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Timing Belt and Drive Belt questions V70-XC70

posted by  someone claiming to be cn on  Wed Oct 29 04:39 CST 2003 [RELATED]

Hello everyone,

I have read Volvospeed.com Bay 13 on timing belt tips etc. Here are my questions that I hope someone can help:

1. Serpentine Belt:
What is the expected life? I am planning to do my TBelt at 50-60K interval, so to me it makes sense to change the Serpentine Belt at the same time because the sepr. belt is removed for the Tbelt job anyway.

2. S.Belt pulley:
Is it enough to put more grease in the pulley or do I need a new one at 50-60K interval?

3. TBelt:
I will change my belt at 50-60K interval.
Do I need to do anything for the water pump while I am there?
What is the life of a water pump for a S70/V70 series?

4. TBelt tensioner:
2 versions that year...hydraulic versus mechanical
Let's say the car is equipped with hydraulic tensioner, can a mechanical tensioner be fitted? From my reading, mechnical tensioner seems better but I may be wrong.


The bottome line here is that while I am there doing this labor-intensive job, I amy as well change anything that is needed to be changed so later I do not regret.


cn
1998 (Production date before March 1998) V70 45K miles








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    Timing Belt and Drive Belt questions V70-XC70

    posted by  someone claiming to be Ray N. on  Wed Oct 29 04:48 CST 2003 [RELATED]

    1. 60K replacement intervals for serpentine belt. I use the tool from
    www.ipdusa.com to remove it. When putting a new one back on a tip
    is to pull the tensioner back just a bit manually. It has a pin
    that locks it "open" but if you manully pull it a bit more you get
    just a little more slack that makes it easier to put back on. (This
    makes more sense when you actually do it.)

    2. I don't think there is any way to service (grease) the pully.
    It should be fine for the first change. Both were on my 850 and
    S70 when I changed the timing belt.

    3. Water pump should be visually inspected for leaks. If there are
    no leaks you can leave it alone. Should be fine til the second
    timing belt change (when I would give it more scrutiny).

    4. I don't think they can be inter-changed. I'd leave it as it came
    from the factory since a failure destroys large parts of the engine.
    Also, the mechanical one has a longer service life and you seem to
    be changing the belt early so the longer life would not mean much
    with your conservative approach.

    The cover for the timing belt comes off with one bolt in about a
    minute. You can pull it off and inspect the belt for wear. You
    can also see the tensioner and water pump wit the cover off. You might
    have a look and if it looks fine schedule the service more towards
    60K miles. Note that some say replace at 5 year intervals and you
    are probably at that point, too (so a quick inspection might not be
    a bad idea now). Use a flashlight to make sure you get the timing
    cover back on correctly. Getting it back is harder then removing it.
    You basically don't want it rubbing any moving parts.






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