GM 84049733 Front Suspension Strut Assembly

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If the front suspension shock absorber/coil springs show signs of wear such as leaking fluid, loss of damping capability, sagging or cracked coil springs, they should be disassembled and overhauled as needed. The shock absorbers themselves cannot be serviced and should be replaced if faulty, while the springs and related components can be replaced individually. It is important to replace components on both sides of the vehicle at the same time to maintain balanced characteristics. When removing the assembly from the vehicle, it is important to clean away external dirt without damaging the protective coating on the spring. The coil spring compressor tools should be installed and fully engaged to compress the spring and relieve tension from the upper mount. The strut piston rod should be held with a wrench while unscrewing the nut, avoiding the use of an impact wrench to prevent damage. The upper mount, spring, boot, bump stop, and lower spring seat should be removed in that order. If a new spring is being installed, the original spring must be carefully released from the compressor, while a re-used spring can be left in compression. After disassembling the strut assembly, all components should be examined for wear and damage, replacing them as necessary. The shock should be checked for fluid leakage, pitting along the piston rod, and damage to the shock body. Testing the operation of the shock should be done by moving the piston through a full stroke and short strokes, ensuring smooth and continuous resistance. If there are any issues or visible signs of wear or damage, replacement is required. To reassemble, the strut rod and bumpers should be lightly lubricated with silicone oil or white lithium grease. The lower spring seat, bump stop, dust boot, spring, and upper mount seat should be installed in that order. The piston rod nut should be tightened to the specified torque with the spring compressed. Finally, the tension on the spring should be released, and the strut assembly can be re-installed in the vehicle.

Check the shock body for leaking fluid, dents, cracks, and other damage. Check the coil spring for chips or cracks in the spring coating and inspect the spring seat for cuts, hardness, and deterioration.

Install the wheel and lug nuts, lower the vehicle, and tighten the lug nuts to the specified torque.

The steering linkage and suspension components.