JLG X19J Operator Manual - Manual (Page 155)

151
BOOM LIFT MODELS X19J
JLG
X19JR0620113
FAULT CAUSE SOLUTION
After work the stabilisers
cannot be raised •Aerial part has not been put
perfectly at rest
•Photoelectric cells
faulty/poorly adjusted • Repeat procedure to place
aerial part at rest and check
correct signal from photoelec‑
tric cells
When operating the aerial
part vibrations and judde‑
ring are felt when extending
and retracting the arm •Telescopic arm and slides
poorly lubricated
•Slides worn • Lubricate arm and slides
• Adjust slides
The work platform does not
remain level when moving
the arm •Air in levelling system
•Balance valve on levelling
system faulty or not properly
set • Bleed air from work
platform levelling system
(contact our service depart‑
ment)
• Replace balance valve on
work platform levelling
system.
Uneven movement of the
first and second arm • Accumulator discharged • Replace accumulator (con‑
tact our service department).