VALVE GP-CONTROL 3939136 - Caterpillar

Hydraulic Oil Return Filter Pressure Indicator
Illustration 1 g00292952
Hydraulic Oil Return Filter The indicator light will illuminate if the oil pressure at the return filter is more than the normal operating pressure of 586 kPa (85 psi).The indicator light should go out when the oil gets to operating temperature. Stop the engine and change the hydraulic oil return filter if the indicator light remains illuminated. Do not operate the machine until the cause of the warning is corrected. Damage can occur if you operate the machine without correcting any problems.Hydraulic Oil Level and Temperature, Engine Oil Pressure, and Coolant Temperature Warning Indicator
Illustration 2 g00293035
Hydraulic Oil Level and Temperature, Engine Oil Pressure, and Coolant Temperature Warning Indicator The indicator light will illuminate if any of the following items occur:
The hydraulic oil level drops too low. The indicator will light and the horn will sound.
The hydraulic oil temperature is too high. The indicator will illuminate and the horn will sound.
The engine oil pressure is too low. The indicator will illuminate and the horn will sound.
The engine coolant temperature is too high. The indicator will light and the horn will sound.If the indicator light comes on, check the appropriate gauges. If the indicator light comes on, stop the machine and the engine immediately. Investigate the cause of the warning. Correct any problems before operating the machine. If the cause of the problem is not corrected, damage may occur.Charge Indicator Light
Illustration 3 g00293033
Charge Indicator Light The charge indicator will illuminate if the electrical system is not supplying the correct voltage. The charge indicator will illuminate if the battery is not charging.If the charge indicator is illuminated and the engine is running, see your dealer.