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MAINTENANCE
5000 SERIES OWNER’S MANUAL
PURGING AIR FROM THE SYSTEM
PURGING AIR FROM THE SYSTEM
PURGING AIR FROM THE SYSTEM
PURGING AIR FROM THE SYSTEM
Air that is trapped in the cylinder will cause an erratic “bumpy” condition. To expel the air, hold the affected
control open after the function has “bottomed out”. Move the function in the opposite direction and again hold
the control open. Attempt to operate the crane in a normal manner to determine if the air has been purged.
When purging is complete, reevaluate hydraulic fluid level and add fluid if necessary.
REMOTE CONTROL
REMOTE CONTROL
REMOTE CONTROL
REMOTE CONTROL
The remote control is subject to corrosion and must be checked at least twice a year and more often if operated
in severe, wet conditions. To check for corrosion:
1.
Remove the cover plate and inspect for lack of luster. Metal should appear bright and untarnished.
2.
Spray the inside of the box with an ignition sealer such as Krylon.
3.
Check all connections to make sure they are tight.
HYDRAULIC OIL DETERIORATION
HYDRAULIC OIL DETERIORATION
HYDRAULIC OIL DETERIORATION
HYDRAULIC OIL DETERIORATION
Contamination of the hydraulic oil by solvents, water, dust or other abrasives will result in premature breakdown
of the oil’s anti-foam, lubrication, anti-rust and viscosity properties. Periodically, a sample of the hydraulic oil in
the system should be drawn off and its condition checked for breakdown. To check quality:
1.
Place oil sample in a clean glass.
2.
Smell oil to detect a burnt or rancid odor.
3.
Examine the oil for a cloudy or dark color.
4.
Allow the sample to stand for several minutes and inspect it for water, which will settle to the bottom.
When any of the results above are observed, the system should be purged to the bottom and filled with new oil.
HYDRAULIC SYSTEM PURGING
HYDRAULIC SYSTEM PURGING
HYDRAULIC SYSTEM PURGING
HYDRAULIC SYSTEM PURGING
The oil should be changed after 600 hours
600 hours
600 hours
600 hours of operation or every six months
six months
six months
six months, whichever comes first. The
procedure for purging the system is as follows:
1.
Locate the unit in an area that provides solid, level footing and space to accommodate the full operating
range of the crane.
2.
Stabilize the unit with the outriggers. Move the crane to either side of the truck and extend the lift
cylinder.
3.
Drain the hydraulic fluid from the reservoir and clean the suction line filter.
4.
Remove the reservoir return line. Refill the reservoir with Chevron AW68 or equivalent. Direct the return
line into a sump waste container.
5.
Rotate the crane 90 degrees, retract the extension boom, lower the main boom and operate the winch
up and down for approximately ten seconds.
6.
All components are now purged. Replace the return line filter cartridge and reinstall the return line to the
reservoir.
7.
Check the reservoir fluid level and add fluid to within one half inch (1/2”) of the top. The boom elevation
and extension cylinders must be fully retracted when refilling the reservoir.
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