Flush Cooling System and Replace Thermostats-Every Two Years
1. Slowly turn the radiator cap to the first stop to relieve pressure. |
CAUTION:
To avoid serious injury to you or others, DO NOT remove radiator cap when engine is hot. Stop engine and wait until engine has cooled.
NXH8,64036,I40 -19-15APR98-1/2 |
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2. Place hose over end of radiator drain fitting (A). 3. Open radiator drain fitting and drain coolant. IMPORTANT: Thermostats must be removed to ensure a thorough flush. Cab heater must be in the ON position during the entire flushing procedure. 4. Close radiator drain fitting and fill system with a commercial cooling system cleaning solution . Run engine up to operating temperature. Stop engine and drain system. IMPORTANT: Never pour cold water or coolant into hot engine. Use warm water or wait until engine has cooled. 5. Fill system with clean water . Run engine up to operating temperature. Stop engine and drain system. 6. Remove thermostat cover and clean sealing area. Apply sealant to new gasket and install new thermostats and gasket. Tighten cap screws to specification. Specification
7. Fill system with specified coolant. See Diesel Engine Coolant in this section for coolant specifications. Install and tighten radiator cap. Run engine to circulate and mix coolant. Coolant level should be up to mark on expansion tank. NOTE: Adding conditioner is not necessary if refilling with John Deere Antifreeze/Summer Coolant. 8. Add John Deere liquid coolant conditioner. 9. Clean radiator and cooler condenser. Straighten any bent fins. NOTE: If John Deere Antifreeze/Summer Coolant is used, service interval can be increase to every five years or 5000 hours. |
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NXH8,64036,I40 -19-15APR98-2/2 |