Note: Hoses should only be disconnected after the engine has cooled down to avoid burns from hot steam and splashes.
1. Perform the inspection described in Chapter Maintenance, and identify the damaged hose.
2. Drain the cooling system. If the coolant cannot be replaced, collect it in a clean container.
3. Loosen the hose clamps. Three types of clamps are used on the models described: worm, spring and tension. The tension clamps are disposable and should be replaced with standard worm-type clamps after removal. Move the clamps along the hose away from the connection points.
4. Carefully remove the hose. New hoses are relatively easy to remove, but on an older car they may have become stuck to the pipes.
5. If you can't remove the hose, try to release it by twisting the end on the nozzle. Gently squeeze the end of the hose with a blunt instrument (for example, with a flat screwdriver), being careful not to damage the pipes or hoses. Remember that the radiator inlet pipe is fragile; do not use excessive force when trying to remove the hose. As a last resort, cut the hose, then cut the stuck end lengthwise into two pieces. Although the hoses are quite expensive, they are still cheaper than a new radiator.
6. When installing the hose, first put the clamps on it, then place the hose in the working position.
7. Make sure the hose is routed correctly, then move the clamps to the ends of the hose and tighten them.
8. Fill the cooling system.
9. Check the system thoroughly for leaks.