Testing Coolant

CAUTION: Explosive release of fluids from pressurized cooling system can cause serious burns.

Shut off engine. Only remove cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve pressure before removing completely.

1. Raise hood.

2. Slowly turn de-aeration tank cap (A) to relieve pressure. Remove cap.

NOTE: De-aeration tank will not be full of coolant when cap is removed. When inspecting tank, if it is at least half full, do not add additional coolant.

3. Test coolant using TY16175 coolant test strips available from your John Deere dealer.

NOTE: Follow instructions on back of reader card in test strip pack when testing coolant.

4. Add 30 mL per liter (1.0 fl oz per quart) of John Deere Coolant Conditioner if needed. If tank is too full, drain a small amount of coolant from system before conditioner is added.

NOTE: Cap gasket should be visually checked for sealing effectiveness. A good functioning gasket should have the imprint of the mating surface with no apparent scratches or leak paths.

5. Install de-aeration tank cap and lower hood.

A-De-aeration Tank Cap

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