Manitowoc MLC165-1 Service Maintenance Manual

Reference Only
Manitowoc Published 05-26-17, Control # 238-02 4-5
MLC165-1 SERVICE/MAINTENANCE MANUAL BOOM
4
4
PHYSICAL BOOM STOP
See Figure 4-3
Physical Boom Stop Angles
Physical boom stops (2, View A) serve the following
purposes:
• Assist in stopping the boom smoothly at any angle
above 80°
• Assist in preventing the boom rigging from pulling the
boom back when traveling or setting loads with the
boom at any angle above 80°
• Assist in moving the boom forward when lowering the
boom from any angle above 80°
• Provide a physical stop at 89.5°
Physical Boom Stop Operation
• When the boom is raised to 80°, the springs in the boom
stop tubes start to compress (View B).
• As the boom is raised higher, spring compression
increases to exert greater force against the boom.
• If for any reason the boom is raised to 89.5°, the boom
stop springs fully compress to provide a physical stop
(View C).
Physical Boom Stop Adjustment
Struts (3) have slotted ends that do not require adjustment.
WARNING
Collapsing Boom Hazard!
Physical boom stops must be installed for all crane
operations.
Physical boom stops do not automatically stop boom at
maximum operating angle.
Automatic boom stop must be installed and properly
adjusted.

Manitowoc MLC165-1 Specifications

General

Brand	Manitowoc
Model	MLC165-1
Category	Construction Equipment
Language	English