Ventrac 4520P - Removing and Installing the Hydraulic Fluid Reservoir

Testing the Warning Alarm................................................................................................................... 6–42
Neutral Switch............................................................................................................................................. 6–43
Testing the Neutral Switch ....................................................................................................................... 6–44
Hydraulic Fluid Temperature Switches ................................................................................................. 6–45
Testing the Front Motor Hydraulic Fluid Temperature Switch...................................................... 6–45
Testing the Hydraulic Cooler Temperature Switch ......................................................................... 6–46
Hydraulic Cooler Fan ................................................................................................................................ 6–48
Testing the Hydraulic Cooler Fan ....................................................................................................... 6–48
Speed Sensor ............................................................................................................................................. 6–50
Testing the Speed Sensor.................................................................................................................... 6–51
Adjusting the Speed Sensor................................................................................................................ 6–52
RPM Sensor................................................................................................................................................ 6–53
Testing the RPM Sensor....................................................................................................................... 6–53
Adjusting the RPM Sensor................................................................................................................... 6–54
Fuel Pump ................................................................................................................................................... 6–55
Testing the Fuel Pump .............................................................................................................................. 6–56
Fuel Level Sender...................................................................................................................................... 6–57
Testing the Fuel Level Sender ............................................................................................................ 6–57
Oil Pressure Switch ................................................................................................................................... 6–58
Testing the Oil Pressure Switch.............................................................................................................. 6–59
Speed Direction Lift Auxiliary (SDLA) Control Lever (Optional) ..................................................... 6–60
Testing the SDLA Control Lever 12V Switches............................................................................... 6–60
12 Volt Front and Rear Socket and Plug .............................................................................................. 6–61
Battery .......................................................................................................................................................... 6–63
Battery Safety ......................................................................................................................................... 6–64
Cleaning the Battery and Terminals................................................................................................... 6–64
Charging the Battery ............................................................................................................................. 6–65
Storing the Battery ................................................................................................................................. 6–65
Removing the Battery ........................................................................................................................... 6–66
Installing the Battery.............................................................................................................................. 6–66
Electrical System: Service and Repairs Page 6–2 4520P
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