Manitowoc MLC300 User Manual

Manitowoc Published 11-20-19, Control # 234-19 4-173
MLC300 OPERATOR MANUAL SETUP AND INSTALLATION
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LOAD BLOCK TIEBACK
General
Tieback hole (1, Figure 4-117) is provided on the front of the
rotating bed for tying back the load block when not in use.
Specifications
Sling Length
The sling must be long enough to connect it to the shackles
in the tieback hole and to the hook of the freely suspended
load block. This will prevent personnel from having to swing
the block in, toward the crane, to make the connection.
Sling and Shackle Capacity
The sling and shackles must be capable of supporting the
weight of the load block and 1/2 the weight of the wire rope
suspended from the boom point. When sizing the sling and
shackles take into account the dynamic affects of traveling
and swinging the crane. It is the crane user’s
responsibility to calculate this load.
CAUTION
Avoid damage:
• Haul in the load line only until the tieback sling is taut.
The purpose of the tieback is only to prevent the load
block from swinging when not in use.
• Do not tighten the load line to the point that the load
line rubs against the lacings in the boom sections or
to the point that the load block can bounce into the
lacings.
• Operator, be aware that as you boom down, the load
lines and tieback sling will tighten even more. Pay out
the load line while booming down so that you don’t
pull the load block into the boom. Damage to lacings
or chords could result.
• Only use the hole for tying back the load block. Using
the hole for any other purpose is neither intended of
authorized. Damage could result.
Figure 4-117

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English