
 
Join Date: Apr 2018
Location: Gelderland
Posts: 26
Received 3 Likes on 3 Posts
Default

Well the right side rear was leaking "a bit" more.
You could hear the hissing

But that's in the past!
Everytime I start the car now I enjoy the lack of hearing the compressor turning on
Old 10-13-18, 01:49 PM
  #12  
MikeB139
Driver School Candidate
Thread Starter
 
MikeB139's Avatar
 
Join Date: Apr 2018
Location: Gelderland
Posts: 26
Received 3 Likes on 3 Posts
Default

So, I needed to raise the back a bit more and now the stance is fine.
It's a bit lower than neutral with air suspension.
I'm a happy with it!


Old 07-01-20, 06:07 AM
  #13  
MaartenV
Driver School Candidate
 
MaartenV's Avatar
 
Join Date: Jul 2020
Location: brabant
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default Vervangen luchtveren RX300 2004

Originally Posted by MikeB139
Well that was short lived.
Now the left rear air strut looses pressure after a few hours.
Not much yet, but that will continue to increase.

So, it's probably time to replace the air with coil-overs.
This kit seems promissing: BC Racing

I've emailed them to ask if it's a drop-in replacement.

I will keep this thread updated when I have more info.
Hallo Mike,

Maarten here also from the Netherlands, looking to change my air suspension to conventional struts.

Your link does not bring me to BC racing so can you send me the type of kit you bought there?

Hartelijk dank!

Maarten
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
3isdanny
Suspension and Brakes
7
05-25-17 08:28 PM
MAlvis
LS - 1st and 2nd Gen (1990-2000)
3
06-08-11 03:25 AM



Quick Reply: Replaced air strut AWD



All times are GMT -7. The time now is 11:32 PM.