In accidents, the side members of the car are often damaged and change their geometry. Simple models of side members can be straightened by pulling. The complex structures used on modern foreign cars, which represent an energy-absorbing cassette, are only replaced completely. The pulling technology has been worked out to the smallest detail.
It is necessary
- - stand with a guiding template and grippers;
- - gas burner or industrial hair dryer;
- - disc-type sander;
- - straightening hammer and mandrel;
- - body repair table;
- - sealing tape;
- - primer coating;
- - welding machine;
- - grinder;
- - putty knife.
Instructions
Step 1
Remove all parts from the body to allow easy access to the side member, including the body panels and the corresponding wheel arch. When repairing the front side members, there may be particularly flammable parts on the passenger side panel of the engine compartment, so use caution. Be sure to remove all wiring and electrical parts around the repair area.
Step 2
Perform preliminary stretching and straightening of the damaged side member to a shape close to the original one. To do this, use special grips to secure the car on the stand. Fasten the grips only in the places of horizontal seams of factory resistance welding. After preliminary pulling, cut off, if necessary, those parts of the side member to be replaced. Replacing damaged parts of the side member without first pulling it out will complicate its subsequent repair. Do not extend the side member more than necessary! After completing the pre-pull, check the condition of the doors and hinges.
Step 3
Remove the primer and sealing tape at the welds. To do this, preheat the primer and the sealing tape with a gas burner or hot air gun. After heating, peel off the coating and tape easily with a steel trowel. When working with a gas burner and industrial hair dryer, try not to burn the upholstery of the passenger compartment.
Step 4
Check the spar geometry against the check points and the repair chart. For ease of operation, place control points on the side member and other parts. After that, pull it clean, trying to ensure that the control points of the spar coincide with the points on the stand, and the dimensions coincide with the body repair table. Level out any unevenness on the side member and grind it with a disc grinder. Check the parallelism of the side members and wheel arches. When working with grinders and grinders, use safety glasses to prevent eye injuries.
Step 5
Straighten out adjacent damaged parts and wheel arch with a straightening hammer and mandrel. Also align the welding edges of the damaged parts. When welding, observe safety precautions and use a helmet, tarpaulin gloves and safety shoes. Align the edges of the wheel arches and side members with a straightening hammer and mandrel to ensure they fit snugly together.
Step 6
Apply new sealing tape to the joints of the passenger compartment panels. Apply a new coat of primer to the panel joints, the underside of the side member and the inner surfaces of the wheel arches. Then paint the body. Ensure adequate forced ventilation in the repair area before handling primers and paints, check the labels on the formulations used. Avoid skin contact with these substances and do not smoke while working.
Step 7
Apply an anti-corrosion coating after painting. Install all removed parts. Replace damaged ones with new ones. Apply grease to moving parts. Fill with coolant. Charge the air conditioner with refrigerant. Check the clearances between the body panels, check the operation of the bonnet lock.
