Hunter L451 - 3.2. Maintenance Schedule

NOTE
For lockout / tagout instrucons, refer to ANSI Z244.1.
NOTE
Scratches to powder-coat should be touched up as soon as possible, on an as-needed basis.
Maintenance is to be performed by shop employee or trained li service personnel.
Worn, damaged or broken parts need replaced with parts approved by the original equipment manufacturer or with parts
meeng original manufacturer specicaons.
MAINTE-
NANCE
SCHED-
ULE
PERFORM THE FOLLOWING MAINTENANCE
Daily Check that all safety warning labels are accessible and readable. Check for proper operaon of the li
controls. Check auxiliary locks at all four posts for free rotaon 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 ngs, air lines and ngs, and air cylinders for
leaks. Any leak must be repaired immediately. Check the oor near the base of each post for cracks or
loose concrete around the lag bolts. If any aws are found, stop using the li immediately. This is an
indicaon of an unsafe condion and the concrete will have to be replaced. Check for unusual noises,
sudden movements, errac operaon or evidence of chips or lings during use. Check all four liing
wire ropes for damage or wear. If any signs of severe corrosion, broken or damaged strands, wire rope
elongaon, reduced cable diameter, or any other changes in appearance as compared to a normal wire
rope are found, the li must be taken out of service and the wire rope(s) must be replaced prior to
further use. Fully lower the li and check the poron of the wire ropes running vercally inside each
post. Pay close aenon to the poron of the wire rope that enters the threaded stud at the top of
each post. Broken strands indicate signs of fague and if found the wire rope(s) must be replaced prior
to further use. Raise the runway just enough for observaon and set on the mechanical locks. Inspect
the wire ropes by looking through cutouts in the boom of the runways. Note: Use a trouble light
for better visibility. Raise the runways to several intermediate locaons and set on the mechanical
locks. Inspect the wire ropes by looking through cutouts in the boom of the runways, and inside the
inspecon 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 boom of the
runways, and inside the inspecon 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 mounng shas. Check that all sheave mounng sha retaining bolts
are ght. Check for any uid loss from the hydraulic system. NOTE: When adding hydraulic uid, the lift
MUST be lowered completely. Hose down with water and blow dry with compressed air when salt, ice,
snow or other corrosive condions exist.
Weekly Check the turning angle gauges and rear slip plates for smooth and easy operaon. Clean by blowing
out with clean, dry compressed air. Disassembly is not required. DO NOT lubricate turning angle plates
or slip plates. (CAUTION: Always wear eye protection when using compressed air). Check anchor bolts
on each post for ghtness. Torque to 100-110 -lb. Check and lubricate rear ramp pivots with SAE 30
oil.
4-Post Lift Rack Models L451 & 454 Operations Manual
Page 25 of 28