Upper and lower radiator hoses and all heater hoses should be checked for deterioration, leaks and loose hose clamps every 15,000 miles. To remove the hoses:
- Drain the radiator.
- Loosen the hose clamps at each end of the hose to be removed.
- Working the hose back and forth, slide it off its connection and then install a new hose if necessary.
- Position the hose clamps at least 6mm ( 1 / 4 in.) from the end of the hose and tighten them.