GREER Company
1918 East Glenwood Place
Santa Ana CA 92705
Page 23 of 44
MicroGuard
®
586 Operation/Setup Manual
W458200 REV C 10/29/02
5
Routine Checks and Maintenance
Hydraulic Connections
The two hydraulic pressure sensors, mounted in the computer, measure the pressure within each side of the
boom hoist cylinder. The pressure sensors are connected to the boom hoist cylinder valve block by two flexible
hoses. Both hoses are subject to the full hydraulic pressure contained within the upper and lower sides of the
boom hoist cylinder.
Check Point:
•
Ensure that there are no hydraulic leaks at either connection end of both hoses. Check for signs of wear or
damage along the length of each hose.
6
Routine Checks and Maintenance
The Anti-Two-Block Weight
Check Points:
• Ensure that the anti-two-block weight and its parts are undamaged, in proper position, and correctly
connected.
• Check the chain on the anti-two-block weight for damage and stress, ensuring that there are no open links in
the chain.
• Ensure that the chain is securely attached with screw pin and shackle to the narrow vertical connector
projecting from the base of the anti-two-block switch.
• Ensure that the anti-two-block weight has been installed around one part of the load line.
7
Routine Checks and Maintenance
The Anti-Two-Block Switch
Checkpoints:
• Ensure that the anti-two-block switch is secure on its mounting post with safety pin inserted through the end
of the mounting post and locked into position.
• Ensure that the switch cable is secured to the strain relief thimble and that the thimble is on the mounting
post behind the switch.
• Ensure that all electrical cables and connectors are free from damage and correctly connected.
See anti-two-block switch installation.
CHECK THE ABOVE OPERATIONS BEFORE EACH SHIFT OR CRANE OPERATION
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