Replaced Front LCA Bushings
So a few weeks ago when I put my new springs, shocks, and BFG ATs on, the alignment shop (yes, the stealership was having a discount, so I took it there) told me my LCA bushings were shot. $1100 to fix them. Really?
Nope, I'm going to do them myself. I have to admit, I was a little afraid to take it on, partly because everyone on here (well, the 3rd gen forums...not many 4th gen people said they did it) sounded a little hesitant, and second, there was much to lose (not being able to immediately put the vehicle back together again).
Anyway, I did some research and settled on the Energy Suspension bushings. (
8.3128 Front Control Arm Bushings).
Here's what comes in the kit:
Everyone seems to love Poly bushings, and from all the reviews, no residual noise, and everyone seems to claim that the ride is better. Skeptical, but let's see how it goes.
Anyway, I finally had some time blocked off my my crazy busy schedule to try it, so here goes.
I followed the instructions to a "t". They can be found here:
http://www.energysuspensionparts.com/Installation_Instructions/Energy_Suspension/17535.pdf.
First off, let's get these beautiful tires off.
Here are my current control arms and bushings.
Be sure to place matchmarks on the front and rear adjusting cams
before you start. You will need to use these matchmarks to reinstall
the lower control arms back in the same position after the new
polyurethane bushings are installed. Torque to 100 ft-lbs. Then have
the vehicle’s alignment checked by a certified technician . The
alignment must be within factory specifications.
Here's my "mark." (Really honey? You had ORANGE nail polish? Yikes.)
After pulling the LCA off:
A closeup:
Grind the flare that holds the inner washers in place
on the lower control arm. Only grind off about half
the thickness of the flare. Clamp the washer in a
vice then work the lower control arm back and forth
just enough to get the washer off without braking off
the flare. Washer will be reused on install.
I used these:
And ended up with this:
Do not remove the factory metal shells from the lower control arms,
they must be reused. The inner metal sleeves and washers on the
lower control arm must be reused. To remove the old rubber from
the factory shells and inner sleeves, apply light heat evenly around
the outside of the control arm outer metal shell, just enough to brake
the bond with the rubber. Do the same on the inside of the sleeves
on the lower control arms. When you see light smoke coming from
the sides of the bushing the bond should be broken. At no time
should there be any flames coming from the rubber, if there are any
flames, you need to back off with the heat. Just push the old rubber
and inner metal sleeve out. Let the outer metal shells and sleeves
cool off before cleaning. Use a wire brush to remove any remaining
old rubber. File off any sharp edges that will contact the new
polyurethane bushings.
This was the part I was most nervous about, but it went perfectly. The first time, I kept heating it up gradually, then trying to apply a lot of force. Didn't work. Gradually, I built up the courage to leave the heat on a little longer. (Good smoke coming from the edges of the bushings, then gently prying the bushing out. This took about 10 solid minutes of direct blowtorch to achieve. I used a laser thermometer at one point, and I could hear the rubber separate from the sleeve at about 500°. Don't be shy, and be quick to blow out any rubber that catches on fire.)
Smoking:
After prying (one hint here. See how I was able to apply heat towards the bottom of the picture, but not behind the connecting arm? The bushing stuck in place there, and it was a biatch to pry out later. On the second LCA, I spent some time heating up that arm, and the tube underneath that arm to get the whole bushing to pry out. Saved me a lot of time.)
Once the inner sleeve with bushing is pried out of the outer shell, I made a lengthwise cut with a boxcutter down the bushing. Then, I heated up the inner sleeve from the inside, stuck a screwdriver in the cut I just made, and peeled the bushing from the inner shell. Had I not made the cut, I would have had to slide the hot bushing off the shell. Much easier to peel. Then. Clean that sucker off.
Here's the inside of the outer sleeve, after cleaning with a wire brush.
Grease ID of shell in LCA. Grease all sides of the bushing that will contact metal and install the bushings. Grease and install sleeve with embossed washer. Install the embossed washer back over the flare and reflare using a ball bearing or ball pen hammer.
Well, I repeated this for the other side. It took me about 8 hours. 7.75 hours on Saturday, having gotten frustrated that I couldn't get the last of 4 bushings pressed in all the way, then 15 minutes on Sunday after I realized how to do it (I have a bench vise!!!).
As far as driving, I couldn't believe it was going to make a difference, but it does. The steering feels more positive, and the shimmy I keep attributing to warped rotors (even after replacing them) is GONE.
Highly reccomended upgrade. Just be ready for some effort.