1997 Legacy GT wagon, DOHC. I had the engine die at about 75k miles 9 years ago (the car was 8 years old at the time). The mechanic who serviced the car back then didn't know how it happened but the timing belt jumped and caused valve damage. The timing belt, water pump, pulleys, etc, were replaced. Now I have 120k miles on the car and though it's way before the suggested 105k mile replacement, I was wondering if the 9 year interval meant that I should replace it again. You can see I don't put lots of miles on my car but considering the expense of having a similar failure, I'd rather do it before another failure occurs, which leads me to the topic title. I've watched lots of videos and read through many posts on how to replace the timing belt. I think I can do the job myself. In looking at the service manual, the parts blow up of the timing components show that the tensioner and the idler that sits on top of it are separate parts. If I buy a tensioner, do I also have to buy the idler separately (assuming it needs changing)? I have found some confusing results doing an internet search for "tensioner". This link http://www.autoparts...ioner-1997.html shows two possibilities. One looks like a toothed gear (not what the service manual shows) the other looks like a smooth pulley. This link, http://www.carpartsd....html?3594=2040 shows a combination of the tensioner with the idler already mounted on it and then it has them as individual parts. Can someone please help me sort this out?
Thanks for your reply.