JLG X20JP - X600AJ Service Manual - Manual (Page 52)

SECTION 3 - CHASSIS & TURNTABLE
3-28 – JLG Lift – 3121623
MAINTENANCE SCHEDULE
Maintenance tasks are described in the sections below
that are required for optimal and trouble-free operation.
If increased wear is detected during regular inspections,
then reduce the required maintenance intervals according
to the actual indications of wear.
If you have questions concerning maintenance tasks and
intervals, please contact our customer service.
Lubrication
General re-lubrication of slew drives:
• After each cleaning
• Before and after longer periods of standstill, e.g. for
cranes and construction machines during the winter
months.
IMPORTANT
THE MAIN CAUSE FOR SLEWING RING FAILURE IS
INADEQUATE LUBRICATION. THE LUBRICATION
INTERVALS ESSENTIALLY DEPEND ON EXISTING
WORKING AND ENVIRONMENTAL CONDITIONS, AS
WELL AS THE VERSION OF THE SLEW DRIVE. PRE-
CISE LUBRICATION INTERVALS CAN ONLY BE
DETERMINED BY TESTS UNDER NORMAL OPERAT-
ING CONDITIONS.
Interval Maintenance task To be executed by
weekly Check seal Qualified person
after 250 operating hours Check tighten bolts Qualified person
Check tilting clearance Qualified person
after every additional
500 operating hours or at
least every 6 months Check tighten bolts
• Reduce the inspection interval if there is heavy wear or
continuous operation.
Qualified person
Check tilting clearance
• Reduce the inspection interval to 200 operating hours if
the detected increase in tilting clearance is approxi-
mately 75% of the permissible tilting clearance increase.
• After further increase reduce the interval between inspec-
tions to 50 - 100 hours.
Qualified person
Check circumferential backlash
• Reduce the inspection interval to 200 operating hours if
the detected increase in circumferential backlash is
approximately 75% of the permissible circumferential
backlash increase.
• After further increase reduce the interval between inspec-
tions to 50 - 100 hours.
Qualified person