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Below is a detailed step-by-step guide for replacing the trailing arm on a Citroën BX, using bullet points to outline each tool and procedure:
### Tools Required:
– **Socket Set**: A comprehensive set including metric sockets (10mm to 22mm) to remove bolts and nuts.
– **Wrench Set**: Adjustable and combination wrenches for different sized bolts.
– **Torque Wrench**: To ensure bolts are tightened to the manufacturer’s specifications.
– **Pry Bar**: Useful for leveraging and separating components.
– **Hammer**: For tapping out stubborn parts or bushings.
– **Jack and Jack Stands**: To lift the car securely before working underneath.
– **Wheel Chocks**: To prevent the vehicle from rolling.
– **Brake Cleaner**: For cleaning components during the replacement process.
– **Grease**: To lubricate new bushings and moving parts.
– **Replacement Trailing Arm**: Ensure it’s the correct part for your specific Citroën BX model.
### Preparation:
– **Park the Vehicle**: Ensure the car is on a flat surface, with the parking brake engaged.
– **Wheel Removal**: Use the lug wrench to loosen and remove the wheel on the side where the trailing arm will be replaced.
– **Secure the Vehicle**: Place wheel chocks behind the rear wheels and jack up the vehicle. Secure it on jack stands.
### Removal of the Old Trailing Arm:
– **Access the Suspension**: Locate the trailing arm, which connects the rear axle to the body of the car.
– **Disconnect the Brake Line**: If the trailing arm has a brake line attachment, carefully disconnect it using a wrench without damaging the line.
– **Remove the Shock Absorber**: Use the socket set to unbolt the shock absorber from the trailing arm.
– **Detach the Trailing Arm**:
– Locate the mounting bolts that attach the trailing arm to the chassis and the axle.
– Use the appropriate socket and wrench to remove these bolts. Keep them in a safe place for reinstallation if they are reusable.
– If there are bushings that appear worn or damaged, you may need to remove them as well. This may require the use of a pry bar and hammer.
– **Remove the Trailing Arm**: Once everything is disconnected, carefully slide the trailing arm out from its position. Be cautious of any remaining connections.
### Installation of the New Trailing Arm:
– **Prepare the New Part**: Inspect the new trailing arm for any defects and ensure it matches the old one.
– **Install New Bushings**: If your new trailing arm does not come with bushings, press in new ones as needed. Lubricate them with grease for easy installation.
– **Position the New Trailing Arm**: Slide the new trailing arm into place, aligning it with the mounting points on the chassis and axle.
– **Secure the Trailing Arm**:
– Reinstall the bolts that secure the trailing arm to the chassis and axle.
– Use the torque wrench to tighten these bolts to the specified torque settings found in the vehicle’s service manual.
– **Reattach the Shock Absorber**: Bolt the shock absorber back to the trailing arm, ensuring it is properly secured.
### Final Steps:
– **Reconnect the Brake Line**: If applicable, reconnect the brake line and ensure it is secured
and free of leaks.
– **Double-Check Connections**: Go through all connections to ensure that everything is tightened and secure.
– **Reinstall the Wheel**: Place the wheel back onto the hub and hand-tighten the lug nuts. Lower the vehicle off the jack stands and then tighten the lug nuts to the specified torque setting.
– **Test Drive**: After ensuring everything is secure, take the vehicle for a short test drive to check for any unusual noises or handling issues.
### Safety Note:
– Always wear safety goggles and gloves when working on vehicles to protect against debris and sharp objects.
– If you are unsure about any part of the process or lack the necessary tools, consult a professional mechanic.
This guide should provide you with a comprehensive overview of the trailing arm replacement process on a Citroën BX. Always refer to the specific vehicle service manual for any particular details or torque specifications.
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