See Figures 1, 2, 3, 4 and 5
Worn hoses may feel spongy, brittle and discolored. The lower hose may be permanently narrowed at one point from suction, or may appear frayed or cracked. In contrast, new hoses will be springy and pliable yet firm. The rubber surface will be solid and smooth, and there will be no evidence of string reinforcements showing through.
- Put a bucket with at least a 2 gallon capacity under the radiator draincock, if equipped, or under the radiator end of the lower hose.
- Open the draincock, or loosen the hose clamp and carefully slide the bottom hose off the radiator, and allow the coolant to flow out.
- If a heater hose is being removed/replaced, turn the rotary heater control to WARM and allow any coolant contained in the heater core and hoses to drain out.
- Loosen the clamps at both ends of the hose(s). Work the hose ends off the radiator or heater core and engine block connections.
- Install the new hose in reverse order. If the hose has certain bends molded into it, make sure to position such that crimping is prevented. Install new hose clamps onto the hose from both ends before sliding hose ends onto the fittings. Make sure hoses slide all the way onto the connectors.
- Tighten the clamps securely, then refill the cooling system as described later in this section.