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V.V.T. hub and cam sprocket alignment

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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crankycar
Posts: 28
Joined: 15 September 2016
Year and Model: 2004 XC70
Location: Osoyoos BC

Re: V.V.T. hub and cam sprocket alignment

Post by crankycar »

This is Crankycar, named after my crankycar, was being a pain, she is running like a Champ now, but still need to go in and retime to see if it will turn over by hand when set to factory marks, now it is one tooth off , as that is the only place it would hand turn, from my conundrum I would suggest you go thru the procedure that F259 shows, it is no worth the try and bend valves if not already, I took a piece of 1/2 pex tube and sharpened the end and used my mouth to blow in on the combustion chambers thru the spark plug hole, mind you I had the valve cover/cam cover off so all valves were closed, I had no bent valves as I had no leakage, but I am saying you would be very blessed if you do not have damage, as with no bolts it would be so easy for the cam to stay being behind the sprocket rotation..

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F250
Posts: 126
Joined: 18 June 2016
Year and Model: 2007 S60 2.5T
Location: Alabama
Been thanked: 1 time

Post by F250 »

crankcase wrote:...
The PDF is huge resource, and thank you so much for taking the time to do it!


Great. I hope it really helps you.

crankcase wrote:...The threads where the bolts screw into are in sad shape. Do you think I could
use a little thread lock to test it, or possibly as a permanent fix?

My first time trying to re-bolt, I would estimate I put the new bolts on to about
10 ft-lbs. That's about what I felt comfortable with given the state of the threads.
If you use Loctite, use the blue which is not "permanent", but will certainly increase the bolt thread holding power.

Before using Loctite, though, I would get a tap and chase the threads to get a feel for how much meat there is left on them. They may just need cleaning up a bit on the first thread or two. I do not know the bolt size or thread pitch, but if you take it to a place like Home Depot or Lowes, they have a thread guide where you can identify what you have, and then get a tap if you don;t already have one that matches.

crankcase wrote:...Any chance someone could supply me with the rated torque for the 3 little bolts?
I have the yellow hub, but can get the numbers off the hub if needed.
If I recall correctly, I believe those bolts are specified for 10 Nm, which is 7.4 lbs-ft. If you can get 10 ft-lbs, that indicates that the threads are in good condition and you should have no issue with them.
______________________________
Pete - '07 S60 2.5T, Gray FWD (Daughter's car)
My Garage includes '02 F250 7.3L Diesel w/285K, '03 Excursion 7.3L Diesel w/196K, '06 Outback Limited 2.5L w/228K, '99 4Runner 3.4L 2WD w/220K

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