C15 and C18 Industrial Engines Caterpillar

Removal Procedure

Note: The coolant temperature sensor is located in the water temperature regulator housing.

1. Drain the coolant from the cooling system to a level below the coolant temperature sensor into a suitable container for storage or disposal.

Show/hide table



Illustration 1	g02105054

2. Disconnect harness assembly (1) and remove coolant temperature sensor (2) .

3. Remove the O-ring seal from the coolant temperature sensor.

Installation Procedure

1. Install the coolant temperature sensor in the reverse order.

   Note: Do not pre-tighten the sensor using the plastic portion of the sensor. Pre-tighten the sensor using the metal hex portion of the sensor. Damage can occur to the sensor if pre-tightened using the plastic portion of the sensor.

   1. Tighten coolant temperature sensor (2) to a torque of 20 ± 3 N·m (177 ± 27 lb in).

2. Fill the cooling system with coolant. Refer to Operation and Maintenance, "Refill Capacities" for the cooling system capacity.