Adding Coolant

TS281-UN-15APR13

High-Pressure Fluids

RG13295-UN-20NOV03

Radiator and Coolant

A - Radiator Filler Neck

B - Radiator

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

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

IMPORTANT: Never pour cold liquid into a hot engine, as it may crack cylinder head or block. DO NOT operate engine without coolant for even a few minutes.

John Deere Cooling System Sealer may be added to the radiator to stop leaks. DO NOT use any other stop-leak additives in the cooling system.

Air must be expelled from cooling system when coolant is added. Cooling system must be free of air by the time the engine coolant temperature reaches 80°C (176°F) or damage to EGR cooler may result.

Coolant level should be maintained to the bottom of the surge tank filler neck or radiator filler neck (A). If needed, as coolant as follows.

1. Loosen temperature sending unit fitting at rear of cylinder head to allow air to escape when filling system.

2. IMPORTANT: When adding coolant to the system, use the appropriate coolant solution. (See ENGINE COOLANT SPECIFICATIONS in Fuels, Lubricants, and Coolant Section for mixing of coolant ingredients before adding to cooling system.)

   Do not overfill cooling system. A pressurized system needs space for heat expansion without overflowing at top of radiator.

   Add coolant until level is at bottom of surge tank filler neck or radiator filler neck (A). If equipped with a translucent surge tank, coolant level should be at cool fill line indicator on surge tank.

3. Tighten plugs and fittings when air has been expelled from system.

4. Run engine until it reaches operating temperature.