Timing chains are designed to last the life of the engine. A timing belt however should be changed around 100K.
chain
timing chain
The 3.5 liter V6 engine in a 2005 Toyota Avalon has a timing CHAIN
1997 Avalon has a belt
The 3.0 liter V6 engine in a 2001 Toyota Avalon has a timing BELT
Belt.
belt
2.5 or the 3.5 both use a chain.
No, timing chain doesn't need replacing.
no you do not have to change the timing chain when changing the water pump.
I need diagram on changing the timing chain
According to the Gates website ( they make timing belts etcetera ) The 3.0 litre V6 engine in a 2000 Toyota Avalon has a timing BELT