Note. See also Section Checking the condition and replacing the engine compartment hoses, localizing leaks.
1. Identified during the inspection of the condition of the components of the cooling system (see chapter cooling system) damaged hoses must be replaced without fail.
2. Drain the liquid from the cooling system (see chapter Checking the cooling system and frost resistance of the coolant, changing the fluid).
3. Loosen and move aside the mounting collars. Carefully remove the hose from the inlets. If the hose does not lend itself to removal, try to rotate it, being careful not to damage the pipe, the failure of which is fraught with significant costs, remember that the radiator pipes are among the rather fragile components! If the hose does not give in, it must be cut - the cost of a new hose is not comparable to the cost of purchasing a replacement radiator. Before cutting the hose, prepare a replacement element of the correct size.
4. When installing a new hose, first put the clamps on it, then install the hose on the nozzles. If tie-type clamps were originally installed, replace them with screw ones. For easier installation of rigid hoses, moisten the inside surfaces of their ends with soapy water or heat them in hot water (do not immerse the hose in boiling water - it may delaminate).
5. After installing the hose on the branch pipes, check the correctness of its laying in the engine compartment. Install the clamps on the ends of the hose, passing them behind the flare pipes, and tighten them.
6. Fill the cooling system (see chapter Checking the cooling system and frost resistance of the coolant, changing the fluid).
7. Start the engine and check for coolant leaks from the serviced unit.