2007 XC 90 Front Strut & Spring Assembly

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
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ggleavitt
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Re: 2007 XC 90 Front Strut & Spring Assembly

Post by ggleavitt »

Follow-up on spring seats, they do go bad, and to a greater degree on the XC90 since it's high and heavy.

Relatively easy way to check is to shine a light between under the rubber washer and the center of the seat, look for obvious large cracks and tears.

Can also take off the top nylon nut cover and give the nut (21 or 22mm) a decent twist with a wrench, if it rotates to any real extent you'll need to replace the seat. Can see the most common failure mode (center tube separation) in the photos.

I'm sure aftermarket seats (IPD HD included) work great in other P2 variants, just not the XC90 in my opinion and especially not on an XC90 with a 33 spring. The 33 spring flexes the seat pretty hard, once the weight of the car is returned and everything settles down, the seat straightens out. I try to put the strut back relatively quickly on a seat replacement and I've learned the hard way that for this application, OE is best for function and longevity. The seat does not flex to any real extent with the 31 spring.

Edit 112218- add XC90 specific comment
Last edited by ggleavitt on Thu Nov 22, 2018 10:36 am, edited 1 time in total.
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ngarover
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Post by ngarover »

Great post. I'm wondering if it may be worth paying my shop guy to do the shocks since he has a full sized compressor. I have 2 compressors but they only work with regular spring shock setups. not rebuilding struts. Actually this is the style I have... https://www.amazon.com/gp/product/B00H9 ... UTF8&psc=1 which I used when I put HR lowering springs into my wagon...
IMG_20170429_161644748_HDR.jpg
ggleavitt wrote: Wed Nov 21, 2018 8:00 am There is another post by the same author on Swedespeed- https://forums.swedespeed.com/showthrea ... g-Assembly

XC90 has 3 springs and 3 struts called out, suspension code label (back side of passenger B-pillar) is key to determining correct fitment if this is a direct replacement.

I've done both my cars a couple times now, using slightly modified spring compressors (4- INA TWC1018, 2- INA TC1018)- https://goo.gl/photos/qJK3EtG8nc2VZzpz9, used it last weekend for compressing my rear springs to get bottom insulators on with a nivomat replacement, can see- https://forums.swedespeed.com/showthrea ... ear-shocks, post #16 for photos.

What I can suggest from personal experience is that doing a regular 31 spring is pretty straight forward, doing the Sport/RD 33 spring gets a touch scary at the end.

**My other suggestion is to use OE spring seats with the XC90, see photos for what mine looked like before they got replaced (in particular, see how long they did NOT last on my Sport)- https://goo.gl/photos/9nsqr2Xq5YZFpbvp9, https://photos.app.goo.gl/dQpZLeQMsyEMXXzz2

Edit 112118- Add **comment

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SuperHerman
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Post by SuperHerman »

On the XC90 I would go with OEM Spring seats as I said before. My choice of strut replacements was made b/c of costs and what life and mileage I want out of the car. If I can get 30k miles on them I am happy. It is a spare car.

For spring compression the first go I used the standard type, and it was scary. The second time I bought something like this:

https://www.turnermotorsport.com/p-3834 ... essor-set/

This style is much easier to use and safer. I have used it on a few cars now.

One option is to ask your shop if they will do the springs for you if you bring in the assembly. Still I would watch them as many shops hit everything with an air gun and while fine for taking it apart it is not for reassembly. This approach will also let you change out other parts while you have the suspension dismantled.

nyc1836
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Post by nyc1836 »

Thanks so much for everyone's help the car was checked out ends up the spring seat have to be changed.The problem is there are not to many people that do Volvo here in Houston Texas so the people want to charge as much as they want $140 for 2 Sachs parts and $288 labor which the same 2 Sachs cost $48 shipped.I understand they need to make living.
Beside having problem with traction light going on the car runs well we leave problem for another time sas or clock spring
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ggleavitt
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Post by ggleavitt »

I like the spring compressor mentioned by SuperHerman, seems like it would work lots better than the double set I've been using. I might put one of these on my Xmas list...
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nyc1836
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Post by nyc1836 »

I do have a decent mechanic that will probably charge me $75-$100 a side to change the seats I ordered the SACHS seat springs from Rock auto for $44 landed ARE THESE AS GOOD AS THE REINS?

nyc1836
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Post by nyc1836 »

should i get service kit like this or anything else i really didn't look if it had any or bad sachs service kit
https://www.tirerack.com/suspension/sus ... utoModClar

How do i know if I have ride controlled shock are they electronic?

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