2004 v70 timing belt at 100,000 km?

[qwertyjjj]

Car has 11 years, should the belt be replaced?
Manual only recommend 160,000km but some people seem to say 10 years.
Garage had a look but didn't seem to convincing when they said it might need to be done due to age (in other words out looks fine on visual inspection).

[Homebrand]

Here's the link to the volvo schedule for all models.

https://www.matthewsvolvosite.com/forums ... =9&t=71413

[oragex]

The standard procedure is indeed to replace the belt at 10 years because the rubber get stiffer.

In practice, it depends how the car was driven. If the driver was an older person who always accelerated slowly and had a relaxed drive, then the belt might still be good for another 50,000 km.

If willing to replace it only if necessary, remove the belt covers, and look closer at the surface with the engine off. Then crank the engine a bit and inspect again the surface exposed. Needs to be done to inspect fully all the length of the belt. Any small cracks means the belt is in need of replacement.

Just to mention, it is about a 1-2h job on this car. Very easy compared with other vehicles, and many of us here have done the job themselves.

The water pump is not replaced at this moment as with other vehicles, usually it lasts about 300,000km

[chrism]

Is there really any mechanical difference in the cam drive systems in 45 states vs the 5 mentioned "progressive" states? Under PZEV, auto manufacturers are required to warrant the emissions systems up to 150,000 miles. I'm guessing the T-belts got included, somehow, in that requirement. If that's the case, my suspicion is that Volvo simply said, "OK, in these 5 states the first T-belt is under warranty to 150,000 miles", knowing good and well there is really no difference in sprockets, belt, tensioner, etc. Think about it - what are the odds Volvo will have to pay out on failed belts under 150,000. Many times a belt will last that long, "just because". Secondly, there is probably an "original purchaser" clause in the warranty. Thirdly, if a belt snaps, for example, at 13 years old / 130,000 miles, how many owners would even THINK that it was still under warranty?

Any time I bought a timing belt or tensioner, I was never asked what state the car was originally sold in. And I really doubt there is any difference in the sprockets or other timing components that would allow those engines' belts to last longer. If someone can show me any mechanical (or part number) difference in timing systems of the 5 state cars vs 45 state cars, I'll gladly have crow for dinner. Until then, it's going to be 105,000 miles / 10 years for me. 150,000/15 years is flirting with disaster (IMHO).

[qwertyjjj]

The standard procedure is indeed to replace the belt at 10 years because the rubber get stiffer.

In practice, it depends how the car was driven. If the driver was an older person who always accelerated slowly and had a relaxed drive, then the belt might still be good for another 50,000 km.

If willing to replace it only if necessary, remove the belt covers, and look closer at the surface with the engine off. Then crank the engine a bit and inspect again the surface exposed. Needs to be done to inspect fully all the length of the belt. Any small cracks means the belt is in need of replacement.

Just to mention, it is about a 1-2h job on this car. Very easy compared with other vehicles, and many of us here have done the job themselves.

The water pump is not replaced at this moment as with other vehicles, usually it lasts about 300,000km

I've seen it recommended to do belt, tensioner, idlers, and also the water pump all at same time?

[oragex]

Indeed, most car makers suggest replacing the water pump each time a new timing belt is installed.
However, on these Volvo models, most Volvo dealers suggest replacing the water pump only at the second timing belt. First timing belt belt being replaced along with it's idler and tensioner.

[donc]

I seen the belts be fine and the tensioner loosen before the stated interval resulting in damage. For my peace of mind, a few extra dollars on a complete kit vs $2500 for an engine replacement and car rental is worth it.

[abscate]

Is there really any mechanical difference in the cam drive systems in 45 states vs the 5 mentioned "progressive" states? Under PZEV, auto manufacturers are required to warrant the emissions systems up to 150,000 miles. I'm guessing the T-belts got included, somehow, in that requirement. If that's the case, my suspicion is that Volvo simply said, "OK, in these 5 states the first T-belt is under warranty to 150,000 miles", knowing good and well there is really no difference in sprockets, belt, tensioner, etc. Think about it - what are the odds Volvo will have to pay out on failed belts under 150,000. Many times a belt will last that long, "just because". Secondly, there is probably an "original purchaser" clause in the warranty. Thirdly, if a belt snaps, for example, at 13 years old / 130,000 miles, how many owners would even THINK that it was still under warranty?

Any time I bought a timing belt or tensioner, I was never asked what state the car was originally sold in. And I really doubt there is any difference in the sprockets or other timing components that would allow those engines' belts to last longer. If someone can show me any mechanical (or part number) difference in timing systems of the 5 state cars vs 45 state cars, I'll gladly have crow for dinner. Until then, it's going to be 105,000 miles / 10 years for me. 150,000/15 years is flirting with disaster (IMHO).

The PZEV vehicles actually carry a different VIN Code than the other cars. I dont think there is any mechanical difference in the cars, agreed. My interpretation is different...the stock TB and accessories MTBF is well beyond 150000 miles.

[qwertyjjj]

How easy is it to change the pump out by itself if the pump is not changed with the belt, idler, and tensioner?
Pump is maybe $70? So, if they're taking everything off, does it save in labor to change it now or at 300k?

[JRL]

Almost the same labor so you would be nuts not to (do a belt)