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Installing a rear IPD sway bar ('04 XC70)

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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BlackBart
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Installing a rear IPD sway bar ('04 XC70)

Post by BlackBart »

After I finished my front bar and took a mental break (and my wife took it on an uneventful 600 mile trip - fingers uncrossed), I tackled the rear bar.

I followed the simple and seemingly self-explanatory IPD directions, but I had some trouble, and maybe those were written for several different cars with variations. Oh, yeah, it says S60AWD, V70AWD, XC70, S60R "trac spec", rear bar upgrade V70R, and "trac spec" V70R. Many of the socket sizes in the text were not correct on my car.

Their recommended list of 6 tools needed was a fraction of the things you'll reach for.

SO...back of the car up as high as you can get it safely, blocked and jack-standed well. I often put a floor jack up snug as an extra back-up. It appears that it's pushing up - it's not.
1 UP!.jpg
2 UP.jpg
I had access to two big floor jacks, lots of jack stands, and my mother-in-law's empty garage.

Midship exhaust strap loosened and spun to clear the main exhaust trunk.
3 exhaust strap.jpg
You pop the forward wagon floor off, the soft cover below that, foam insulation, and expose the bolts of the spring/shock tower on the LEFT side (did they flip a coin?). Undo the single bolt with a crescent-shaped washer.

Pull the wheels.

Pop the two parking brakes cables loose - there are bolts into the subframe and some clips on the rear toe link arms.

Pop off the three rubber donuts on the exhaust (I sprayed some silicone spray in the holes), and carefully lower the rear of the exhaust onto a jackstand. Leave the front connected.

My car has no "plastic lower control arm covers" to remove. So I didn't.

Remove the big bolt holding the bottom of the shock tower to the control arm. Slide the shock mount off the tubular mount arm on the side of the control arm. This took some force with a deadblow hammer and blunt chisel. BOOM, it popped.
They suggest you might have a helper stand on the hub to press down the suspension. That would mean holding your foot on an inch and a half of round brake tophat and holding onto the roof rack for balance (that's with the parking brake on). Nope.

Remove all the sway bar bracket bolts from the subframe.

Remove the end link hardware from the bar. I'd say you'd have an easier time doing this before the subframe brackets are loose and the bar is flopping around. And you'll need a #40 torx bit and a big box end wrench (18?).

Looking up with a light to the top of the shock tower, remove two 14mm bolts that hold the aluminum casting to the body. You'll need a long extension to reach them. Mark their position first, they have slotted holes.

I used a spring compressor thinking this would take load off the tower, but I'm not sure it helped. It also got the shock and the spring off-center from each other and they conflicted with other things under there. A coil kept binding on a steel tab on the trailing arm.
5 spring squeeze.jpg
Spring tower loose... the spring and the shock do not get removed.
6 release spring tower.jpg
The spring tower can flop around some, move down, move forward for room.

Make a mental note or a picture of the bar orientation before it comes out. Don't bolt it in upside down just FYI.

They then say the right side end of the bar upward and forward to clear the right control arm. Then the left side moves past the shock tower (under the shock tower?) and clears the control arm. Wiggle the spring tower around to help. It did not clear anything. I found this was a wrestling match, twisting and banging things around. But it came out, sideways out the left side.
Shoe box to rest your head on while looking up, spare plastic lens LED shop lights to point light up where you need it.
7 old and new.jpg
To install, you have to fight the thing through and around the shock tower, the control arms, the floor, the subframe, until it's across the car. I left the plastic on it to not bash up the paint. Oh, it has to be ABOVE the parking brake cables in the center.

Use their green silicone grease in their syringe, splitting it evenly between the left and right bushings. The bushings are split, so you can open them up to smear it around evenly and pop them over the bar from below.
8 grease.jpg
9 bushing.jpg
Install the provided clamps (inner and outer sleeve) over the bushing and bolt them down to the subframe with the new provided hardware. Nice to have all new bolts.

Here's where it got fun! Maneuver the shock tower up and line up the bolts and re-install. Line up your paint marks around the washers. Torque them up.

Install the lower end of the shock tower over that big pin mount on the lower control arm. Except that location is now 3 to 4" apart vertically and there's big tension on the hub and control arms. I tried to compress the spring with my compressor, but it wasn't shortening the tower much. My "helper" wasn't going to stand on the hub and move it down that far. I tried everything, I had big crowbars pulling every which way with my three arms. I tried a floor jack under the shock tower but it just lifted the car up. I couldn't get them close enough together to dream of popping the shock mount on. I undid the top shock tower mount again so it would drop down - nope, everything was in the way and it didn't help. I used a long crowbar from the top of the spring tower to a flat spot on the upper control arm and stood on it, and got them within an inch of each other......

So I went home to eat dinner and sulk. Am I doing it wrong?...they sort of skip over the tension involved.

I asked Mrs BB if she'd come over and help pull on one of the crowbars. We figured out that if one person set out on the end of the long crowbar with all their weight, hoping it didn't slip, we could get it low enough while I pried to keep the two pieces from binding on each other as they passed. After a half hour of this, I got them to pop together and quickly grabbed a deadblow hammer to bash it onto the mount and put the bolt back in. I seem to fix cars with perseverance, not because I know what I'm doing.

The rest of it was just bolting everything back up. The end link bolts had to nearly fold 90 to get them through the holes - I would have connected them while the bar was still loose. I found that my end links are pretty much shot - should have ordered those with the bar, duh. Plenty of anti-seize because they'll be off again soon. Note the end links rub on the parking brake cable housing - don't like that.
10 end link.jpg
Raise the exhaust (surprisingly heavy), spray those donuts, and pop the hangers back on. Discover the top of your big rear muffler is getting pretty rusty. Forward muffler strap back on and tight. Bolt up the parking brake cables and put them in their clips on the toe link arms.
11 exhaust and parking cables.jpg
Crawl around with a light and make sure all the hardware and systems are back in place and torqued. OH, you almost forgot that little bolt inside the rear floor with the crescent washer. Reinstall all the foam and liners in there.
12 bar bolted.jpg
13 right side.jpg


Wheels on, lugs torqued tight, down boy!
14 down boy.jpg

And wow, it goes around corners flat!

I'd like to know if I was missing something and it shouldn't have been so difficult to get the shock tower attached.
ex-1984 245T wagon
1994 850T5 wagon
2004 XC70 wagon BlackBetty

scot850
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Post by scot850 »

Nope. It's a bugger!

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
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Blacklab467
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Post by Blacklab467 »

This is probably the easiest/ safest way to spread the control arm to reinstall the strut, it also works on the other side and for reinstalling new struts using the factory jack from the trunk. You can also use this method if you're working solo.
IMG_0541.jpg
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2003 XC 70 (sold)
2007 XC 70, 1970 Dodge Charger R/T.

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Post by abscate »

:-D
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Post by erikv11 »

Great documentation, thanks BB!

I am interested - what motivated you to replace the sway bars? What's your impression of the ride now?

I like the factory jack suggestion for lowering the control arms, hopefully I'll remember to try it next time I need to do P2 rear shocks.

I was okay working solo by using a 2-inch wide ratchet strap on the control arms, but the enormous tension in the straps gets a little scary (pic from viewtopic.php?p=588749 is still upside down oops):

Image
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
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Post by BlackBart »

Blacklab467 wrote: 05 Aug 2025, 05:08 This is probably the easiest/ safest way to spread the control arm to reinstall the strut, it also works on the other side and for reinstalling new struts using the factory jack from the trunk. You can also use this method if you're working solo.
Wow! And that’s never slipped and killed someone? But that’s me, in the garage out of reach of a phone with big tensions! I seem to lean towards the cave man method to solve things.
ex-1984 245T wagon
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Post by BlackBart »

erikv11 wrote: 05 Aug 2025, 08:16 Great documentation, thanks BB!

I am interested - what motivated you to replace the sway bars? What's your impression of the ride now?

I was okay working solo by using a 2-inch wide ratchet strap on the control arms, but the enormous tension in the straps gets a little scary.
Now there’s another very clever idea! As long as you’re using serious commercial truck level straps, it should work.

Only a couple of brief twisty side street tests so far, but it’s MUCH flatter in turns. The XC is that much taller than a FWD, so there’s more mass up high with that lever arm. And I think these more modern Volvos are engineered to feel softer and more luxurious. This makes it firmer and more solid is my first impression.
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Post by abscate »

BlackBart wrote: 05 Aug 2025, 10:33
erikv11 wrote: 05 Aug 2025, 08:16 Great documentation, thanks BB!

I am interested - what motivated you to replace the sway bars? What's your impression of the ride now?

I was okay working solo by using a 2-inch wide ratchet strap on the control arms, but the enormous tension in the straps gets a little scary.
Now there’s another very clever idea! As long as you’re using serious commercial truck level straps, it should work.

Only a couple of brief twisty side street tests so far, but it’s MUCH flatter in turns. The XC is that much taller than a FWD, so there’s more mass up high with that lever arm. And I think these more modern Volvos are engineered to feel softer and more luxurious. This makes it firmer and more solid is my first impression.

You need this guy....Igor fix....
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Post by BlackBart »

So it's NOT just me with a giant pry bar!
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Post by BlackBart »

Genuine Volvo trunk tool kit contains a Harbor Freight spud bar?
ex-1984 245T wagon
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