Two-stage swing-away lattice extension 3.6 Description of rigging work

Connections in the middle area

In the middle area, on the run-up rail, there is a bearing point between the 12.5 m (41 ft) section and the main boom.

The connection must be made when only the 12.5 m (41 ft) section is folded at the side of the main boom.

The connection must be disconnected when the lattice extension needs to be rigged again from this state.

Making connection

• Swing the 12.5 m (41 ft) section on the runup rail fully onto the main boom.

• Remove the pin (1) from the holder (2) and attach the 12.5 m (41 ft) section to the main boom with the pin.

• Secure the pin with the retaining pin.

Disconnecting connection

• Remove the pin (1) from the connection and insert it in the holder (2).

• Secure the pin with the retaining pin.

Two-stage swing-away lattice extension

3.6 Description of rigging work

Connections in the rear area

In the rear area, on the main boom, there is a bearing point between the 9m (30 ft) section and the main boom.

The connection must be made: –when unrigging the 22 m (72 ft) two-stage swing-away lattice extension, –for operation with the 13 m (43 ft) swing-away lattice extension.

The connection must be disconnected: –when rigging the 22 m (72 ft) two-stage swing-away lattice extension, –for removing the 22 m (72 ft) two-stage swing-away lattice extension.

Disconnecting connection

• Swing the lever (1) on one of the two handles (2) away from the main boom until you hear the spring latch (3) engage.

The spring latch holds the lever in this position and the connection is disconnected.

Making connection

• Swing the lattice extension fully onto the main boom.

• Turn the spring latch (3) downwards as far as it will go.

The lever (1) clicks back in the direction of the main boom and the connection is made.

3.6.5 Pin connections to swing the lattice extension

Before you can swing the lattice extension when rigging in front of the main boom head or when unrigging on the basic section, you must make or disconnect different connections, depending on the rigged lattice extension.

To swing the 13 m (43 ft) swing-away lattice extension you must make connections on the main boom head.

To swing the 22 m (72 ft) two-stage swing-away lattice extension you must also make connections on the pivot point between the 12.5 m (41 ft) section and the 9 m (30 ft) section of the two-stage swing-away lattice extension.

The connections on the bearing points are made with pins. The pins are inserted into holders on the lattice extension and are secured with retaining pins.

GRisk of accidents from falling parts! Always secure the pins both in the bearing points and in the holders with retaining pins. This prevents unsecured pins coming loose, falling and injuring people.

When rigging the 13 m (43 ft) swing-away lattice extension and the 22 m (72ft) two-stage swing-away lattice extension, the foot section of the 12.5 m (41 ft) section is always locked on the right side of the main boom head with two pins.

HBefore you can lock the foot section of the lattice extension on the main boom head, the lattice extension must be swung onto the main boom head; à Swinging the lattice extension onto the main boom head , p.3-64.

HIf the pins can not be inserted fully or get stuck, retract the main boom against the stop.

Establishing connection between 12.5 m (41 ft) section and main boom head

The connection must be made:

–for swinging the 13 m (43 ft) swing-away lattice extension, –for swinging the 22 m (72 ft) two-stage swing-away lattice extension.

• Release the retaining pins and remove the two pins from the holders ( 3) and (4).

• Insert one pin into each of the bearing points (1) and (2).

• Secure both pins with the retaining pins.

Disconnecting connection between 12.5 m (41 ft) section and main boom head

The connection must be disconnected so that the lattice extension can be swung at the side of the main boom.

H Before you disconnect this connection, the lattice extension must be raised into the bearing point on the main boom; à Lowering/raising retaining mandrel on main boom, p.3-57.

• Remove the retaining pins and pull the two pins (1) and (2) out of bearing points (1) and (2).

• Insert a pin into each of the holdings (3) and (4).

• Secure both pins with the retaining pins.