How to remove and replace the rear shock absorber in a 1999 to 2005 Toyota Yaris. When refitting the nuts to the upper end of the strut, install the lower nut and tighten it until the piston rod protrudes about 15mm to 18mm through the nut and then, while holding the lower nut in place, tighten the upper nut against the lower nut to 25 Nm (18 foot pounds). The lower strut mounting nut should be torqued to 49 Nm (36 foot pounds).