portion 88 of the output member the detent portion 88 of the output member 24 is proximate to the second end 40 of the input member 22 the output member 24 has a cavity 92 in the detent portion 88 centered about the steering gear axis of rotation 28 the cavity 92 is sufficiently large to accommodate the insertion of the second end 42 of the tubular stub shaft 36 a blind hole 94 at a bottom 96 of the cavity 92 accommodates insertion of the second end 62 of the torsion rod 58 into the output member 24 the cavity 92 has radial splines 97 complementary to the splines 68 of the stub shaft 36 which limit relative rotation between the output member 24 and the stub shaft 36 to 3 u00b0 the detent portion 88 of the output member 24 has sockets 98 corresponding in number and location to the detent recesses 66 in the tubular stub shaft 36 the sockets 98 lie in a plane perpendicular to the steering gear axis of rotation 28 and are oriented radially about the steering gear axis of rotation 28 spheroids 100 or detent engaging elements are disposed in the sockets 98 and protrude beyond the sockets 98 even when the spheroids 100 are pressed into the detent recesses 66 when the sockets 98 are aligned with the recesses 66 in the tubular stub shaft 36 the spheroids 100 simultaneously protrude uniformly beyond the detent portion 88 of the output member 24 an annular piston 102 has a piloting portion.