Cooling System—Draining
CAUTION:
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S660 and S670 (Tier 2/Stage II)
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S680 and S690 (Tier 2/Stage II)
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S660, S670, S680 and S690 (Interim Tier 4/Stage III B)
A - Drain Valve
Avoid being scalded when opening surge tank cap. Open cap 1.5 turns to relieve pressure. Never open cap when engine is hot. Allow system to cool before draining.NOTE: Radiator drain is located on front side of radiator.
Cooling system must be drained and replaced every six years or 2000 hours.
Open drain valve (A) located on radiator.
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Front Side of Engine (S660 and S670 Tier 2/Stage II)
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Above Crankshaft (S680 and S690 Tier 2/Stage II)
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Front Side of Engine (S660 and S670 Interim Tier 4/Stage III B)
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Rear Side of Engine (S680 and S690 Interim Tier 4/Stage III B)
A - Drain Valve
Open drain valve (A) located on engine block.
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A - Surge Tank Cap
Open surge tank cap (A) to allow coolant to drain faster.Close radiator drains and fill system with clean water.
Install surge tank cap and run engine until it reaches operating temperature with heater ON.
Shut OFF engine, carefully remove surge tank cap and drain water out before rust or sediment settles.
Close radiator drains and refill system with a solution of clean water and John Deere Cooling System Cleaner PT500 or equivalent. Follow instructions with cleaner.
After using cleaner, flush system with clean water and drain.
Close radiator drains and fill system (refer to Cooling System—Filling in this section for filling procedure and Fuels and Lubricants section for coolant specifications).
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