JLG 800A Operation And Safety Manual page 53

SECTION 3 - MACHINE CONTROLS AND INDICATORS
8. Boom Malfunction Indicator
If the Boom Malfunction Indicator illuminates when
attempting to activate a tower boom function, the function
is being cutout by tower boom limit switch. The function is
not permitted at the current boom configuration.
If the Boom Malfunction Indicator is flashing or on steady
without a boom function attempt, the upright is out of
alignment or the monitoring system is in need of calibration.
DISCONTINUE OPERATION IF THE BOOM MALFUNCTION LIGHT IS FLASHING OR ON
STEADY.
IF THE UPRIGHT IS OUT OF ALIGNMENT WITH THE PLATFORM RAISED, LOWER THE
MAIN BOOM AND TELESCOPE OUT UNTIL THE PLATFORM REACHES THE GROUND. THE
TOWER BOOM DOWN FUNCTION IS CUT OUT IN THIS CONDITION. REPORT THE PROB-
LEM TO THE PROPER SERVICE PERSONNEL. DO NOT OPERATE THE MACHINE UNTIL
THE MALFUNCTION IS CORRECTED.
3-8
9. Platform Overload (If equipped)
Indicates the platform has been overloaded.
10. Hydraulic Oil Filter Indicator (Prior to S/N 0300085331)
A gauge indicates that the return oil filter is too restrictive
and needs to be replaced.
11. Transmission Pump Oil Filter Indicator (Prior to
S/N 0300085331)
Indicates that the charge pump filter is too restrictive and
needs to be replaced.
12. Engine Air Filter Indicator (Prior to S/N 0300085331)
When illuminated indicates that the air filter is too restrictive
and needs to be replaced.
– JLG Lift – 3121209