OEM 2007 Toyota Sienna Shock Absorber

2007 Toyota Sienna Parts Questions & Experts Answers

• Q: How to service and repair the front shock absorber and coil spring on 2007 Toyota Sienna?

  A: The first steps for repairing the front shock absorber with coil spring require removal of the front wheel together with the front wiper arm head cap and both front wiper arms. First detach the wire harness then remove nine bolts alongside the cowl top brace to extract the cowl top ventilator louver sub-assembly, windshield wiper motor & link assembly and the cowl top panel sub-assembly outer front. Discard the front stabilizer link assembly LH by separating the nut from the shock absorber assembly front LH and disconnecting it using a hexagon wrench when the ball joint spins with the nut. Connect a wrench to the front shock absorber coil spring lock nut but do not remove it. Then remove the front flexible hose No.1 and speed sensor front LH followed by the two lower and upper side nuts and bolts on the front shock absorber coil spring before extracting it. Apply 2 nuts and 1 bolt to secure the front shock absorber with coil spring in a vise before using Special Service Tool 09727-30021 (09727-00010, 09727-00021, 09727-00031) to compress the front coil spring LH to remove the lock nut and front suspension support sub-assembly. The technician should begin the procedure by removing the front suspension support LH bearing and continuing with the front coil spring seat upper LH and front coil spring insulator upper LH before taking out the front coil spring LH and front spring bumper LH and front coil spring insulator lower LH. This sequence leads to the shock absorber assembly front LH. To inspect the shock absorber assembly front LH you should compress and extend its rod while checking for abnormal sound or resistance then replace it if you detect any problems. To assemble the shock absorber front LH the technician must begin by installing the lower left front coil spring insulator followed by the front spring bumper LH and reapplication of the Special Service Tool to compress the front coil spring LH before positioning it onto the shock absorber front LH assembly. Shift the front coil spring insulator upper LH in position together with the front coil spring seat upper LH having its mark pointed outward followed by the front suspension support LH bearing and the front suspension support sub-assembly LH positioned with its mark directed outward. Then use a new lock nut securing the system temporarily. Position the front shock absorber with coil spring in its correct place before tightening the upper three nuts to 80 Nm and the lower two bolts and two nuts to 210 Nm while holding the nut to stop rotation. Secure the front flexible hose No.1 with speed sensor front LH by tightening both the lock nut to a torque of 49 Nm. The last steps involve the front stabilizer link assembly (LH with 74 Nm torque), cowl top panel sub-assembly outer front with 9 bolts (7.5 Nm torque) and installing the wiper motor and link assembly and front wiper arms and front wheel (103 Nm torque). Front wheel alignment inspection and adjustment follow. To dispose of the shock absorber assembly front LH extend the shock absorber rod before drilling a hole into the cylinder to let gas escape while observing chip safety and recognizing that this gas has no color or smell yet remains harmless to health.