JLG 800A_AJ Operator Manual - Manual (Page 48)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-8 – JLG Lift – 3121209
8. Boom Malfunction Indicator
If the Boom Malfunction Indicator illuminates when
attempting to activate a tower boom function, the func-
tion is being cutout by tower boom limit switch. The
function is not permitted at the current boom configura-
tion.
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 PROBLEM TO THE PROPER SER-
VICE PERSONNEL. DO NOT OPERATE THE MACHINE UNTIL THE MAL-
FUNCTION IS CORRECTED.
9. Platform Overload (If equipped)
Indicates the platform has been overloaded.
10. Hydraulic Oil Filter Indicator (Prior to S/N 85331)
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
85331)
Indicates that the charge pump filter is too restrictive
and needs to be replaced.
12. Engine Air Filter Indicator (Prior to S/N 85331)
When illuminated indicates that the air filter is too restric-
tive and needs to be replaced.