Hunter L401 - Maintenance Schedule

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• 5. Regular Maintenance L401 & L404 OPERATION INSTRUCTIONS
5.2 Maintenance Schedule
MAINTENANCE
SCHEDULE
PERFORM THE FOLLOWING MAINTENANCE
Check that the operating procedures, safety tips and generic safety material are
accessible to the operator.
Check that all safety warning labels are accessible and readable.
Take notice of the rated load capacity of the lift.
Daily
Check for proper operation of the lift controls.
Check auxiliary locks at all four posts for free rotation and ensure they properly line up
with lock ladder.
Check the air lock at all four posts for free movement and ensure they are properly lined
up with the lock ladder.
KEEP LOCK AREA CLEAN AND FREE OF DEBRIS AT ALL TIMES.
Check the hydraulic cylinder, power unit, hydraulic lines and fittings, air lines and
fittings, and air cylinders for leaks. Any leak must be repaired immediately.
Check the floor near the base of each post for cracks or loose concrete around the lag
bolts. If any flaws are found, stop using the lift immediately. This is an indication of an
unsafe condition and the concrete will have to be replaced.
Check for unusual noises, sudden movements, erratic operation or evidence of chips or
filings during use.
Check all four lifting wire ropes for damage or wear. If any signs of severe corrosion,
broken or damaged strands, wire rope elongation, reduced cable diameter, or any other
changes in appearance as compared to a normal wire rope are found, the lift must be
taken out of service and the wire rope(s) must be replaced prior to further use.
Fully lower the lift and check the portion of the wire ropes running vertically inside each
post. Pay close attention to the portion of the wire rope that enters the threaded stud at
the top of each post. Broken strands indicate signs of fatigue and if found the wire
rope(s) must be replaced prior to further use.
Raise the runway just enough for observation and set on the mechanical locks. Inspect
the wire ropes by looking through cutouts in the bottom of the runways.
Note: Use a
trouble light for better visibility.
Raise the runways to several intermediate locations and set on the mechanical locks.
Inspect the wire ropes by looking through cutouts in the bottom of the runways, and
inside the inspection door on the rear beam.
Note: Use a trouble light for better
visibility.
Fully raise the runways and set on mechanical locks. Inspect the wire ropes by looking
through cutouts in the bottom of the runways, and inside the inspection door inside the
rear beam.
Note: Use a trouble light for better visibility.
Check all sheaves for wear or damage. Look for cracks, worn surfaces, or abnormal
play or looseness as they rotate around mounting shafts. Check that all sheave
mounting shaft retaining bolts are tight.
Check for any fluid loss from the hydraulic system.
NOTE: When adding hydraulic
fluid, the lift MUST be lowered completely.