raq1025 Posted July 30, 2003 Share Posted July 30, 2003 Anyone know if there is a torque spec for the nut on the upper ball joint that the cotter pin goes through? This is for a 1992 LS400. Quote Link to comment Share on other sites More sharing options...
VMF Posted July 30, 2003 Share Posted July 30, 2003 Remove upper suspension arm. Move ball joint stud back and forth five times, then install nut. Using torque wrench, turn nut continuously one turn per 2-4 seconds and take torque reading on fifth turn. If torque reading is not 9-30 in. lb. , replace upper suspension arm and ball joint. Quote Link to comment Share on other sites More sharing options...
obergc Posted July 30, 2003 Share Posted July 30, 2003 Fpr 93 LS400 it is 48 ft lb for the upper ball joint x steering knuckle and it is 112 ft lb for the lower ball joint x lower arm. Assume that the values are the same for the 92 but not certain. Curt Quote Link to comment Share on other sites More sharing options...
VBdenny Posted July 30, 2003 Share Posted July 30, 2003 Wait a minute, you guys kind of lost me. I was told by the dealer that you HAD to replace the whole upper control arm to replace the ball joint. Is it possible to replace just the ball joint? I have all the pickle forks which I used on many vehicles over the years to replace ball joints, nor do I ave any problems with undertaking such a job. Let me know please. Denny Quote Link to comment Share on other sites More sharing options...
jzz30 Posted July 30, 2003 Share Posted July 30, 2003 not through lexus you cant but maybe an aftermarket maybe moog? give them a call and let us know :D Quote Link to comment Share on other sites More sharing options...
raq1025 Posted July 30, 2003 Author Share Posted July 30, 2003 Thanks to all. It was just the upper I was curious about. I replaced the struts on the car and had to free the ball joint from the spindle to get the fronts in. I wanted to make sure I had them tightened enough. I torqued them to 50ft/lbs which is a little over. It is my understanding that the upper balljoint is formed into the control arm and cannot be pressed out. The lower balljoint is also formed into the arm it is attached to, though I don't know the name. The upper control arm is a dealer only part. The lower balljoint is comon to another Toyota product and can be purchase from another manufacturer. Quote Link to comment Share on other sites More sharing options...
wolver1ne516 Posted December 20, 2003 Share Posted December 20, 2003 try daizen.com or tm enginering or even sewell lexus.com and AllJapaneseCars.com Quote Link to comment Share on other sites More sharing options...
jzz30 Posted December 20, 2003 Share Posted December 20, 2003 the lower ball joint is a separate piece from the lower arm so it can easily be changed. Quote Link to comment Share on other sites More sharing options...
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