Note. See also Section Checking the condition and replacing the engine compartment hoses, localizing leaks in Chapter Current service
1. If, as a result of an inspection carried out in accordance with the recommendations given in Chapter Current service You have found damage on any hose, it must be replaced.
2. Drain the liquid from the cooling system (see Section Checking the functioning of the cooling system and frost resistance of the coolant, changing the fluid in Chapter Current service). If you are not going to add new fluid to the system, save the drained fluid for later use.
3. Use pliers to squeeze the antennae of regular clamps (or use a screwdriver to loosen the screws of the screw-type clamps - if installed). Move the clamps aside. Carefully remove the hose from the fittings. New hoses are much easier to remove than old ones.
4. If the hose cannot be removed from the nozzle, try turning it. Be careful not to damage the fittings when trying to remove the hose. Failure can lead to costly repairs. Keep in mind that the radiator pipes are quite fragile, so do not use much force when removing the hoses from them. If the hose still does not come off, cut it off, then cut the piece left on the nozzle lengthwise and remove it. The cost of a new hose is not comparable to the cost of a new radiator. Before cutting the hose, make sure you can buy a new one.
5. 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).
6. 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.
7. Fill the cooling system (contact the head Current service).
8. Start the engine and check for coolant leaks from the serviced unit.