Figure 12.21. Location of the nuts securing the upper and lower wishbones to the rear steering knuckle on models before 2001
On pre-2001 models, remove the cotter pin, loosen the nut, and separate the upper control arm ball joint pin from the rear steering knuckle (figure 12.21). If the ball joint pin does not separate by hand, remove it using a puller.
Figure 12.22. Location of the upper control arm mounting bolt to the rear suspension trailing arm bracket on 2001 and later models
On pre-2001 models, remove the nut and bolt securing the upper control arm to the bracket on the rear trailing arm (figure 12.22).
Loosen the nut and remove the upper control arm inner mount pivot bolt.
Remove the upper control arm from the vehicle.
Check the condition of the lever. There should be no cracks or deformations on it. The bushing must not have any wear, delamination or hardening of the rubber.
On pre-2001 models, check the condition of the upper control arm ball joint by clamping the control arm in a vice. Tilt the ball joint pin as far as it will go in one direction and then screw the nut onto the pin. Using a torque wrench, rotate the ball joint pin (one revolution every 2–4 seconds), and at the fifth revolution, measure the turning torque, which should be at least 0.7 N·m. Otherwise, replace the upper control arm.
[The information was taken from a web portal: Toyotaman.ru]
Installation is carried out in the reverse order of removal.