A reversible locking device 1 for a tensioner 100 of a timing chain 20 includes a locking device body 3, integral with the tensioner 100 and protruding with respect to the body of the tensioner 100, which has a shaped slot 2. A perforated protrusion 4 is integral with the shoe 5 carried by the piston 6 and protrudes with respect to the shoe 5 so that its hole is aligned with the shaped slot. A rod 7 has a first part 8 with a shape complementary to that of the shaped slot 2 and a second part 9 bearing at one end a conical portion 10 adapted to couple it irreversibly to the perforated protrusion 4 integral with the shoe 5.

Reference to Related Applications

This application claims an invention, which was disclosed in European application number 05 425 542.7, filed Jul. 25, 2005, entitled "REVERSIBLE LOCKING DEVICE FOR A TIMING CHAIN TENSIONER". The benefit under 35 USC.sctn.119(a) of the European application is hereby claimed, and the aforementioned application is hereby incorporated herein by reference.

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