When to replace the belts for 2000 Camry?

According to the Gates website, this engine needs to have the belt
replaced at 90,000 miles, BUT time is also a factor.   Again, according
to this resource, yours is NOT an interference engine.

Some of the other engines in this time range show a 60,000 mile severe
belt replacement schedule.

Why replace the pump if it is not broken?  If you plan a long road trip,
then you could consider preventative maintenance, but it is not really
necessary if you just have a daily driver.

If you take it to a Toyota dealership, you will probably be charged
several hundred dollars for the belts, pump, etc.. Mine would only
be a guess but I would imagine $300-600 for this work.  Just a wild ass
guess.

Go to www.gates.com if you want to double check this info.,

One reason to replace the pump is that it is internal to the motor behind
the timing belt.  There should not be any more labor or atleast a very small
amount.  Think of it as insurance.
I replaced the pump on my 91 Camry when I had the belt changed.  This was
recommended by my mechanic, not a dealer.

That is certainly a good enough reason to replace an aging, but still
good, waterpump.

That is what I thought.  It may have cost $ 100 more, don't remember the
cost of a new one (not rebuilt).  I kept the car for almost 200,000 miles.
I did not put a belt or pump on it but once.  I had let it go for about
80,000 miles the first time.  I was going to buy a new car at some point and
that one had gotten old enought the trade in value was not very much so I
just let it go.  thought if it did laydown, I would not be out anything.  I
don't know how long the average water pump will last on a Toyota, but I
doubt it would be good for over 150,000.

If the pump was outside the motor like many cars are where it is not too
much trouble to change, then I would not have put a new pump on whenI
changed the timing belt.

I had the belts changed my my 2000 Camry LE 4 cyl at 180,000kms (just
after I bought it) I did not replace the water pump and according to
the maintenance history was the original one. I drove the car up until
about a month ago with 230,000 kms and never a problem from the pump.
just my $0.02