at what miles should water pump be replaced on my 2005 4runner sr5 v6? on 2005 Toyota 4Runner

my truck has a chain for timing if thats any help. the manual suggest changing water pump when timing belt is repaced.should i wait longer since i have a timing chain to replace water pump?miles?

Asked by for the 2005 Toyota 4Runner
good preventive maint should be approx 90k miles unless it leaks b4 that