Service and repair operations for the leaf spring of RZN191L-TRPDKAB, RZN196L-CRPDKAB and PZN196L-PRPDKAB, VZN195L-CRPDKAB, VZN195L-PRPDKAB models need to start by placing safety stands under the body as you lower the axle housing to release leaf spring tension. Detach the rear wheel before tightening it to 110 Nm (1,150 kgf-cm, 83 ft. lbs.). To begin rear shock absorber and parking brake disconnection service engineers should first unscrew the bolt and apply torque of 26 Nm (260 kgf-cm, 19 ft. lbs.) for 2WD (except PreRunner) or 71 Nm (730 kgf-cm, 53 ft. lbs.) for 4WD and PreRunner models. Begin by first removing the 4 U-bolt mounting nuts and washers before taking out the spring seat along with U-bolts under a torque of 123 Nm (1,250 kgf-cm, 90 ft. lbs.). Always check that the U-bolts maintain equal length during installation. The spring bumper should be removed when working on 4WD and PreRunner vehicles. Starting with the hanger pin bolt and nut along with washer, apply the specified torque of 157 Nm then proceed to remove the shackle pin plate together with the rear leaf spring by taking off the 2 shackle pin mounting nuts and washers using 92 Nm torque. Special Service Tool: 09550-10013 (09252-10010, 09553-10010) functions together with a press to replace the front eye bushing while Special Service Tool: 09950-60010 (09951-00350) and 09950-70010 (09951-07150) press out the inner tubes and rubber parts followed by tapping out outer tubes with a chisel and hammer before installing new bushings with Special Service Tool: 09710-28012 (09710-07062), 09710-30041 (09710-03211) and a press. The procedure for leaf spring replacement starts by prying up the spring clip before removing the center bolt. Then replace the spring clip through drilling the rivet head and adding a new rivet before installing the spring center bolt with a torque of 44 Nm (450 kgf-cm, 33 ft. lbs.) while bending the spring clip back into position. Users should replace the spring bumper of 2WD (except PreRunner) vehicles by torquing 2 bolts to 29 Nm (300 kgf-cm, 22 ft. lbs.). The technical installation process starts by doing what was done in reverse order when removing components.