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Lower Control Arm Change (How To)

  • Thread starter Thread starter Strype
  • Start date Start date Nov 13, 2006

Strype

Cuthbert catcher
Founding Member
May 11, 1999
61
34
104
Huntsvegas, AL
Nov 13, 2006
#1
  • Nov 13, 2006
  • #1
There maybe a couple of posts out there already about this, but I'd like to share our experience with changing the Lower Control Arms.

Well, I don't have any pictures. But, I will take pictures when I change them on my car. This weekend we traded MyBad70's stock lower control arms for a pair of Granatelli.

We did not bother with the uppers due to time constraint. Unless you bought adjustable uppers there is really no point in our opinion to change them. You can also weld a plate onto them to strengthen them.

Here's a few helpful hints to keep you from turning a 1 hour job into a 2 day job like we did

You'll need-
a) Two 18mm sockets
b) Socket for swaybar bolts (I think 15mm)
c) PB Blaster Lubricant (buy at autozone/advance)
d) 2 Jacks
e) 2 Jack Stands
f) A friend that is not lazy.

1) Take the rear wheels off. Make sure to put the car up on jack stands underneath the subframes. If you do not have subframe connectors the job will be harder for you. Leave the axle hanging. You will later need a jack under the chunk (Pumpkin). For now if you have a couple of extra stands it won’t hurt to put them under the axle. Make sure to jack it up high!!! Maybe a foot or more off of the ground. There must be room to drop the LCA’s. There must be room to decompress the spring fully!!!

2) Remove the swaybar. It's 2 bolts on each side connected at the LCA's. I remember using a 15mm socket, though I could be wrong.

***Dangerous Part!!!***
Be Careful with this part! Anytime one is dealing with coil springs it can be dangerous if not deadly. Can’t hold me liable for anything and don’t say I didn’t warn you. If you’ve never dealt with coil springs before it’s a good idea to have someone around to help you. It’s a good idea to have someone there just in case you need them or at least make someone aware of what you’re doing so they can keep an eye out for you. Also, if you want to be a little safer you can take a “Come along” ratcheting strap and tie the spring off to prevent it from accidentally discharging from underneath the car. Always stay clear of the spring you are taking out and make sure all people, animals and cars are out of the way!!!

3) Put a jack underneath one of the rear springs underneath the rear of the control arm. You may want to tie the spring off as a preventative measure. Make sure the jack is touching the LCA and that it is keeping the spring under pressure.

4) Make sure the jack is in a proper place and will not roll under pressure. Unbolt the LCA at the rear. You’ll need some PB Blaster and two 18mm sockets.

5) Have a friend watch you at a distance. Once the bolt is removed the only thing holding the compressed spring is the jack. VERY CAREFULLY and VERY SLOWLY decompress the spring by slowly lowering the jack. Once the spring is completely decompress it should fall out. The axle maybe then be pitched to one side but that’s normal. Repeat steps 3,4 and 5 on the other spring.

6) Take the exhaust off of the hangers from the mufflers back. The mufflers will be in the way of taking the front LCA bolt out.

7) Take the front LCA bolt out. A swivel maybe necessary or it may not. Use two 18mm sockets.

8) Remove the stock LCA. This part may take some force. Spray some PB blaster onto the sides next to the bolt holes. Wiggle the LCA side to side and pull it backwards. It will eventually come out. If not, a pry bar is handy.

***Half Way There***

9) Spray some lubricant or use bearing grease to place the new LCA’s into place. Make sure that if the swaybar mount is not centered that you put them on the correct sides with the swaybar mount being closest to the outside of the car on each side. Bolt them in tight!


***Dangerous Part!!!***

10) Place the spring onto the new LCA and into the hole at the top. Place the jack underneath the LCA directly underneath the spring.

11) Compress the spring by jacking the LCA into place. Do this SLOWLY!!! Once compressed the jack will be the only thing between you and a trip to the emergency room or the morgue!!! You may want to tie the spring again to the car. Make sure to do all side to side adjustments by CAREFULLY moving the jack when the spring is still mostly decompressed. Don’t wait until you compress the spring almost in to place to move the jack- that’s dangerous.

12) Place the bolt into the hole. If it doesn’t line up, place a separate jack under the pumpkin where the drive shaft connects. When you jack up on the pumpkin, the axle should move toward the LCA so that you can feed the bolt through. Take your time and if you need to, slowly decompress the spring again and start over. Do not force anything! Tighten the bolt up and the lower the jack. Repeat steps 10, 11 and 12 for the other side.

13) Reinstall the swaybar. You may have to connect it back to the outside of the LCA’s by switching the clips around.

14) Put the wheels back on.
 
D

Deleted member 87397

Nov 13, 2006
#2
  • Nov 13, 2006
  • #2
Nice write up. I just sold those LCA's to MyBad. How does it run with the Grannatelli's?
 

Strype

Cuthbert catcher
Founding Member
May 11, 1999
61
34
104
Huntsvegas, AL
Nov 13, 2006
#3
  • Nov 13, 2006
  • #3
fastfox86 said:
Nice write up. I just sold those LCA's to MyBad. How does it run with the Grannatelli's?
Click to expand...


He's gitty like a little school girl

He said it made a world of difference
 

bullitstang1313

Member
Jan 21, 2003
713
0
16
Indianapolis / Columbus, Indiana
Nov 13, 2006
#4
  • Nov 13, 2006
  • #4
You might just add that you could always buy or rent a coil spring compressor to be a little safer rather than relying on the jack all together.
 

jrichker

StangNet's favorite TOOL
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Mar 10, 2000
27,512
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Dublin GA
Nov 13, 2006
#5
  • Nov 13, 2006
  • #5
Aren't the tabs at the top of the springs supposed to point in one certan direction?
 
9

93gt1217

New Member
Mar 30, 2005
18
0
0
Nov 13, 2006
#6
  • Nov 13, 2006
  • #6
yes you're correct you'll see where they are supposed to seat in on the control arm and on the body.. If i remember correctly also the flat part on the spring faces up.
 

Strype

Cuthbert catcher
Founding Member
May 11, 1999
61
34
104
Huntsvegas, AL
Nov 13, 2006
#7
  • Nov 13, 2006
  • #7
jrichker said:
Aren't the tabs at the top of the springs supposed to point in one certan direction?
Click to expand...




Oh yeah that too
 

Maryland Stang

Active Member
Aug 21, 2002
1,656
30
39
Greenville, NC
Nov 14, 2006
#8
  • Nov 14, 2006
  • #8
You made the bolts at the front of the control arm sound easy. Mine were completely seized into the steel sleeve that runs through the bushing due to rust from too many Jersey winters. A air chisel with a blunt nose chisel point was the only way to get them out and even that took quite a while.
 

Roland69

Sergeant Tangnet
Sep 17, 2005
2,867
2
58
Port Elgin, Ontario
Nov 14, 2006
#9
  • Nov 14, 2006
  • #9
who was the lazy friend.....strype or mybad
 
3

310stanger

New Member
Aug 15, 2006
170
1
0
Nov 14, 2006
#10
  • Nov 14, 2006
  • #10
FANTASTIC write up. thanks for taking the time to write something out in such an organized fashion. Rear control arms are sometihng i really need to get going on.
 
P

PJB

New Member
Aug 22, 2006
131
0
0
Rotterdam, NY
Nov 14, 2006
#11
  • Nov 14, 2006
  • #11
I just changed the uppers and lowers on mine two weeks ago. I did it on my friends lift and it ended up being alot more of a pain than I thought it would be even with all the tools I needed.

I used a transmission jack and a screw jack to move the rearend and control arms to where they needed to be.

Im guessing I put the lowers on the wrong sides because I had to reverse the bolts and clips for the sway bar. No big deal I guess but I didnt think the arms were different.

I had trouble getting the bolt closest to the rear on each of the lowers out and one actually broke. They were rusted to the bushings.
 

donsbad68

Immensely Educated
Jan 4, 2003
838
0
0
Oklahoma
Nov 14, 2006
#12
  • Nov 14, 2006
  • #12
I'm surprised in Strype at the moment. I didnt know he ventured to tech much.
 

Darkwriter77

Resident Ranting Negative Nancy
5 Year Member
Jul 1, 2005
314
281
134
Apache Junction, AZ
Nov 15, 2006
#13
  • Nov 15, 2006
  • #13
Great write-up! I've got this thread saved for when I get around to changing mine out next spring (or whenever I can afford a decent set).
 
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