Replacing the shock absorbers on an Alfa Romeo 155 involves several steps and requires specific tools. click here for more details on the download manual…..
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Below is a detailed guide that outlines the process, along with descriptions of the necessary tools.
### Tools Needed:
– **Jack and Jack Stands:**
– A hydraulic jack is used to lift the vehicle off the ground. Jack stands are essential for safely supporting the vehicle while you work underneath it.
– **Wheel Chocks:**
– These are used to prevent the vehicle from rolling while it is lifted. place them behind the rear wheels if you’re working on the front shocks, or vice versa.
– **Lug Wrench:**
– A tool specifically designed to loosen and tighten lug nuts. It typically has a cross shape or a long handle for leverage.
– **Socket Set:**
– A set containing various sizes of sockets and a ratchet handle. You’ll need this to remove the bolts securing the shocks to the vehicle.
– **Wrench Set:**
– A set of open-end and box-end wrenches for accessing hard-to-reach bolts and nuts.
– **Spring Compressor:**
– A specialized tool for compressing coil springs safely, essential if you’re replacing struts, as it prevents injury when handling the springs.
– **Pry Bar:**
– A long lever that can assist in loosening stubborn components or separating parts that may be stuck together.
– **Torque Wrench:**
– A precision tool used to apply a specific amount of torque to fasteners, ensuring they are tightened to the manufacturer’s specifications.
– **Penetrating Oil:**
– A lubricant that can help loosen rusted or corroded bolts. Apply it and let it sit for several minutes before attempting to remove the bolts.
– **Safety Glasses and Gloves:**
– Personal protective equipment to keep your eyes and hands safe while working on the vehicle.
### Procedure for Shock Absorber Replacement:
– **Preparation:**
– Park the car on a flat surface and engage the parking brake. Ensure the engine is off and cool.
– **Loosen Lug Nuts:**
– Use the lug wrench to slightly loosen the lug nuts on the wheels where you will be replacing the shocks (front or rear) while the vehicle is still on the ground.
– **Lift the Vehicle:**
– Use the hydraulic jack to lift the vehicle at the appropriate lifting points. Once elevated, place jack stands under the vehicle to secure it.
– **Remove the Wheel:**
– Completely remove the lug nuts and take off the wheel to access the shock absorber.
– **Identify the Shock Absorber:**
– Locate the shock absorber, which is typically mounted vertically in the wheel well. It will have a top mount and a bottom mount.
– **Remove the Bottom Bolt:**
– Use the socket set to remove the bolt securing the bottom of the shock absorber to the suspension arm or axle. If it’s stuck, apply penetrating oil and allow it to soak.
– **Remove the Top Mount:**
– Access the top of the shock absorber, which may require removing the rear seat or accessing the engine bay. Use the appropriate socket or wrench to detach the top mount.
– **Remove the Shock Absorber:**
– Once both the top and bottom bolts are removed, carefully pull the shock absorber out of its mount. If it’s a strut assembly, you may need to compress the spring with a spring compressor first.
– **Prepare New Shock Absorber:**
– Compare the new shock absorber with the old One to ensure they are identical. If replacing struts, assemble the new strut using the spring compressor to secure the spring.
– **Install New Shock Absorber:**
– Position the new shock absorber in place. start by attaching the top mount first, followed by securing the bottom with the bolt.
– **Tighten Fasteners:**
– Use the torque wrench to tighten the bolts to the manufacturer’s specifications, ensuring everything is secure.
– **Reattach the Wheel:**
– place the wheel back on
and hand-tighten the lug nuts. Lower the vehicle slightly to allow the wheel to rest on the ground for torqueing.
– **Lower the Vehicle:**
– Remove the jack stands and lower the vehicle completely with the hydraulic jack.
– **Final Tightening:**
– Once the vehicle is on the ground, use the lug wrench to fully tighten the lug nuts in a criss-cross pattern for even distribution.
– **Repeat:**
– If replacing all four shock absorbers, Repeat the process for the other side.
– **Test Drive:**
– Once all shocks are replaced, take the vehicle for a test drive to ensure proper functionality and to check for any unusual noises or handling issues.
### Important Tips:
– Always refer to the vehicle’s service manual for specific torque settings and procedures related to your model.
– If you’re not comfortable performing this task, consider seeking help from a professional mechanic.
– Regularly inspect your shock absorbers as part of your vehicle’s maintenance routine to ensure safety and performance.
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