Manitowoc Grove RT9150E User Manual

SET-UP AND INSTALLATION RT9150E OPERATOR MANUAL
4-40
Published 2-23-2017, Control # 644-00
Stowing the Folding Boom Extension
Requirements for Stowing the Boom Extensions
Before lowering a boom extension into a horizontal position,
the following requirements must be met:
• No other load is raised apart from the hookblock.
• The counterweight required, according to the Load
Chart for the planned operation with the configured
extension, is rigged.
• The crane is supported with the outriggers prescribed for
operation with the extension according to the Load
Chart.
• The main boom is fully retracted.
• Retract the main boom completely, and lower boom to
the horizontal position.
• Remove the A2B switch weight and A2B switch, refer to
Connecting the Anti-Two Block Switch, page 4-33.
• Unreeve the cable and remove it from the extension.
Refer to Positioning/Removing the Hoist Cable, page 4-
37.
• Fold in the deflection sheaves at the front and rear.
Refer to Folding Deflection Sheaves, page 4-36.
Stowing Procedure: 23 ft (7 m) Boom Extension
The 23 ft extension can be folded to the side of the 36 ft
extension or stowed on the main boom.
1. Attach tag line to the nose of the 23 ft (7 m) section.
If working alone, route the tag line through the left side of
the 36 ft section and secure it to the lattice framework.
This will prevent the 23 ft (7 m) extension from swinging
around uncontrolled.
2. Remove the retaining clips from the pins (1) and remove
the pins from the connecting lugs (Figure 4-58).
3. Install the pins (1) into the holder (2) and secure with
retaining clips.
4. Using the tag line to control movement of the extension,
swing it into the stowed position on the side of the 36 ft
(11 m) extension.
WARNING
Tipping Hazard!
Make sure that the wheels do not touch the ground when
the crane has been inclined. This prevents a reduction in
the stability of the crane, which could lead to it tipping over
when setting the angle of the lattice extension, causing
serious injury or death.
DANGER
Crushing and/or Tipping Hazard!
To prevent serious injury or death, do not stand on
decking until extensions are secure.
Do not override the RCL when lowering the boom into a
horizontal position.
If the RCL is overridden, the crane operations will not be
monitored and the crane may overturn if outside of the
permissible working range.
WARNING
Crushing Hazard!
To prevent injury or death, ensure there are no people or
objects in the swing area of the extension.
If working alone, secure the rear of the 23 ft (7 m)
extension to the front of the 36 ft (11 m) section using the
tag line or a second rope.
FIGURE 4-58
1
2
Reference Only

Manitowoc Grove RT9150E Specifications

General

Brand	Manitowoc
Model	Grove RT9150E
Category	Construction Equipment
Language	English