Ranger 2WD V6-245 4.0L VIN X SFI (1997)
Radiator Hose: Service and Repair
Collapsing radiator hoses (especially upper radiator hose) may be an indication of a malfunctioning vacuum relief valve in the radiator cap. Inspect and
clean radiator cap. Also make sure that overflow hose is open between radiator coolant recovery reservoir and radiator.
REMOVAL
Replace the cooling system hoses whenever they become cracked, swelled, deteriorated, or have a tendency to collapse.
Partially drain the cooling system to replace the cooling system upper radiator hose. Drain the cooling system completely to replace the lower radiator
hose.
NOTE: In some cases, constant tension spring clamps are used to attach the upper radiator hose and lower radiator hose to the radiator.
1. Drain or partially drain the cooling system by removing the radiator cap and attaching a 9.5 mm (3/8 inch) inside diameter hose to the draincock
nipple, located at the lower rear corner of the radiator. Then open the radiator draincock and allow the coolant to flow through the hose into a
suitable container.
2. Expand the clamps on each end of the hose(s) to be removed. Slide the hose(s) off the connections.
INSTALLATION
WARNING: DO NOT STAND IN LINE WITH OR NEAR THE ENGINE COOLING FAN BLADE WHEN THE ENGINE IS RUNNING.
1. Position the clamps on each end of the new hose. Slide the hose onto the connectors.
2. Slide the clamps toward the ends of the hose until each clamp is completely beyond the beads and is fully seated.
3. Fill the cooling system with a 50/50 mixture of ethylene glycol and water and bleed the system.
4. Operate the engine for several minutes then check the hose(s) and connections for leaks.
