Disassembly and Assembly
OVERVIEWThe Strut assembly must be removed from the vehicle for it to be disassembled and assembled.
For the disassembly and assembly of the strut assembly, use strut spring compressor, Pentastar Service Equipment (PSE) tool W-7200, or the equivalent, to compress the coil spring. Follow the manufacturer's instructions closely.
The rear strut is available with 3 calibrations; be sure strut is replaced with an assembly of the same calibration.
DISASSEMBLY
1. If both struts are being serviced at the same time, mark the coil spring and strut assembly according to which side of the vehicle the strut was removed from, and which strut the coil spring was removed from.
WARNING: Do not install the spring compressor hooks on the coil spring in an area of the spring covered by a sleeve. If the sleeve moves when compressing the spring, the spring could come move resulting in personal injury.
CAUTION: When installing the spring compressor's hooks on the coil spring, do not position the hooks of the spring compressor on the sleeve of the coil spring. Positioning the spring compressor on the sleeve could cause the sleeve to dislodge from the coil spring when it is compressed. This would result in the required replacement of the coil spring.
2. Position the strut assembly in the strut coil spring compressor following the manufacturers instructions. Position the strut assembly so the outboard side of the strut is outward away from the compressor. Grasp the upper and lower coils of the spring with the upper and lower hooks of the compressor. Place a clamp on the lower end of the coil spring, so the strut is held in place once the strut shaft nut is removed. Compress the coil spring until all load is removed from the upper strut mount.
3. Install Strut Shaft Socket, Special Tool 6864, on the strut shaft nut. Use a deep well socket inserted into the opening of tool 6864 to keep strut shaft from turning. With the spring compressed, remove the nut from the strut shaft.
4. Remove the strut upper mount assembly, upper spring isolator, dust shield, and jounce bumper. The jounce bumper should come off with the dust shield. The dust shield and upper spring isolator can be removed from the upper mount if necessary.
5. Remove the clamp and remove the strut out from the bottom of the coil spring.
6. Remove the lower spring isolator from the strut coil spring seat.
7. Inspect the strut assembly components for the following and replace as necessary:
- Inspect the strut for any condition of shaft binding over the full stroke of the shaft.
- Inspect the strut shaft for loss of charge.
- Inspect the jounce bumper for cracks and signs of deterioration.
- Check the upper mount for cracks and distortion and its retaining studs for any sign of damage.
- Inspect the dust shield for rips and deterioration.
- Inspect the upper and lower spring isolators for material deterioration.
- Inspect the coil spring for any sign of damage to the coating.
NOTE: Before releasing the tension on the coil spring, note the position of the coil end on the upper end of the coil spring. When reinstalled, position it in the same spot for ease of alignment of the upper mount, coil spring and the strut.
8. If the coil spring needs to be removed from the compressor, release the tension from the coil spring by backing off the compressor drive fully. Push back the compressor hooks and remove the coil spring.
ASSEMBLY
NOTE: Make sure all components are free of dirt and debris before assembly, especially around the mounting surfaces. If the coil spring has been removed from the spring compressor, proceed with the next step, otherwise, proceed with step 2.
WARNING: Do not install the spring compressor hooks on the coil spring in an area of the spring covered by a sleeve. If the sleeve moves when compressing the spring, the spring could come move resulting in personal injury.
CAUTION: When installing the spring compressor's hooks on the coil spring, do not position the hooks of the spring compressor on the sleeve of the coil spring. Positioning the spring compressor on the sleeve could cause the sleeve to dislodge from the coil spring when it is compressed. This would result in the required replacement of the coil spring.
1. Place the coil spring in the compressor following the manufacturer's instructions. The coil spring must be installed so the sleeve on the spring is towards the upper end of assembly. Before compressing the spring, rotate the spring to the position noted in disassembly for ease of strut assembly components.
2. Install the lower spring isolator on strut matching the step in the isolator to the step in the strut lower spring seat.
3. Install the strut through the bottom of the coil spring until the lower spring seat contacts the lower end of the coil spring. Align the lower coil spring end with the step in the strut lower spring seat. Install the clamp on the lower end of the coil spring and strut, so the strut is held in place.
4. Install the jounce bumper into the dust shield from the bottom. The jounce bumper should snap into position at the top end of the dust shield.
5. Install the dust shield and jounce bumper into position in bottom of upper strut mount. Dust shield should snap into position. Once correctly installed, the dust boot should be able to be rotated within the mount without coming loose.
6. Install the upper strut mount, dust shield and jounce bumper onto the strut shaft. Position the mount so its center rear mounting stud is aligned with the stabilizer bar attaching link bracket that is on the inboard side of the strut.
7. Install the upper strut mount to strut shaft nut on the strut shaft. Install Strut Shaft Socket, Special Tool 6864, on strut shaft nut. Use a deep well socket inserted into the opening of tool 6864 to keep strut shaft from turning. Tighten the strut shaft nut to a torque of 76 Nm (55 ft. lbs.).
8. Slowly release the tension from the coil spring by backing off the compressor drive fully. As the tension is relieved, make sure the upper mount, spring, and strut align properly.
9. Remove the clamp from the lower end of the coil spring and strut. Push back the spring compressor upper and lower hooks, then remove the strut assembly from the spring compressor.
10. Install the strut assembly back into the vehicle.