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V8 Balance Shaft

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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Roger_850T
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Roger_850T

Re: V8 Balance Shaft

Post by Roger_850T » Thu Apr 04, 2019 2:52 pm

jimmy57 wrote:
Wed Jan 02, 2019 12:28 pm
They didn't ask me but it seems a better thing to do in the rear bearing saddle area is to take a Dremel or other tool with a burr and grind a groove down the bottom middle. There is a hole in the balance shaft case that goes into the hollow cavity already. If debris blocks the drilled one why have the water go to the mid point of bearing before it can run through the ground reliefs on saddle sides.
Hi Jimmy57,

Following up on this... Having completed this step, I don't think this clearancing is for drainage. The new hole will drain the space nicely. I think this clearancing is to allow the new bearing to slip in a little easier when you press it in. It was pretty tight, even with this done, and I couldn't get it to test-fit without removing this material.

Plus, the material removed does not actually go all the way through to the end. It's just removed where the bearing sits, and the aluminum that the outer race is flush to will still prevent drainage, so I'm certain it's not for drainage.

Cheers!

Roger


'05 XC90 V8 140k
'95 854T 310k
'02 V70 159k
'03 S80 111k (crashed)
'93 945T 217k (gone to be parted out)
'87 245 300k+ sold, still going
'84 264 Diesel, RIP at 160k
'78 242 manual everything.
'73 P1800ES, fun until the rust set in...

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Roger_850T
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Roger_850T

Re: V8 Balance Shaft

Post by Roger_850T » Sun May 05, 2019 4:48 pm

It's back on the road. Hooray! :D It took a while, primarily because we had a backup car, (it was merely inconvenient, not urgent,) and life gets in the way. All told, it took me 7 months. But that 7 months included new floor throughout the main level of the house, a day job, life with an active daughter, and just not working on it when getting home from work. But it's done!

The biggest problem was that I tore the rear valve cover gasket, and didn't realize it. I had to squeeze it in between the camshaft and the rear wiring loom, and didn't realize I tore it until the first test drive. On that test drive, I lost a quart of oil in 10 miles, all on to the rear exhaust manifold. (Oops.) I had to remove the intake manifold and rear valve cover to discover exactly what I had screwed up, then wait for parts (again) before getting it re-assembled a second time.

I'll post more details in the next couple of days, but I thought I'd share the good word that it's running again. And yes, I missed the V-8!

Roger


'05 XC90 V8 140k
'95 854T 310k
'02 V70 159k
'03 S80 111k (crashed)
'93 945T 217k (gone to be parted out)
'87 245 300k+ sold, still going
'84 264 Diesel, RIP at 160k
'78 242 manual everything.
'73 P1800ES, fun until the rust set in...

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bmdubya1198
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bmdubya1198

Re: V8 Balance Shaft

Post by bmdubya1198 » Sun May 05, 2019 7:45 pm

Glad to hear it's up and running!


2000 V70R Venetian Red/Charcoal M56 Swapped 188k
2001 S60 2.4T Black/Black 230k
2003 S60 2.4T Silver/Black 106k
2007 XC90 V8 AWD Sport Titanium Grey/Black 155k
1998 S90- Silver/Gray 207k
Sold-
1998 V70 GLT Black/Beige 193k
1995 850 GLT Tropic Green... crushed
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it

Need used parts? PM me!

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Roger_850T
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Roger_850T

Re: V8 Balance Shaft

Post by Roger_850T » Mon Jun 10, 2019 8:29 pm

Here's the list of parts that I ended up buying for the balance shaft bearing replacement. It's a word doc, because I couldn't paste from Excel and have it formatted reasonably nicely. Altogether $1,195 in parts.
There were a number of parts that I bought above and beyond what was minimally required for the work. They replaced wear items that were reasonable to replace while I had it all apart and they were easy. They were:

Water pump (with 140k on it)
Upper/Lower Radiator Hoses (140k on them)
Fuel Injector Seals (140k on them)
Aux belt and idlers (with 35k on them)
Spark plugs (had 35k miles on them)
Front main crankshaft seal

I ended up replacing the rear valve cover gasket twice, because I managed to tear it when squeezing it under the wire loom. I was more careful the second time around!

Roger


'05 XC90 V8 140k
'95 854T 310k
'02 V70 159k
'03 S80 111k (crashed)
'93 945T 217k (gone to be parted out)
'87 245 300k+ sold, still going
'84 264 Diesel, RIP at 160k
'78 242 manual everything.
'73 P1800ES, fun until the rust set in...

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bmdubya1198
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Joined: Tue Dec 30, 2014 10:45 am
Year and Model: '98 V70 GLT
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bmdubya1198

Re: V8 Balance Shaft

Post by bmdubya1198 » Mon Jun 10, 2019 9:51 pm

Great info, thanks for posting that list! I'm going to need to take care of the timing cover gasket on my mom's V8 soon, and I want to replace everything I can while I'm in there. At 153k miles, most anything in that area is due for replacement anyway.


2000 V70R Venetian Red/Charcoal M56 Swapped 188k
2001 S60 2.4T Black/Black 230k
2003 S60 2.4T Silver/Black 106k
2007 XC90 V8 AWD Sport Titanium Grey/Black 155k
1998 S90- Silver/Gray 207k
Sold-
1998 V70 GLT Black/Beige 193k
1995 850 GLT Tropic Green... crushed
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it

Need used parts? PM me!

allrotor13b
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Year and Model: 2005 XC90 V8
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allrotor13b

Re: V8 Balance Shaft

Post by allrotor13b » Tue Jun 11, 2019 10:29 pm

Hi, i was wondering if you could help me find this ground's home: It's the one that lands on the right strut tower under the power steering and coolant reservoirs.
Image
i hope it isn't going somewhere i have to remove a head to land :(



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bmdubya1198
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bmdubya1198

Re: V8 Balance Shaft

Post by bmdubya1198 » Wed Jun 12, 2019 8:37 am

allrotor13b wrote:
Tue Jun 11, 2019 10:29 pm
Hi, i was wondering if you could help me find this ground's home: It's the one that lands on the right strut tower under the power steering and coolant reservoirs.
Image
i hope it isn't going somewhere i have to remove a head to land :(
The image link isn't working. Is it on Google Photos? Try sharing it with the "share" option and select "create sharable link".


2000 V70R Venetian Red/Charcoal M56 Swapped 188k
2001 S60 2.4T Black/Black 230k
2003 S60 2.4T Silver/Black 106k
2007 XC90 V8 AWD Sport Titanium Grey/Black 155k
1998 S90- Silver/Gray 207k
Sold-
1998 V70 GLT Black/Beige 193k
1995 850 GLT Tropic Green... crushed
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it

Need used parts? PM me!

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ggleavitt
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Joined: Sun Jun 04, 2006 11:33 pm
Year and Model: XC90 05-2.5T, 08-V8S
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ggleavitt

Re: V8 Balance Shaft

Post by ggleavitt » Thu Jun 13, 2019 1:34 pm

Not sure if this is what you're looking for-
XC90 V8 Ground PassSide_1.jpg
XC90 V8 Ground PassSide_1.jpg (279.12 KiB) Viewed 149 times
XC90 V8 Ground PassSide_2.jpg
XC90 V8 Ground PassSide_2.jpg (193.69 KiB) Viewed 149 times
Have a link with some more photos in the even it's helpful- https://goo.gl/photos/tcLSKkYEp6KqkbaR9
These users thanked the author ggleavitt for the post:
allrotor13b


2005 2.5T AWD-195k
2008 V8 AWD Sport-125k

allrotor13b
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Year and Model: 2005 XC90 V8
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allrotor13b

Re: V8 Balance Shaft

Post by allrotor13b » Thu Jun 13, 2019 2:19 pm

ggleavitt wrote:
Thu Jun 13, 2019 1:34 pm
Have a link with some more photos in the even it's helpful- https://goo.gl/photos/tcLSKkYEp6KqkbaR9
It's this one:
Ground.JPG
Thank you very much!



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Roger_850T
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Joined: Tue Dec 31, 2013 11:55 am
Year and Model: 854T 1995
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Roger_850T

Re: V8 Balance Shaft

Post by Roger_850T » Fri Jun 14, 2019 8:40 pm

bmdubya1198 wrote:
Mon Jun 10, 2019 9:51 pm
Great info, thanks for posting that list! I'm going to need to take care of the timing cover gasket on my mom's V8 soon, and I want to replace everything I can while I'm in there. At 153k miles, most anything in that area is due for replacement anyway.
How's the timing cover gasket? If you're going that far, you might as well do the timing cover as well, including the front crankshaft seal.

What year is your mom's V8? 2005 was the bad year for the balance shaft bearing, and supposed to be fixed 2006 and later. But if you're in there that far, it's worth at least planning to shine a light down at the back of the bearing and inspecting. Having done it once, I'm a little cynical about the back bearing lasting "forever", although people don't complain about it, so maybe it does. But I'd at least look. If your mom's engine IS a 2005, you should seriously consider "drilling the hole" if you're in there that far.

Feel free to ping me if you have specific questions. Email is best, as sometimes it's intermittent when I'm online.

Roger


'05 XC90 V8 140k
'95 854T 310k
'02 V70 159k
'03 S80 111k (crashed)
'93 945T 217k (gone to be parted out)
'87 245 300k+ sold, still going
'84 264 Diesel, RIP at 160k
'78 242 manual everything.
'73 P1800ES, fun until the rust set in...

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