Cooling System - Flush - Dodge D250 1990 Service Manual

Maintenance Guidelines
PageOC-12
Lubrication and Maintenance
DODGE Turbo Diesel
f ^ O Check for damaged hoses and loose or damaged hose
SIS clamps. Replace as required. Check the radiator for leaks,
damage or dirt build-up. Clean and repair as required.
Cooling System - Flush
To clean the cooling system, back flush the radiator and engine
^fv] with clean water.
Remove both radiator hoses from the engine. Attach the water
supply to the lower radiator connection and back flush the
radiator. If the radiator shows mineral build-up, scale, rust or
oil, use a heavy duty radiator cleaner and follow the
manufacturer's directions.
Remove the top heater hose. Attach the water supply to the
heater line and back flush the engine.
If the engine shows mineral build-up, scale, rust or oil, use a
heavy duty radiator cleaner and follow the manufacturer's
directions.
Re-fill the cooling system with a mixture of 50% water and 50%
ethylene-glycol type antifreeze. Refer to the Coolant
Specifications in Section OE.