The general consensus is to replace the hydraulic tensioner every second (140,000 mile) belt change, leaking or not. It's (relatively) cheap. I also had the rollers replaced but not the water pump. Have you ever seen the inside of a Volvo water pump? It's a serious water pump!
As for the OP, I'm not sure how helpful Volvo might be on a 10-year old car. They weren't awfully good at fixing stuff on mine when it was under the original factory warranty.
-BTC
'98 V70 T5 5-speed, 173k mi, heated velour cloth comfy chairs, factory HD suspension, Bilstein HD, front IPD stabilizer bar, Volvo strut tower brace and skidplate, XC grill, C70 jewel E-Codes, V-1, Lidatek, IPD stuff, JB Weld, Original Duck tape, zip-ties, two '06 Honda license plate nut impressions in back bumper (gift from daughter), Mobil-1 since new.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair." - Douglas Noel Adams (1952 - 2001)
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