JLG 510AJ Operator Manual - Manual (Page 39)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3121179 – JLG Lift – 3-5
9. Tower Lift
Provides for raising and lowering of the Lower and Mid
Booms.
10. Main Boom Lift
Provides for raising and lowering of the Main Boom.
11. Telescope
Provides for extension and retraction of the Main Boom.
Ground Control Indicator Panel
1. Battery Charging Indicator
Indicates a problem in the battery or charging circuit,
and service is required.
2. Engine Oil Pressure Indicator
Indicates that engine oil pressure is below normal and
service is required.
3. Engine Coolant Temperature Indicator (Liquid Cooled
Engines)
Indicates that engine coolant temperature is abnormally
high and service is required.
4. Engine Oil Temperature Indicator (Deutz)
Indicates that the temperature of the engine oil, which
also serves as engine coolant, is abnormally high and
service is required.