Patent ID: 7775921

Claim:
A chain tensioner arrangement comprising an engine cover having a cylindrical mounting hole having a bottom and formed with an oil passage that opens to said bottom of said cylindrical mounting hole, a cylindrical housing having an axis and formed with a cylinder chamber, said housing having a bottom at a rear end thereof, a plunger slidably mounted in said cylinder chamber, a spring mounted in said cylinder chamber for biasing said plunger outwardly, said housing having, in said bottom thereof, an oil supply passage communicating with a pressure chamber formed at the back of said plunger, said axis of said housing extending through said oil supply passage, whereby a push-in force imparted to said plunger can be damped by hydraulic oil supplied to said pressure chamber through said oil supply passage, wherein said housing and has a substantially uniform outer diameter over the entire axial length of said housing, and wherein said rear end of said housing is inserted in said cylindrical mounting hole of said engine cover, such that said oil supply passage communicates with said oil passage.