John Deere – 1023E, 1025R and 1026R – Remove and Install Coolant Temperature Sensor

[1] – Park machine safely.

[2] – Allow engine to cool before servicing the cooling system.

[3] –
Cooling system capacity is approximately 3.7 L (3.9 qt.).

Place a suitable container under radiator drain hose. Open radiator drain valve (A) and drain the coolant to lower thancoolant sensor level.

[4] – Disconnect wiring lead (B).

[5] – Remove sensor (C) and copper washer.

[6] – Install sensor in reverse order of removal.

a. Replace copper washer.
b. Tighten sensor to specification.

c. Refill radiator and recovery tank with approved coolant.