02/08/2021 Belt tensioner replacement: T43173 and T43139 back plate cracking The Gates timing belt tensioner T43173 is used in a wide range of Volvo models and some Ford models with 2.0, 2.3, 2.4 and 2.5 litre gas engines. Some mechanics have encountered problems either with this tensioner or with the T43139 tensioner, which is very similar in design. More specifically, they have reported cracks in the tensioner back plate. While the problem is often assumed to be a manufacturing defect; closer examination of the cases in question has brought to light a common installation error, which we tackle in this article. More 01/08/2021 Cooling system maintenance and the dangers of mixing coolant More 01/07/2021 The role of the positive crankcase ventilation valve (PCV) More 01/06/2021 Electric water pumps: main uses in combustion engines, hybrid and electric vehicles More 22/04/2021 Map-controlled thermostats: operation and problem diagnosis More Read More News Discover Gates TechZone Watch this video and discover what information you can find on this technical portal for professional car mechanics. A higher level of tech support with Gates! To help increase workshop efficiency and reduce the number of expensive warranty claims, we provide installers with better system and product know-how.