Toyota 48131-AA331
Coil Spring, Front

The repair process for the front shock absorber with coil spring requires beginning by taking off the front wheel followed by disassembling the front stabilizer link assembly LH by removing the nut; if the ball joint spins with the nut then use a hexagon (6 mm) wrench to stabilize the stud. After removing the front wheel and disconnecting the front stabilizer link assembly LH by removing its nut, proceed to next steps. Models with ABS must disconnect the front flexible hose No. 1 and speed sensor front LH by removing their bolts while models without ABS can simply remove the bolt to disconnect the front flexible hose No. 1. Install the bolt to a stationary position while loosening the nut before removing the two lower bolts and two lower nuts from the front shock absorber with its coil spring. Afterward, take out the shock absorber assembly together with the coil spring while being cautious to avoid losing the two upper washers when the vehicle has a front suspension upper brace center. The front shock absorber with coil spring must be fixed in place by attaching two nuts alongside a bolt to the lower side bracket and placing it within a vise for security. Apply Special Service Tool: 09727-30021 to compress the front coil spring LH without impact wrench usage and then remove the front suspension support sub-assembly LH with its attached components front suspension support bearing LH front coil spring seat upper LH and front coil spring insulator upper LH front coil spring LH front spring bumper LH and front coil spring insulator upper I LH. The shock absorber assembly front LH undergoes examination by performing rod compression followed by extension tests to identify resistance abnormalities or this untypical noise; when issues arise replace the unit with a brand-new shock absorber. The installation process of the shock absorber assembly front LH requires users to place the front coil spring insulator lower LH onto the shock absorber assembly followed by attaching the front spring bumper LH to the piston rod while maintaining compression with Special Service Tool: 09727-30021 on the front coil spring LH. Place front coil spring LH with its lower end inserted into spring lower seat gaps followed by front coil spring insulator upper LH and front coil spring seat upper LH which should display marks at the outer side. Place a new front suspension support bearing LH together with the front suspension support sub-assembly LH so the marks face outward before locking the new nut loosely. For the installation of the front shock absorber with coil spring, position it as shown, install the 3 nuts on the upper side with specified torque values (80 Nm for TMC Made or 85 Nm for TMMK Made), ensuring not to drop the 2 washers if there is a front suspension upper brace center, then install the 2 bolts and 2 nuts on the lower side with a torque of 210 Nm, fully tighten the lock nut to 49 Nm, and for models with ABS, install the front flexible hose No. 1 and speed sensor front LH with a torque of 18.8 Nm; for models without ABS, install the front flexible hose No. 1 with the same torque. Install the front stabilizer link assembly LH with a 74 Nm torque on the nut while re-spining the front wheel to 103 Nm then check and adjust the front wheel alignment.

The overhaul process for shock absorber with coil spring starts with removing the front wheel then disconnecting the front stabilizer link assembly LH by untightening its nut. When the ball joint connects to the turning nut apply hexagon (6 mm) wrench to the stud. The next step requires loosening the lock nut of the front shock absorber with coil spring but only do so if you need to dismantle the shock absorber assembly front LH. Before proceeding with shock absorber overhaul, disconnect front flexible hose No. 1 with speed sensor front LH on models equipped with ABS but separate only front flexible hose No. 1 when ABS is not present. Detach the two bolts and nuts found on the lower front shock absorber with coil spring by stopping the rotation of the bolt but continue nut unfastening before removing the three upper-side nuts to extract the shock absorber assembly preserving both washers from potential falling when a front suspension upper brace center exists. The front shock absorber with coil spring installation requires securing two nuts and a bolt to the bracket at the lower side before placing it in a vise. Use Special Service Tool: 09727-30021 to squeeze the front coil spring LH without impact wrenches to prevent tool damage while removing the front suspension support sub-assembly LH, front suspension support bearing LH, front coil spring seat upper LH, front coil spring insulator upper LH, front coil spring LH, front spring bumper LH, as well as front coil spring insulator upper LH. Check the shock absorber assembly front LH by compressing then extending its rod to detect any irregular resistance or strange sounds; replace the shock absorber with an authentic new one if such issues occur. When disposing of the shock absorber assembly front LH you must drain the gas inside by drilling a hole into the cylinder after extending the shock absorber rod while being mindful of flying chip particles. The installation process starts with the front coil spring insulator lower LH placed onto the shock absorber assembly front LH followed by the front spring bumper LH installation onto the piston rod. Install the front coil spring LH into the shock absorber assembly front LH with the lower end positioned inside the spring lower seat gap before adding the front coil spring insulator upper LH and front coil spring seat upper LH which should have the mark directed outward. Fit the front suspension support bearing LH and mount the front suspension support sub-assembly LH outward with its mark visible before tightening the lock nut temporarily. Follow the provided illustration to install the front shock absorber with coil spring by screwing three upper nuts with 80 Nm torque (816 kgf-cm, 59 ft. lbs.) and keep watch for two washers that may fall if a front suspension upper brace center exists. Install two bolts and two nuts to the lower side using 210 Nm torque (2,141 kgf-cm, 155 ft. lbs.) while torquing the nut to stop the bolt from rotating until lock nut reaches 49 Nm (500 kgf-cm, 36 ft. lbs.). The installation of the front flexible hose No. 1 follows with 18.8 Nm (192 kgf-cm, 14 ft. lbs.) torque whether the model has ABS or not. The front stabilizer link assembly LH installation requires a torque of 74 Nm (755 kgf-cm, 55 inch lbs.) while using a hexagon (6 mm) wrench on the stud to prevent ball joint movement before applying torque. After stabilizer link assembly installation, install the front wheel at 103 Nm (1,050 kgf-cm, 76 ft. lbs.) followed by front wheel alignment check and adjustment.

Hold the stud with a hexagon (6 mm) wrench.