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Rear Shock Replacement
 
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Pelican Technical Article:

Rear Shock Replacement

Jared Fenton

Time:

3 hours3 hrs

Tab:

$300

Talent:

***

Tools:

15mm,18mm socket and wrench, torque wrench

Applicable Models:

Volvo C30 T5 (2008-13)
Volvo C30 T5 R-Design (2008-13)

Parts Required:

Rear shocks

Hot Tip:

Safety first. Make sure the car is firmly supported on jack stands.

Performance Gain:

Better handling

Complementary Modification:

Replace rear sway bar bushings

Replacing the rear shocks on your Volvo C30 is a pretty easy job for the do it yourselfer. In this article, I'll go over the steps involved with replacing the rear shocks along with the rear shock mounts and bump stops. This job can be performed without removing the rear springs. Unless you are replacing them with performance springs, I'd leave them alone as they require a specialized spring compressor to remove from the chassis.

Begin the job by jacking both rear wheels up and off the ground. See our article on Jacking up Your C30 for more information. Always wear safety glasses whenever you work under your car.

Left and Right Sides of Car: Begin by removing the rear wheel from the car and locating the 18mm bolt holding the bottom of the shock to the control arm (green arrow).
Figure 1

Left and Right Sides of Car: Begin by removing the rear wheel from the car and locating the 18mm bolt holding the bottom of the shock to the control arm (green arrow). You may need a breaker bar to loosen and remove this bolt. Don't worry about the control arm falling down in your lap as the sway bars will support the load. When re-installing the bolt on the new shock, torque it to 115Nm (84 ft/lbs.).

Left and Right Sides of Car: Now loosen and remove the two 15mm bolts (green arrows) holding the upper shock mount to the chassis.
Figure 2

Left and Right Sides of Car: Now loosen and remove the two 15mm bolts (green arrows) holding the upper shock mount to the chassis.

Left and Right Sides of Car: Carefully lower the shock absorber down and out from inside the wheel well.
Figure 3

Left and Right Sides of Car: Carefully lower the shock absorber down and out from inside the wheel well.

Left and Right Sides of Car: The shock mount is held on to the shock rod with a 15mm nut (green arrow).
Figure 4

Left and Right Sides of Car: The shock mount is held on to the shock rod with a 15mm nut (green arrow). You'll need to hold the shock rod to loosen and remove the nut.

Left and Right Sides of Car: I found that an offset 15mm wrench along with a pair of vise-grips works well to remove the nut.
Figure 5

Left and Right Sides of Car: I found that an offset 15mm wrench along with a pair of vise-grips works well to remove the nut. When installing the new shock, use the supplied nut and tighten it down until it stops.

Left and Right Sides of Car: Once the nut is removed, slide the shock mount/bump stop/dust boot assembly off the shock rod.
Figure 6

Left and Right Sides of Car: Once the nut is removed, slide the shock mount/bump stop/dust boot assembly off the shock rod. The new shock will look like thePicture shown here. You'll need to transfer the old mounting parts to the new shock.

Left and Right Sides of Car: Pull the dust boot (green arrow) off the end of the bump stop (yellow arrow).
Figure 7

Left and Right Sides of Car: Pull the dust boot (green arrow) off the end of the bump stop (yellow arrow). You'll want to inspect the bump stop for damage or cracking. Replace it if needed.

Left and Right Sides of Car: Pull the bump stop out of the shock mount and inspect for damage.
Figure 8

Left and Right Sides of Car: Pull the bump stop out of the shock mount and inspect for damage. Replace it if needed.

Left and Right Sides of Car: Inspect the rubber portion of the shock mount (green arrow) for cracks or separation.
Figure 9

Left and Right Sides of Car: Inspect the rubber portion of the shock mount (green arrow) for cracks or separation. Typically, you'll want to replace these every time you replace the shocks. However they can be reused if in good shape. Installing the new shock is the reverse of removal.

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