TUBE-FUEL 3611972 - Caterpillar

Temperature Switch (High Hydraulic Oil)
Illustration 6 g00540904
Temperature Switch (High Hydraulic Oil)When the hydraulic oil temperature is too high, the high hydraulic oil temperature switch, which is located on the right side of the hydraulic tank, closes. The temperature relay is energized when the high hydraulic oil temperature switch closes. This causes contact "19" of the controller to be connected to ground. The output of the hydraulic pump is limited to power mode I when the temperature relay contact of the controller is closed to ground. The hydraulic oil temperature switch closes at temperatures above 94° 3°C (201° 5°F). The switch opens again when the temperature drops below 89° 3°C (192° 5°F). The high hydraulic oil temperature switch is part of the hydraulic oil temperature sender. These components are in the same part. Temperature Switch (Engine Coolant)
Illustration 7 g00540907
Temperature Switch (Engine Coolant)When the engine coolant temperature is too high, the engine coolant temperature switch closes. When the engine coolant temperature switch closes the temperature relay is energized. The temperature relay closes contact "19" of the controller to ground. The output of the hydraulic pump is limited to power mode I when the temperature relay contact of the controller is closed to ground. The engine coolant temperature switch, which is located on the right front side of the engine, closes at temperatures above 100° 3°C (212° 5°F) and the engine coolant temperature switch opens at temperatures below 95° 3°C (203° 5°F). The engine coolant temperature switch turns on the indicator for high engine temperature. This switch also sounds an alarm. Pressure Switch (Forward Travel)
Illustration 8 g00540909
Pressure Switch (Forward Travel)The travel pressure switch, which is located under the travel pedal, detects forward movement of the machine. The travel pressure switch closes when pilot pressure builds up in the pilot line for forward travel. This causes the travel alarm relay to become energized when the machine is in forward travel operation. This relay activates the travel alarm. The travel pressure switch closes at 517 34.5 kPa (75 5 psi) and opens at 414 34.5 kPa (60 5 psi). Pressure Switch (Reverse Travel)
Illustration 9 g00540909
Pressure Switch (Reverse Travel)The travel pressure switch, which is located under the travel pedal, detects reverse movement of the machine. The travel pressure switch closes when the pilot pressure builds up in the pilot line for reverse travel. This causes the travel alarm relay to become energized. This relay activates the travel alarm. The travel pressure switch closes at 517 34.5 kPa (75 5 psi)and opens at 414 34.5 kPa (60 5 psi). Temperature Sender (Hydraulic Oil)
Illustration 10 g00540904
Temperature Sender (Hydraulic Oil Sender)The hydraulic oil temperature sender is located in the side of the hydraulic tank. As the hydraulic oil temperature changes, the resistance of the sender changes. As the resistance of the sender changes the hydraulic oil temperature display in the monitor panel changes. The hydraulic oil temperature sender is part of the high hydraulic oil temperature