Manitowoc GROVE RT890E Operator's Manual page 94

SET-UP AND INSTALLATION
Folding Out/In the Deflection Sheaves on the
33 ft (10.1 m) Section
To prevent the hoist rope dragging on the main boom or
lattice extension during operation with the lattice extension
or boom extension, the hoist rope is guided via deflection
sheaves.
On the 33 ft (10.1 m) section, there is a deflection sheave at
the rear (1). Fold out the deflection sheave if the boom
extension offset angle is 20° or 40°.
Both sheaves must be folded out:
- for operation with the swingaway lattice extension,
- for operation with the 56 ft (17.1 m) two-stage
swingaway lattice extension.
For transportation both deflection sheaves must be folded in.
Folding Rear Deflection Sheave
Risk of crushing.
Always hold the deflection sheave by the handle, when
removing the pin. You might get your fingers crushed if
you hold the sheave by the side plates.
Folding Out Deflection Sheave
• Hold the deflection sheave by the handle (2) and remove
the pin (3) from the bore (1).
4-32
DANGER
• Fold the deflection sheave up and secure it with the pin
in the bore (4).
• Secure the pin with a retaining pin.
Folding In Deflection Sheave
• Hold the deflection sheave by the handle (2) and remove
the pin (3) from the bore (4).
• Fold the deflection sheave down and insert the pin in the
bore (4).
• Secure the pin with a retaining pin.
Folding Front Deflection Sheave
Always hold the deflection sheave by the strut on the top
when removing the pin. You might get your fingers
crushed if you hold the sheave by the side plate.
Folding Out Deflection Sheave
• Unscrew the retaining pin on the pin (3).
RT890E
DANGER