changing front shock absorber on GX470 - ClubLexus - Lexus Forum Discussion


GX - 1st Gen (2004-2009) Discussion topics related to the 2003 -2009 GX470 models

     
Old 12-12-14, 03:48 PM
How-Tos on this Topic
 
Last edit by: IB Advertising
See related guides and technical advice from our community experts:

Browse all: Steering and Suspension
Print Wikipost

changing front shock absorber on GX470

Reply
 
 
 
Thread Tools Search this Thread
Old 05-17-14, 12:43 AM   #1
Sdgx470
Driver School Candidate
Thread Starter
 
Join Date: May 2014
Location: Ca
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Default changing front shock absorber on GX470

It's my first time working on my 2005 GX470 to change the front shock absorber. Have some questions on how to correctly and safely change it. Would appreciate your advice on the following:

1) To remove the strut assembly, do I need to remove the sway/stabilizer bar?
2) I have already removed the lower strut bolt, but got stuck on the top part. Should I remove the absorber control actuator and its bracket first (by removing the two nuts at label #3 in the attached photo)? It's not easy to get to these nut and seems like it's round. What tool to use for removing #3? There are two #3s, how to remove the on in the back?
3) how to disconnect #4? Or I can leave it connected?
4) should I loosen nut #2 to help remove the strut or the actuator? Is this the one that is holding the spring in position and loosen it without using the spring compressor is dangerous?
5) Also, it's hard to reach the third nut in the back (labeled as 1 with dashed arrow). So have to remove the bracket first?

Thanks for your help.
Attached Thumbnails
changing front shock absorber on GX470-photo.jpg  
Sdgx470 is offline   Reply With Quote
Old 05-17-14, 08:16 AM   #2
RCsGX
Lexus Champion
 
RCsGX's Avatar
 
Join Date: Mar 2012
Location: ★ᚱᚱ★
Posts: 1,811
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by Sdgx470 View Post
It's my first time working on my 2005 GX470 to change the front shock absorber. Have some questions on how to correctly and safely change it. Would appreciate your advice on the following:

1) To remove the strut assembly, do I need to remove the sway/stabilizer bar?
-Yes.

2) I have already removed the lower strut bolt, but got stuck on the top part. Should I remove the absorber control actuator and its bracket first (by removing the two nuts at label #3 in the attached photo)? It's not easy to get to these nut and seems like it's round. What tool to use for removing #3? There are two #3s, how to remove the on in the back?
- You need to remove the allen head bolts on the top bracket, there are 2 of them. The back one if very hard to get to...so once you remove the front one use some force and turn the bracket so the rear is now facing you. You don't have to do that part if you can get to it by hand but I wasn't able to get to it...well I was but I stripped the allen head because it was in such an awkward position when in the rear.

3) how to disconnect #4? Or I can leave it connected?
- Like any other clip, push the retainer in and remove the two sections and remove the bracket so it gives you space to work in.

4) should I loosen nut #2 to help remove the strut or the actuator? Is this the one that is holding the spring in position and loosen it without using the spring compressor is dangerous?
- Those are the allen heads I mentioned in step 2. You have to remove those first before anything.

5) Also, it's hard to reach the third nut in the back (labeled as 1 with dashed arrow). So have to remove the bracket first?
- Yes, again, you have to remove the top section first before anything.

Thanks for your help.
I'm attaching a PDF that shows step by step how to remove the OEM coilover. Good luck and remember to torque everything back to spec when finished.
*torque specs are in the PDF*
Attached Files
File Type: pdf 26-11 Front Suspension - Shock - Strut Overhaul.pdf (152.1 KB, 2257 views)
RCsGX is offline   Reply With Quote
Old 05-17-14, 05:18 PM   #3
Nothnghead
Driver
 
Join Date: Jul 2008
Location: Idaho
Posts: 135
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks so much for this RC. I'm doing this today too and barely have enough room to get my allen key into those stupid screws holding the shock control actuator. What a PITA!
Nothnghead is offline   Reply With Quote
Old 05-17-14, 08:00 PM   #4
Sdgx470
Driver School Candidate
Thread Starter
 
Join Date: May 2014
Location: Ca
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Default Stuck at step of removing strut

Thanks so much for the advice and document. It helps a lot.

I used an allen wrench to remove the outside #3, but got the inside #3 stripped . Like you suggested, rotate the bracket by tightening #2 a little bit so made the inside #3 easier to access. Still no luck. However, I was able to use a screwdriver to slowly loosen the bolt on top of the bracket (but underneath the black absorber control actuator) and remove it completely off the stem of the shock absorber. With the bracket and actuator still attached at the stripped bolt but so easy to access, I extracted the bolt out and replaced it with a $0.70 replacement from Ace Hardware.

With some PB Blaster treatment, I have completed the following:

1) removed stabilizer bar
2) removed bracket/actuator
3) removed lower bolt
4) removed upper bolts 3 of #1

However, got stuck at the step to remove the strut assembly from the knuckle. Seems like the struct assembly has a lot of force to extend, right I unscrew the lower bolt from onside of the knuckle, the absorber extended itself and the lower bolt is slanted. I managed to get the lower bolt out completely, but see the hold of the absorber bushing and the hole of the knuckle is not aligned anymore (absorber being lower in position). Then I used a hammer to try to knock the absorber out off the knuckle base, and it got stuck at a position as shown in the picture. I tried to jack up the bottom of the lower control arm to compress the spring a bit and managed to put a spring compressor on only one side to try to hold the spring as compressed and hoping that it won't fully extend the absorber once the jack is released. This does not work. The lower part of the absorber is stuck there. Seems like the rubber boot will be be in its way even if it can move out further.

From a few videos on U-tube and posts in the forum, seems like removing the strut should not be this difficult once the bottom bolt and top 3 bolts are removed. Did I do something wrong?

This makes me wonder even after I take it off and put the new OEM part on, how to put the assembly back into the right position in order to put the lower bolt in? The angle of the picture makes it less obvious of the mis-alignment but there is about 1/4 - 3/8 inch of difference between the two holes/circles and obviously the lower bolt can not make it through. Any trick to have these holes align so the lower bolt can be put back?

As always, thank you so much for the help.
Attached Thumbnails
changing front shock absorber on GX470-photo.jpg   changing front shock absorber on GX470-2photo.jpg  
Sdgx470 is offline   Reply With Quote
Old 05-17-14, 10:19 PM   #5
Nothnghead
Driver
 
Join Date: Jul 2008
Location: Idaho
Posts: 135
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I removed both of the 19mm bolts on the lower ball joint (the ones that fasten the spindle to the lower control arm (LCA)). With a bit of prying with a crow bar, I was able to get enough movement out of the LCA to get the strut out but in the reassembly phase, I'm having no luck getting my new and taller coil-overs back into place. Perhaps when my brother in law gets here, he'll be able to push that LCA down enough for me.

Why is there so much resistance in that LCA?
Nothnghead is offline   Reply With Quote
Old 05-18-14, 08:30 PM   #6
BradTank
Lexus Test Driver
 
BradTank's Avatar
 
Join Date: Jan 2011
Location: AZ
Posts: 1,368
Thanked 48 Times in 36 Posts
Default

Quote:
Originally Posted by Sdgx470 View Post
Thanks so much for the advice and document. It helps a lot.

I used an allen wrench to remove the outside #3, but got the inside #3 stripped . Like you suggested, rotate the bracket by tightening #2 a little bit so made the inside #3 easier to access. Still no luck. However, I was able to use a screwdriver to slowly loosen the bolt on top of the bracket (but underneath the black absorber control actuator) and remove it completely off the stem of the shock absorber. With the bracket and actuator still attached at the stripped bolt but so easy to access, I extracted the bolt out and replaced it with a $0.70 replacement from Ace Hardware.

With some PB Blaster treatment, I have completed the following:

1) removed stabilizer bar
2) removed bracket/actuator
3) removed lower bolt
4) removed upper bolts 3 of #1

However, got stuck at the step to remove the strut assembly from the knuckle. Seems like the struct assembly has a lot of force to extend, right I unscrew the lower bolt from onside of the knuckle, the absorber extended itself and the lower bolt is slanted. I managed to get the lower bolt out completely, but see the hold of the absorber bushing and the hole of the knuckle is not aligned anymore (absorber being lower in position). Then I used a hammer to try to knock the absorber out off the knuckle base, and it got stuck at a position as shown in the picture. I tried to jack up the bottom of the lower control arm to compress the spring a bit and managed to put a spring compressor on only one side to try to hold the spring as compressed and hoping that it won't fully extend the absorber once the jack is released. This does not work. The lower part of the absorber is stuck there. Seems like the rubber boot will be be in its way even if it can move out further.

From a few videos on U-tube and posts in the forum, seems like removing the strut should not be this difficult once the bottom bolt and top 3 bolts are removed. Did I do something wrong?

This makes me wonder even after I take it off and put the new OEM part on, how to put the assembly back into the right position in order to put the lower bolt in? The angle of the picture makes it less obvious of the mis-alignment but there is about 1/4 - 3/8 inch of difference between the two holes/circles and obviously the lower bolt can not make it through. Any trick to have these holes align so the lower bolt can be put back?

As always, thank you so much for the help.
Not sure if this would help, but I've heard you can use the factory "scissor" jack or a small bottle jack and wedge it in there between the control arm and frame in order to get more room for the strut assembly to fit.
BradTank is offline   Reply With Quote
Old 05-18-14, 09:26 PM   #7
RCsGX
Lexus Champion
 
RCsGX's Avatar
 
Join Date: Mar 2012
Location: ★ᚱᚱ★
Posts: 1,811
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by Nothnghead View Post
I removed both of the 19mm bolts on the lower ball joint (the ones that fasten the spindle to the lower control arm (LCA)). With a bit of prying with a crow bar, I was able to get enough movement out of the LCA to get the strut out but in the reassembly phase, I'm having no luck getting my new and taller coil-overs back into place. Perhaps when my brother in law gets here, he'll be able to push that LCA down enough for me.

Why is there so much resistance in that LCA?
I just used a 24" pry bar and did what Brian suggested below in the link and used my leg to press down on the pry bar.
http://www.toyota120.com/forum/showthread.php?t=3270

I was able to get the Icon coilover in there but the bottom mount was a little tricky. Icon uses 2 spacers (metal bushings) in the bottom mount to offset the coilover so it doesn't rub on the swaybay. Since they weren't press fit in getting everything to line up at once was a little tricky, especially when doing this alone.
RCsGX is offline   Reply With Quote
Old 03-18-15, 09:38 PM   #8
Ali SC3
Lexus Fanatic
iTrader: (10)
 
Ali SC3's Avatar
 
Join Date: Oct 2007
Location: CO
Posts: 9,483
Thanks: 0
Thanked 24 Times in 22 Posts
Default

I am hoping someone can help me with some advice on removing the shock assembly step.
I followed the instructions word for word, I removed the top 3 14mm nuts on the shock, and the lower 19mm bolt for the lower shock mount, and the shock is hanging there free but it will not seperate from the top part of the mount. its like the metal top hat is stuck to the mount, I cannot get it to separate I tried a pry bar and even a crowbar. soaked it in PB blaster and taking a break to figure it out. did your guys just fall out easily at this point??

as I move the shock around there is a rubber part on top that is flexing under nut #2 in the picture above that holds the coil compressed together. It seems like the strut should have come loose by now, the 3 studs on top do not seem to move at all just the rubber part under nut #2. the rubber part almost seems wedged in there I tried to loosen nut #2 on top of it to relax it thinking it would help release easier but I stopped after a few turns because it doesn't seem right the manual does not mention this at all. anyone have any ideas or have a similar problem? I will have to leave it for tomorrow.

Last edited by Ali SC3; 03-18-15 at 09:43 PM.
Ali SC3 is offline   Reply With Quote
Old 03-19-15, 06:27 AM   #9
new2012jee
Rookie
 
Join Date: Mar 2015
Location: FL
Posts: 78
Thanks: 0
Thanked 0 Times in 0 Posts
Default

"I removed the top 3 14mm nuts on the shock, and the lower 19mm bolt for the lower shock mount,"

If you follow the shaft up, you should have a nut holding the strut in place, it would be above the hat, it will be directly on the strut.
new2012jee is offline   Reply With Quote
Old 03-19-15, 08:23 AM   #10
Ali SC3
Lexus Fanatic
iTrader: (10)
 
Ali SC3's Avatar
 
Join Date: Oct 2007
Location: CO
Posts: 9,483
Thanks: 0
Thanked 24 Times in 22 Posts
Default

I am trying to take out the shock and springs as a unit. My understanding is if I undo that top nut that you are referring to the strut will fall down, the spring will come loose, but the top hat will still be stuck where it is.
Ali SC3 is offline   Reply With Quote
Old 03-19-15, 10:53 AM   #11
shyguyF
Lead Lap
 
Join Date: Oct 2012
Location: il
Posts: 536
Thanked 8 Times in 8 Posts
Default

Quote:
Originally Posted by Ali SC3 View Post
I am trying to take out the shock and springs as a unit. My understanding is if I undo that top nut that you are referring to the strut will fall down, the spring will come loose, but the top hat will still be stuck where it is.
Hope this video help!
shyguyF is offline   Reply With Quote
Old 03-19-15, 10:59 AM   #12
Ali SC3
Lexus Fanatic
iTrader: (10)
 
Ali SC3's Avatar
 
Join Date: Oct 2007
Location: CO
Posts: 9,483
Thanks: 0
Thanked 24 Times in 22 Posts
Default

Yeah I went back out there today after letting it soak all night, it still did not want to come off =(
I got a crow bar wedged at an angle between the top plate and the mount, and got the biggest hammer I had and went to town on it ( i tried same last night but with alot less force).
well on the 5th large hit the shock just fell down, so it was just dirt and grime holding it in place which is seriously the strongest I have ever encountered.

so thanks for the suggestion guys, it turned out to be a simple problem that needed a bigger hammer, or as I call it "suspension adjustment tool"

Last edited by Ali SC3; 03-19-15 at 01:40 PM.
Ali SC3 is offline   Reply With Quote
Old 08-08-16, 04:58 PM   #13
SC3coupe
Lexus Test Driver
iTrader: (4)
 
Join Date: May 2007
Location: CA
Posts: 986
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Guys the 4mm hex bolt was a major pita. The upward facing and in a dirty location, 4mm is tiny. After 3 of mine came out with a pop sound the 4th one is a inside one. I was desperate and knew I was going to strip it and kept pulling, And I did. The front ones I used a vise grip and hex at the same time. I suppose should rotate the bracket and do that with the back bolts in retrospect.

After almost an an hour of getting a tiny vise grip in the back with the bracket rotated a bit. I got it out.
I think the trick is a lot of penetrating oil a bit before hand, liberally so it can get down the actuator to the threads. The op got the nut off with a screw driver which is good but that but on mine is pretty tight.

it did not come out until I sprayed and waited and tighten the vise grip so it was very very hard to squeeze together. Even so you got like 1/4" to turn the tiny vise grip.


Attached Thumbnails
changing front shock absorber on GX470-image.jpeg  
SC3coupe is offline   Reply With Quote
Old 08-09-16, 09:03 AM   #14
BradTank
Lexus Test Driver
 
BradTank's Avatar
 
Join Date: Jan 2011
Location: AZ
Posts: 1,368
Thanked 48 Times in 36 Posts
Default

The Allen bolts were the hardest part of the job for me, just a stupid fastener for Lexus to use in that location.

FWIW, I used the Monroe Quik-Struts on it where the spring and strut are a complete assembly and the ride honestly feels better than what was on there. Very cush ride, maybe even better than the LS430 I have.
BradTank is offline   Reply With Quote
Old 08-09-16, 09:43 AM   #15
Cueball1
Driver School Candidate
 
Join Date: Aug 2016
Location: Idaho
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thread highjack-
Just replaced my front struts with the 4600 series bilstein. Is there a way to fool the vsc sensor in the top of the stock shock? The vsc lights are on as well as the brake and abs warning lights. Had searched threads and it seemed folks were doing this and not throwing warning lights on. Did I miss something?!? All help greatly appreciated!
Cueball1 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
LS460 Control Arm DIY (upper and lower) with Torque Spec's superdenso LS - 4th Gen (2007-2017) 18 09-16-17 09:02 AM
GS430 L-Tuned Suspension Install jonathancl Suspension and Brakes 124 04-03-17 08:56 AM
DIY: is250 awd front axle replacement ExplicitT IS - 2nd Gen (2006-2013) 5 07-01-16 04:43 AM
DIY: 90-94 LS400 Front Air Suspension Removal (Air Struts) jdog0411 LS - 1st and 2nd Gen (1990-2000) 13 04-19-16 10:37 AM
Replacement of Front Shock Absorbers -DIY marylandlp LS - 4th Gen (2007-2017) 12 02-18-16 05:30 PM


Tags
470 , absorber , absorbers , back , electronic , front , gx , gx470 , install , lexus , lx470 , remove , replace , shock , shocks , strut

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -7. The time now is 05:33 PM.


Copyright © 2000-2017 Internet Brands, Inc. All Rights Reserved
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: